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Gallagher, John S. (/Thermodynamic prope QC100 .U5753 N0.1234 1987 V198 C.I NBS-P

NBS

PUBLICATIONS

JT OF COMMERCE

f Standards

NBS Technical Note 1234

Thermodynamic Properties of a Geothermal Working Fluid;

90% Isobutane'10% Isopentane

J, S. Gallagher, D, Linsky, G. Morrison, and J. M. H. Levelt Sengers

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NBS Technical Note 1234 ^'^^'^

Thermodynamic Properties of a Geothermal Working Fluid;

90% Isobutane'10%Isopentane

J. S. Gallagher, D. Linsky, G. Morrison, and J. M. H. Levelt Sengers

Thermophysics Division

Center for Chemical Engineering

National Engineering Laboratory

National Bureau of Standards

Gaithersburg, MD 20899

Prepared for: Division of Geothermal and Hydropower Technology, U.S.

Department of Energy, Oakland, California

June 1987

:^^-

"ffEAU of

U.S. Department of Commerce

Malcolm Baldrige, Secretary

National Bureau of Standards

Ernest Ambler, Director
National Bureau of Standards U.S. Government Printing Office For sale by the Superintendent

Technical Note 1234 Washington: 1987 of Documents,

Natl. Bur. Stand. (U.S.), U.S. Government Printing Office,

Tech. Note 1234 Washington, DC 20402

191 pages (June 1987)

CODEN: NBTNAE
-1-

Table of Contents

Abstract 2

1. Introduction 3

2. Generalized Corresponding- States Formulation 4

3

.

Experimental Data 12

4. Comparisons of Experimental Data with the Thermodynamic

Surface 20

5. Impurity Effects 27

6. Tables of Properties 30

7. Conclusions 31

References 34

Figures 38

Tables 53

Appendix A: Tables of Properties in SI Units 63

Appendix B: Tables of Properties in Engineering Units 123

Appendix C: Computer Programs for the Generation of Tables of

Properties 179
-2-

ABSTRACT

We present tables of thermodynamic properties, and dew and bubble

properties, of a mixture of 90 mol % isobutane and 10 mol % isopentane, a

working fluid in a binary geothermal power cycle. The tables are

generated by a formulation of the Helmholtz free energy, in which the

mixture properties are mapped onto the known properties of pure isobutane

by means of the principle of generalized corresponding states. The data

base for the Helmholtz free energy formulation is new. We report data

obtained in three different apparatus: critical -line and isopentane vapor

pressure data obtained in a visual cell; vapor-liquid equilibria data

obtained in a mercury- operated variable -volume cell; and pressure -volumetemperature data for the 90 mol % - 10 mol % mixture obtained in a

semi -automated Burnett- isochoric apparatus. The principles of the

methods, and estimates of the reliability, are discussed and all

experimental data are compared with the surface. The results are tables

of specific volvune , enthalpy, entropy, specific heat and density and

temperature derivatives of the pressure at 10 K temperature increments

from 240 to 600 K along isobars from 0.01 to 20 MPa. Separate tables are

prepared from the dew and bubble properties of the 90-10 mixture.

Estimates of the effects of isomeric impurity of isobutane are given

in graphical form.
1 . INTRODUCTION

The purpose of this report is to provide the data base necessary for

efficient operation of a prototype binary geothermal power plant

constructed under auspices of the U.S. Department of Energy in Heber , CA.

The working fluid in this plant is a mixture of 90 mol % isobutane and 10

mol % isopentane, with up to 5 mol % contamination of each of the

components, primarily by isomers. The plant operates in an in-part

supercritical Rankine cycle between 300 and 460 K. The locations of the

dew and bubble curve are extremely important to know, so that no liquid

forms when the fluid expands in the turbine [K1980a] . For this reason, it

is necessary to construct a thermodynamic surface for the mixture at all

compositions: the data base cannot be limited to the 90-10 mixture alone.

On the other hand, obtaining the PVT and VLE data for the mixtures at many

compositions would be too big a task. As a consequence, we have adopted a

two-pronged approach, where the thermodynamic surface was constructed on

the basis of a theoretical, generalized-corresponding-states model [L1968,

R1969a] and fine-tuned with respect to experimental VLE data taken in the

range of 288-328 K, and PVT data taken in the range of 360-430K, the

latter only for the 90-10 mixture. The corresponding-states model was

described in previous publications [G1984, 1986, 1987] and is only

summarized here. A new set of parameters is given, characterizing the

best fit to all available data. The VLE and PVT data obtained for the

mixture are reported. The experimental phase boundary data are compared

with those derived from the "best" surface. The VLE, PVT and enthalpy

data, the latter from another source [K1979], are compared with the

surface. A special effort has been made to calculate the effect of
-4-

impurities on the thermodynamic properties and on the location of the

phase boundaries.

Tabulations are presented of the one -phase thermodynamic properties

volume, enthalpy and specific heat; and the pressure derivatives with

respect to density and temperature, all as isobaric functions of

temperature. In addition, we tabulate the dew points values of the

thermodynamic properties for the 90-10 vapor mixture, and its coexisting

liquid. Conversely, we tabulate these properties for the 90-10 liquid at

the bubble points, and for its coexisting vapor.

All tables are given in SI units. Supplementary tables are given in

British units. A Fortran computer program is added, that generates values

of thermodynamic properties along isobars in a choice of systems of units.

2. GENERALIZED CORRESPONDING -STATES FORMULATION

A. Reference: Pure Isobutane i

The Helmholtz free energy A(p, T) of pure isobutane, as a function of

temperature T and molar volume V, serves as the starting point for our

formulation for the mixture properties. It can be written as [W1982,

W1983, G1984, G1986]

A(T, V) = Aq(T, Vq) + A^(T, V) + A^CT, V) + A^CT, V) (1)

Here A^(T, V ) represents the ideal-gas contribution to the Helmholtz free

energy at a reference molar volume V^ , A^ and A^ , the so-called base

functions, which contains the Carnahan- Starling expression for the

repulsive term, and a simple second-virial type attractive term, as

formulated by Haar et al . [H1984]. The term A is a sum of residual

terms, powers of temperature and volume, that make up for the difference
-5-

between the experimental pressure and that defined by the base function.

We use the Helmholtz free energy function In dlmenslonless form.

Dlmenslonless properties are represented with a bar over the symbol, and

the reduction parameters with an asterisk. Thus, we have:

Primary reduction parameters for

Temperature: t'^ = 407.84 K

Density:

^ = P* = 3879.6 mol/m"^ (2a)

V

Pressure: P = 3.6290 MPa

Derived reduction parameters for

Thermodynamic energy function: A, G, H and U

Helmholtz free energy: A = P /p

Entropy: S = P /(p T ) (2b) ** * * 1/2 Speed of sound: a =(P /(p M) )

Physical constants

Molecular weight: M = 0.0581234 kg/mol

Gas Constant: R = 8.31441 J/(mol K) (2c)

R = R/S
-6-

The dimensionless forms of thermodynamic variables and properties are

defined as follows

Temperature T =

* T/T

Pressure P =

•k P/P

Density P =

k

p/P

Volume V = V.p* = 1/^

Helmholtz function A = A/A

Gibbs function G =

k-k G/A

Internal Energy U =

k-k U/A

Enthalpy H =

k-k H/A

Entropy S =

•kk s/s

Heat capacities C

V

= kk

C /S V

Speed of Sound

and C

P

a

=

k-k C /S

P

kk

a/a

(3)

All extensive thermodynamic properties are taken per mole. The

dimensionless thermodynamic properties are derived from the dimensionless

Helmholtz free energy A(V, T) by means of the following relations:
V = p

p = p ^OA/ap)-

(aP/5p)^ = 2 P/p + p ^(3^A/5p^),

(5P/aT)- = p ^(d^k/dpdi)

S = - (5A/aT)-

U = A + T S (4)

G = A + p/p

c = - f(a^A/aT^)- V p Cp = c^ + (T/p ^) (ap/3t)-^ /(ap/ap)-

a = [(Cp/c^) (ap/ap)-] 1/2

The dlmensionless Helmholtz free energy (1) takes the form

A(T, V) = Aq(T) + A^(T, V) + A2(T, V) + A3(T, V) , (5)

with

i-4

Aq = (Aqq + Aq^T) in T +1 Aq^ T + A^^ T in(e - 1) , (6)

i=2

where X = Xq/T ;

A^ = p T

'^ll ^12 ^13 ^14

T T T T

(7)

^2 " ^20 ^

f •\ in

1-y

2(l-y)'

4y

with y = p y^ + y^ in T +

72 73

f^ f^

(8)
r ^

i=l j=l ^J

i+1

with z e-V

(9)

The coefficients A^^ - A^^ , y^ - y^ , A^^ - A^^ , B^^ - Bg^, x^ and z^ are

listed in Table 1.

The analytic Helmholtz free energy for pure isobutane excludes a

small region about the critical point inside of which the values predicted

for the thermodynamic functions are inaccurate. In dimensionless units,

this region is

0.7 < p < 1.3

and 0.985 < f < 1.015 (10)

In fact, in order to obtain more accuracy in the supercritical regime, the

surface defined by equations (5) -(9) and the constants in Table 1 has not

been forced to fit the experimental critical point of isobutane. The

critical temperature of the surface overshoots the real critical

o temperature by approximately 2.2 C. A separate scaled formulation is

available for the region defined by (10) [LS1983]

.

B. Formulation for Pure Isopentane

Let the subscript 4 refer to isobutane, 5 to isopentane, and let

properties of isopentane be made dimensionless by the same set of

reference constants as those of isobutane (2), (3). Define the following

ratios

f = t^ / t'^ ^0 S / 4 '

^0 = ^?/^4 •

(11)
Then the principle of corresponding states postulates that, for all

V and T

Z^CV^. T3) =Z^ (\ = S/^o' *4 = W

(12)

and A^'^CV^, T5) = f^ A^'JCV^ = V^/h^, T^ = T^/f^) - R^^f^ inCh^) ,

- - **- -cf where Z is the compressibility factor PV/RT (= P V/R T) , and A is the

-cf configurational portion of the Helmholtz function, A = A - A^ . These

relations imply that f_ = h,. q».

Since no two substances obey the principle of corresponding states

exactly, Rowlinson et al. [R1969a] and Leland et al. [L1968] proposed to

generalize the principle through the use of two functions, ^(V, T) and

<^(V, T) to be defined, in the dimensionless system we are using here,

through

f = (f^/T^) ^(V^, f^)

(13)

and q = (P5/P^) ^(V^, T^) / «^(\, T^) ,

so that h will be given by

h = f/q = (f^ / f^)(P^. / P5) ^(V^, f^) = (V3'/V^) ^(\, T^) (14)

These functions 9 and <f> are expected to be slowly varying functions of V

c c and T. , to not be greatly different from unity since Z / Z is close to

unity, and to be constructed such that equation (12) will be satisfied

for the real fluids. With this new f, q and h substituted for the f _ , q_
10-

and h. , one has

Z3 (V5, T3) = Z^(V^ = V3/h, t^ = T^/f) .

A^^ (V^, t^) = f A^^ (V^ = V^/h, T^ = t^/f) - R**!^ in(h)

(15)

With h defined as in (14), the dimensionless critical volume of

- c isopentane V no longer appears in the formulation. In its place we have

the quantity V = (T /t )(P /P )V which equals V only if the critical

compressibility factors of isobutane and isopentane are identical.

Our choices for the funtions d and ^ were made by mapping the vapor

pressure and coexisting densities of isopentane onto those of isobutane.

For the vapor pressure, we used data obtained in our laboratories (see

Section 3 and Table 2). For the coexisting densities, we used the data of

Young, Table 3 [Y1895]. We represent 6 and ^ as functions p and t by the

expression

= a^ + a^ (p^ - 1) + a^ (t^ - 1) + a^ (t^ - 1)^

^ = b^ + b^ (p^ - 1) + b^ (f^ - 1) + b^ (T^ - 1)

(16)

2

with the coefficients a^14- b, listed in Table 4 along with the critical

c c parameter values P , T of isopentane. We have found no advantage to

having the constants a and b depart from unity. The ideal-gas Helmholtz

function for isopentane is obtained by interpolation in the table of

ideal-gas functions compiled by Scott [S1974].
-11-

C. Formulation for the Mixture Properties

The compressibility factor and configurational Helmholtz free energy

of the mixture, excluding the ideal -mixing term, are represented as those

of a single equivalent substance by means of relations that are

generalizations of the expressions (11) - (16)

ZXXX(V , T ) = Z, (V, = V /h , T, = T /f ) 4 4 XX 4 XX

(17)

A

^^ (V , T ) = f A, ^^ XXX (V, = V /h , T, = T /f )-R*''t in(h ) X 4 4 X X 4 XX x x

where hXX, f are defined by'

\ = (^x'/^4^ [1 + X {.^ (V^, t^) - 1} + a x^(l - x){<?i(V^, T^)-l)^:

^x =^^x/"^!^ {\ + ^ {e{V^, T^) - 1}] (18)

Here x is the mole fraction of isopentane. For x=0 , f and h reduce to

the value of unity; and for x=l they assume the values for pure

isopentane, (13), (14). The constant "a" is adjustable. Its value is

listed in Table 5.

- c ' - c The constants V and T are pseudocritical constants, related to the

X x '^ 2 2 locus where (aP/3V) and (9 P/aV ) would be zero if the mixture would

stay homogeneous. In fact, however, the mixture separates because of

material instability prior to reaching the pseudocritical line; the real

critical line is obtained by a method to be described shortly.

- c ' - c The constants V and T are obtained by Van der Waals-type mixing

rules
-12-

-c' 2-c -c 9 -r

'

V = (1 - x) V, + 2x(l - x) V,^ + X V^

X 4 45 5

f^ = (1 - x)^ f^ + 2x(l - x) T^^ + x^ t^ , X 4 45 5

c • c with the constants V and T, defined by the "combining rules"

(19)

^45 = ^

- c T = i

45

0.5 (V^)^/^ + 0.5 (V^')^/^l^

(20)

4 5 1/2

The adjustable parameters k, i are used to adjust the shape of the

pseudocritical line, and therefore also of the real critical line of the

model

.

The additional parameters a, k and Jl that are required to formulate

the properties of the mixture are listed in Table 5.

The ideal -gas part of the mixture Helmholtz free energy is a mole

fraction average of the molar free energies of the two components, plus

the ideal mixing term RT{x in x + (1 - x) in (1 - x) }

.

3. EXPERIMENTAL DATA

A. Critical line Data

We determined several points on the critical line of isobutaneisopentane by the method of meniscus disappearance.

For observation of the meniscus disappearance a simple optical cell

was constructed (Fig. 1). It consists of a stainless-steel-316 ring, of

inner diameter 2.54 cm, thickness 1.27 cm, sandwiched between two circular

sapphire windows (of diameter 5 cm, thickness 3 mm) by means of an

aluminum clamp. Tin foil of 0.25 mm thickness serves as a gasket. This
-13-

3

way, a disk- shaped cell of nominally 6.5 cm volume is formed. The

o dimensions of the ring were calibrated at 20 C by the NBS Metrology

o Division. From the calibration, the volume of the cell at 20 C was

3 calculated to be 6.4484 cm , with an uncertainty of 0.1%; the thickness of

the tin foil gasket has been taken into account. The cell contains a

stirrer, a soft-magnetic -steel rod which is moved around by means of a

3 hand-operated external magnet. The volume of the stirrer is 126 mm . One

end of a capillary of 1.6 mm outer diameter, 0.45 mm inner diameter and

8 cm length is welded into the ring. The other end is sealed off by means

of a miniature pressure valve. The combined volume in line and valve is

3 22 mm , as calculated from the dimensions. The coefficient of linear

thermal expansion of the steel ring, which determines the cell volume at

o -6

temperatures other than 20 C, is assumed to be 16.5 x 10 per K in the

range of 20-200°C.

The assembled cell and valve have a mass of just over 400 g. The

sample mass, typically of the order of 1.5 g, is determined by weighings

of the empty and the filled cell on a 1-kg balance with resolution of

0.5 mg.

The cell is connected to a manifold that contains a miniature

Sensotech strain-gage pressure transducer and another valve (Fig. 1).

Sample gas vented from the cell is captured above water in an inverted

graduated cylinder. The manufacturer claims the pressure transducer to be

o precise to 0.1% in a temperature range up to 200 C. The arrangement of

Fig. 1 permits in-situ calibration of the pressure transducer with respect

to a dead-weight gage. We found the transducer performance satisfactory

o at room temperature; pressure measurements at temperatures above 130 C,

however, were hampered by strong drifts of the transducer, often as much
-14-

as 10 kPa (0.1 bar) per day; these measurements are therefore not as

reliable as we had hoped them to be on the basis of the manufacturer's

claim. In the measurements on pure isopentane, however, we mounted the

pressure transducer outside the bath, so that these pressures have better

reliability than those of the mixtures.

The measurement procedure is to weigh in the required amount of

isopentane, and then put in the matching amount of isobutane by means of a

volume pump, so as to obtain a mixture nominally of the desired

composition at an overall fill density 5-10% above the estimated critical

value. The precise amounts of isobutane and isopentane are obtained by

weighing. The cell is then attached to the manifold and placed Inside a

commercial "visibility bath" filled with a low-vapor-pressure silicone

oil; the temperature of the bath is controlled to a few hundredths Kelvin.

The mixture is heated until the meniscus disappears from the cell at the

top. The cell is then heated several degrees while the line and pressure

transducer sections are evacuated. The fluid is expanded into the

pressure transducer section. Care is taken that the mixture does not

phase -separate in the cell. A full expansion corresponds to about 5%

decrease in density. It is not necessary to do a complete expansion,

although this was done most of the time. With the cell valve open, the

fluid is now cooled in steps, and the pressure and temperature measured,

until a dark brown color in the cell betrays the closeness of a phase

separation near the critical point. The cell valve is then closed and the

temperature lowered until the meniscus appears. The meniscus level, at

first appearance, and after vigorous stirring, is read with a

cathetometer . It will generally be in the upper part of the cell. The

cell is then heated until well into the one -phase region, while the fluid
-15-

in the transducer is expanded into the inverted graduated cylinder

3 (approximately 20 cm at room temperature) . After the vent valve is

closed, the sequence of pressure measurements and meniscus level

determinations is repeated. The critical point temperature and density

are obtained by interpolating in the meniscus level measurements for

meniscus disappearance at mid- level in the cell (after allowances for the

capillary, valve and stirrer volumes are made). The critical pressure is

obtained by extrapolating the isochoric pressures to the transition

points, and interpolating between isochores . In several instances we

stopped the sequence when the meniscus disappeared at mid- level, and

immediately, in situ, calibrated the transducer with respect to a

calibrated dead-weight gage. This alleviated somewhat the problems that

were caused by the strong drift of the pressure transducer. The

barometric pressure is read on an aneroid gage with a resolution of 25 /zm

of mercury.

After all measurements are completed, the cell is removed, cleaned

and weighed, after which the remaining sample is blown off and the empty

cell weighed again. The amounts released from the cell during the

measurements are calculated from the gasometry data, corrected for gas

nonideality. Proof of a successful series of measurements is that the

gasometry data add up to the weight loss observed. We have rejected those

runs in which the mismatch between the gasometry and weight data exceeded

15 mg. (For those runs we retained, the agreement was usually an order

better than that.) Therefore, no uncertainty larger than 1% in the

reported density results.

The data obtained with this apparatus are summarized in Table 2

(vapor pressure of isopentane) and Table 6 (critical line data) . We
-16-

estimate the reliability of the data to be on the level of 20 mK in

temperature, 4 kPa in pressure, 1% in density and 0.001 in composition.

The isopentane used in this work was Phillips research grade of

99.99+ mol percent claimed purity, the isobutane was Phillips research

grade, claimed to be at least 99.9% pure. The isobutane liquid was

analyzed by chromatography after the measurements of the isobutane vapor

pressure [W1983] and found to contain 30 ppm of nitrogen and 300 ppm of

propane. The n-butane content could not be determined.

The isopentane was kept at atmospheric pressure and must therefore

have contained some dissolved air. When introducing it as the first

component into the visual cell, we always overfilled and blew off some

vapor by mild heating of the cell, thus eliminating most of the volatiles.

B. VLE data

o

' The VLE data in the range 15-75 C have been obtained in a visual

variable volume cell operated with a mercury displacement pump.

A schematic of the VLE cell and manifold is given in Fig. 2. The

pressure cell is a sapphire tube; stainless-steel plugs inserted in the

tube at both ends seal it by means of 0-rings [D1983] . Samples are

introduced from a thermal compressor which is removable and is filled from

a gas buret; the amounts of the components of a mixture are determined by

weighing. The compositions thus obtained are reliable to ± 0.0002 in mole

fraction [M1984] . Mercury fills a calibrated injector pump, the

capillaries and part of the sample cell (Fig. 2). It is used to displace

the sample from the thermal compressor into the cell, to serve as a

pressure- transmitting medium and to fill all noxious volumes, so that the

mixture sample is strictly confined to the sapphire tube. The bore of the

sapphire tube was calibrated over its length by means of triple-distilled
-17-

mercury; that of the injector pump was similarly calibrated by means of

decane, the density of which was determined by pycnometry; the pycnometer

having been previously calibrated with H_0. The pump is calibrated to ± 2

3 * mm . The pressure is measured by means of a Validyne pressure

transducer, kept at ambient temperature and calibrated with respect to a

dead-weight tester. The transducer is filled with mercury in order to

eliminate noxious volumes. Pressures are measured to 0.1% or 1 kPa,

whichever is the greatest, and head corrections are made. The barometric

pressure is read on an aneroid gage with a resolution of 25 urn of mercury.

The system is immersed in a stirred water bath, controlled to better than

1 mK. The temperature is read on a quartz thermometer calibrated with

respect to a standard platinum resistance thermometer. The temperature

resolution is 0.3 mK, the accuracy 1 mK.

VLE measurements are obtained by measuring the meniscus levels of

mercury and the vapor- liquid interface of a predetermined amount of

mixture prepared graviraetrically , at measured values of pressure and

temperature. At fixed P and T, the compositions and densities of

coexisting phases are nonvariants . By introducing at least two samples of

different but close known compositions, the compositions and densities of

the coexisting phases can be calculated from the observed phase volumes

and the known total mass [Kl980b] . In this case, however, usually the

liquid densities were determined by measuring the liquid and vapor

3 3 volumes, beginning with a tiny vapor volume (<0.05 cm in 6 cm ) and

progressively expanding the volume excessable to the two phase sample.

These data were then extrapolated to zero vapor volume. This technique

was found to be much more rapid and accurate than the other approaches

primarily because of the relatively steep slope of the p-x dew bubble
-18-

isotherms . The liquid densities and compositions are listed in Table 7.

In this temperature range, the vapor densities are too low to be obtained

with any accuracy by this method.

C. PVT data

An existing Burnett PVT apparatus was modified to permit automated

data taking along isochores . The details of the original apparatus and

the partial automation are or will all be available in the archival

literature. [W1965, W1971, W1973, L1987a, L1987b] , therefore a brief

summary should suffice here

A schematic of the apparatus is given in Fig. 3. The essential

components are the Burnett PVT apparatus and transducer, placed in a

temperature-controlled oil bath; an automated pressure injector with

associated vent and pressure valves [W1984] on the balancing side of the

transducer; manually- operated gas -lubricated piston gages for the ranges

0-4, and 0-18 MPa; an automated quartz spiral Bourdon gage for the range

0-10 MPa; and a mixture supply vessel placed in an oven.

The precision of temperature control and measurement is ± 2 mK. The

reproducibility of the pressure transducer is 20 Pa (0.2 mbar) . The

4

accuracy of the piston gages is better than 1 part in 10 . The

reproducibility and accuracy of the spiral Bourdon gage, if corrected for

zero drift, is better than 300 Pa (3 mbar). Both chambers of the Burnett

apparatus (Fig. 3) are filled to the highest pressure that is of interest

with the sample to be studied. The fill and expansion valves are closed

and the pressure is measured while the transducer diaphragm is maintained

in its zero position corresponding to equal pressure on both sides; the

zero position is determined by calibration, with the two sides of the

transducer interconnected, prior to the actual PVT measurements. The
-19-

expansion vessel (the bottom chamber in Fig. 3) is evacuated, the fill

valve closed, the expansion valve opened and closed. The new pressure is

measured, and the process repeated until the lowest pressure is reached

that can be conveniently measured. All pressure measurements are done

with great care on quality, well-calibrated dead-weight gages. The volume

ratio of the Burnett system, defined as N = (V + V )/V where V is the

volume of the top, V that of the bottom chamber, is determined by

sequences of helium expansions, in which the pressure ratios, before and

after expansion, are equal to N except for some very small non- ideality

corrections. For a highly nonideal fluid such as a slightly supercritical

mixture, the pressure ratios depart strongly from N, and the task is to

deduce the gas nonideality from the observed pressure ratios. We have

done this by first analyzing the low-pressure part of the isotherm, where

a quadratic in the density is sufficient to describe the nonideality, and

where nonlinear regression techniques developed by Waxman et al. [W1973]

can be used. Once the density p of the highest point in this interval is

known, the densities at the subsequent higher pressures are obtained by

multiplying p by the appropriate power of N. Finally, all

pressure -density points thus obtained are fitted to a sixth degree

polynomial at the reference temperature. Once this part of the work is

done, the density of any isochore intersecting the reference temperature

can be calculated from the pressure measured at that temperature . For the

90-10 mixture, we measured two Burnett sequences; in one of them, we made

isochoric excursions along five isochores, one liquid density, one nearly

critical and three at gaslike densities. The 90% isobutane - 10%

isopentane mixture was prepared gravimetrically from degassed Matheson

research grade isobutane (85 ppm impurities) and Phillips research grade
-20-

isopentane, reported 99.99+ % pure. Transfering the mixture to the

Burnett apparatus was done at supercritical temperatures through heated

lines. The transfer was done slowly enough that no significant cooling

(with risk of condensation) occurred. Likewise, the Burnett expansions

were done very slowly, to avoid excursions into the two-phase region.

During the isochoric measurements, we repeatedly crossed into the

two-phase region. We found that although equilibrium times were several

hours (compared to one hour in a homogeneous region) , we were able to

reach equilibrium ultimately. On emerging from the two -phase region, the

data in the homogeneous regime were reproduced if a waiting time of about

12 hours was observed. The crossings into the two-phase region have

enabled us to establish one bubble and three dew points with considerable

precision. This permits a very valuable check on the quality of the

thermodynamic surface. Prior to taking the mixture data we measured the

vapor pressure of isopentane in the automated isochoric mode. The results

are given in Table 2, along with those obtained in the visual cell. The

Burnett measurements along the reference isotherm at 425 K are listed in

Table 8. The isochoric PVT data of the mixture are listed in Table 9.

Table 10 summarizes the bubble and dew points.

4. COMPARISONS OF THE EXPERIMENTAL DATA WITH THE THERMODYNAMIC SURFACE

A. Properties of Isopentane

The vapor pressure of isopentane, as measured in the visual cell and

in the PVT apparatus , is compared with the thermodynamic surface in

Table 2 and in Fig. 4. The two data sets agree to within 0.2% in

pressure, which is within the accuracy of the visual cell data. The data

depart from the surface in a systematic way, to a maximum of +0.2% around

350 K and a minimum of -0.3% at the critical point. This appears to be
-21-

about the best we could achieve on the basis of generalized corresponding

states; we used two critical parameters and six adjustable coefficients in

the shape factors to map the isopentane properties onto those of

isobutane. Our vapor pressures are systematically higher than those

reported by Young [Y1895] by a little over 1% (Table 2 and Fig. 4).

Kratzke et al. recently reported similar large positive departures from

Young's early pentane vapor pressure measurements in the same temperature

range [K1985] . There is insufficient knowledge of the temperature scale

used by Young.

The coexisting densities published by Young [Y1895], Table 3, were

used to construct the thermodynamic surface of isopentane. At room

temperature, Young's liquid density is believed to be accurate to 0.1%

[M1984] . At high temperatures, again, there is uncertainty about the

temperature scale. As is evident from Table 3, even though our surface

departs systematically from Young's liquid densities, the deviations,

except at the highest temperature, are all under 0.3%. The vapor

densities show larger, but random departures. A property such as a

saturated vapor density must have been fiercely difficult to measure in

1895, and we consider the agreement with the surface, within 1.5%, as

quite satisfactory.

B. Critical -Line Data of the Mixture

The temperatures, pressures and densities on the critical line are

given in Table 6 for the pure components and three mixtures. As we

discussed in Section 2A, we made no attempt to fit the critical line;

instead, we overestimated T by about 2 K in order to achieve an improved

fit in the supercritical regime. The critical pressures are,

consequently, overestimated by about 0.1 MPa. We fit the critical
-22-

densities to about 2%.

Since the surface, being analytic, has an excluded region of about

30% in density, 6 K in temperature, see equation (10), we attach no

significance to the deviations listed in Table 6.

C. VLE Data for the Mixture

The bubble-point pressures and densities, obtained in the

variable -volume apparatus for mixtures of nominally 5%, 10%, 15% and 50%

isopentane along five isotherms are compared with the surface in Table 7

and in Figs. 5, 6. The bubble densities are fitted to within 0.5%, all

deviations being slightly negative. The bubble pressures show departures

up to 2.2%, especially at the lower temperatures, and the departures are

also mostly negative. Figs. 5 and 6 make clear, however, that the

departures from the surface are not much larger than the scatter of the

data. As mentioned in Section 3B, the pressures were measured on a strain

gage for the range, 0-2.5 MPa with an absolute accuracy no better than 1

kPa; in the temperature range below 300 K, the pressures of most mixtures

are under .3 MPa and the strain gage has reduced relative accuracy. It is

of importance to realize that even if the bubble pressures are fitted

well, the bubble temperature of an isobaric mixture of fixed composition

may be quite far from the one predicted by our surface, especially at the

lower temperatures. For instance, at P = 0.2513 MPa, x = 0.0863, the

bubble point would be reached at 288.89 K, (Table 7), while our surface

predicts it at 0.5 K higher. The reason is that the bubble pressures, at

fixed X, rise only slowly with temperature at the lower temperatures, so

that a small error in the predicted isothermal bubble pressure results in

a large error in the predicted isobaric bubble temperature.
-23-

D. PVT Data of the Mixture

The departures of the experimental PVT data from the thermodynamic

surface are reported in Table 8 (425 K reference isotherm) , Table 9

(isochoric data in the one and two-phase regions) and Table 10 (dew and

bubble points). We report the departures in two different ways --as

percent in pressure, assuming that the temperature, composition and

density are exact, and as percent in density, assuming that the

temperature, composition and pressure are exact. The accuracy of the

surface is most easily assessed by plotting these two deviations,

(exp. - calc. )/calc . , in percent, with respect to the appropriate

variable: pressure on the reference isotherm and temperature on the

isochores. Thus, in Figs. 7 and 8, we depict the pressure and density

deviations, respectively, along the 425 K isotherm as a function of

pressure. We note that the surface represents all pressures to within

0.2%, while the scatter of the pressure data is an order smaller. The

departures of the densities from the surface are within 0.2% both at low

and high densities, but they peak to almost 1% in the vicinity of the

mixture's critical density, which is reached at around 4 MPa: here,

because of the large compressibility, small pressure errors translate into

large density errors.

Pressure and density departures for the five consecutive isochores

are shown in Figs. 9-18. One and two-phase points are marked separately.

3 On the 5.86 mol/dm isochore (Figs. 9, 10) which is at liquid- like

densities, pressure and density departures, though systematic, are mostly

within 0.2% in the one-phase region; there appears to be a difference in

3 slope. The pressure fit to the 3.29 mol/dm isochore, which is close to

the critical isochore, is within 0.2% and the slope is correct. The
-24-

denslty departures, however, are quite large (Figs. 11, 12), a consequence

of the large compressibility. On both isochores, we measured many

two-phase points and fit their pressures well. The density offsets

however, are enormous. This is due to the fact that the 10% mixture still

behaves quite much like a pure fluid: the pressure does not vary much

along isotherms in the two-phase region, and small pressure errors result

in very large density errors. The surface does a fine job on both

3

pressure and density fits to the 1.04 mol/dm isochore (both within 0.1%,

see Figs. 15 and 16), though still not within the scatter of the data.

3 The fits on the 1.85 mol/dm isochore (Figs. 13 and 14) and the 0.58

3 mol/dm isochore (Figs. 17 and 18) show sowewhat larger and systematic

3 departures, especially for the 1.85 mol/dm isochore near the phase

boundary. Although the data are not fitted within experimental error, we

have not been able to improve the overall fit. Even though the isobutane

surface is quite accurate, and six additional adjustable parameters were

available for describing isopentane, three more for the mixtures, any

improved fit in the supercritical regime occurs at the expense of the fit

to the VLE data and vice versa.

E. Bubble and Dew Points from PVT Data

Isochoric PVT data of a mixture of fixed composition experience a

change in slope when they enter the two -phase region, except for the

isochore that passes through the temperature extremum on the dew-bubble

curve in F-T space [D1975] . In our 10% mixture, that particular isochore

is still quite close to the critical isochore [D1985] , which is the one

that does not change slope in a one -component fluid. The mixture critical

3 isochore being at approximately 3.8 mol/dm we are not surprised to find

3 no discernable change of slope on our 3.3 mol/dm isochore. For several
-25-

experimental points, it is impossible to decide whether they were in the

one-or two-phase region; for several others, experiment and model disagree

on their status. On the other four isochores, however, the change in

slope is sharp, and we are able to locate the transition quite well by

fitting low- order polynomials to the one- and two -phase parts of the

isochores and intersecting these polynomials. From visual inspection of

the graphs used to determine the intersections (Figs. 19, 20), and from

analyzing the computational technique, we estimate that the bubble

3

temperature on the 5.8 mol/dm isochore can be obtained to ± 10 mK, the

dew points on the lowest three isochores to ± 30 mK.

The results of the calculation are summarized in Table 9. Assuming

the composition and the transition temperature to be exact we can predict

both the transition pressure and density from the thermodynamic surface.

The measured and predicted values are compared in Table 9 and found to be

3 generally within 0.5% accurate. An exception is the 1.85 mol/dm

isochore, where the density is underpredicted by 1.5%. We had already

noted (Figs. 13, 14) that the surface does not fit the one-phase densities

on this isochore particularly well near the phase boundary.

F. Enthalpy

Koppany and Lenoir [K1979] reported measurements of the enthalpy of

mixtures of nominally 0.80 mole fraction of isobutane in isopentane.

Enthalpies were measured by injecting the mixture into a calorimeter at

fixed pressure and a measured temperature, and then cooling it

o isobarically to a liquid state at 75 F. The enthalpy difference to this

liquid reference state is obtained from the hydrocarbon flow rate and the

amount of refrigerant evaporated.

The authors performed test measurements using pure isobutane at 250
-26-

psia. We have compared their measured enthalpy difference with those

predicted by our Helmholtz function for isobutane. The agreement was

strikingly good.

For the mixture, seven isobars were measured, six of which were

subcritical. Samples of the mixture were taken periodically throughout

the runs and analyzed for composition. The samples contained up to 0.25

mol % n-butane and 0.15 mol % n-pentane, which probably does not affect

their behavior very much. The compositions differed by as much as ± 1.5

mol % from the 80-20 nominal values along individual isobars.

In Fig. 21, we have displayed the data and our predictions for four

of the isobars. Note that the composition of the experimental data and of

our predicted curves varies along isobars. Our predictions, the solid

curves, generally agree well with the data in the liquid phase, but are

somewhat on the low side in the vapor phase, especially near and above the

critical point. The authors' estimate of the location of the phase

boundary [K 1979, Fig. 5-1] is quite far from the one predicted by our

surface (Fig. 21, full curve, for the 80-20 mixture), especially at the

vapor side beyond 360 K, where their estimated phase boundary is about 10

kJ/kg higher than our prediction for the 80-20 mixture. One reason may be

that parts of the highest two-phase isobars measured by the authors

happened to contain isopentane in excess of 20% by as much as 1-2%. Our

measured critical temperature for the 80-20 mixture is about 3 K below the

temperature extremum estimated by the authors. It is unlikely that the

critical point would be that far below the temperature extremum, since the

Moldover-Rainwater model applied to this mixture shows differences less

than 1 K between the critical temperature and the temperature extremum for

all compositions [D1985] . A 2% offset in composition, however, would go a
-27-

long way in explaining the extra width of the dome.

The most worrisome aspect of the data is the strong curvature of the

isobars in the two-phase region. Our model cannot be made to exhibit such

curvature. We do not think that the excellent results obtained with this

calorimeter for pure isobutane guarantee proper functioning if a mixture

is used. In particular, the sample is entered into a side arm at the

desired pressure, and then heated in a relatively short section of tubing

to the Initial temperature. It may not be possible for a mixture to reach

complete composition equilibrium if the desired initial state is in the

two-phase region. This may explain why our agreement with the one-phase

data is so much better than with the two -phase data.

5. IMPURITY EFFECTS

The components of the working fluid mixture as it is used in the

geothermal power plant are by no means as pure as the samples we have used

in our laboratory studies. As a matter of fact, in each of the components

there may be as much as 5% contamination principally by isomers. It is of

course impossible to correct the thermodynamic tables for every possible

type and amount of contamination. Instead, we have tried to make an

estimate of the possible errors in the various properties on the basis of

a worst-case scenario. Since we have only 10% isopentane in the mixture,

even 5% contamination is not going to have a major effect. Therefore, we

decided on calculating the effect of 5% n-butane contamination. We have

estimated the effect on the pressure and on the phase boundaries of

substitution of a fraction of the isobutane by normal butane by developing

a corresponding- states model for the three -component mixture isobutane -

normal butane - isopentane. The critical pressure, temperature and

ideal -gas properties of n-butane were taken from the correlation by Haynes
-28-

and Goodwin [H1982] . A straightforward generalization of equations 17-20

was made by postulating:

ZXXX(V , T ) = Z., (V., = V /h , T., = T /f ) , i4 i4 x' X i4 x' X

(17')

a'^^ (V , T ) = f A?f (V., = V /h , T., = T /f ) XXX - R** T in (h ) , X i4 i4 x' X i4 XX x x

where hXX, f are defined by'

V

c' h =

i4

1 -. X3 (^ (V.^, T.^) 1} + a x^ (1 - x^) {^ (V^^, T^^) 1}

(18')

f =

X

i4

1 ^ ^5 ^^ (V' ^14) 1}

- c -c The pseudocritical constants of the three -component mixture, V and T ,

are calculated from

ttC' 2 -c 2 -c' 2 -c'

V = X., v., + x^ V^ + X , V , X i4 i4 5 5 n4 n4 + 2 X., x^ V.,^ + 2 X., X , v., ,+ 2 X , x^ V , ^ i4 5 i45 i4 n4 i4 n4 n4 5 n45

T^ = x^, T?, + x^ T^ + x^, t"", X i4 i4 5 5 n4 n4

+ 2 X., x^ T.,^ + 2 X., X , T., , + 2 X , x^ f , ^ l4 5 i45 i4 n4 i4 n4 n4 5 n45

with -c' -c i4 n4

14 ^c

n4 A.

(19')
29-

In (17') -(21'), the subscript 14 denotes Isobutane, n4 normal butane, 5

isopentane. As combining rules for T,, and V we used equation (20),

and for the other coefficients in (19') we used

14 n4

^c ^c

14 n4

1/2

n45 n4 5

1/2

14 n4 0.5 (V?,)-*-/^ + 0.5 (V^,)'^^^ i4 n4

V

n45

0.5 n4

1/3 + 0.5

1/3"

(20')

The ideal -gas part of the Helmholtz free energy was the mole fraction

average of the ideal -gas contributions of the individual components, plus

the ideal-mixing term. For phase equilibrium calculations, the chemical

potentials were obtained by [R1969]

:

"14 - ^ - ^ (avav)^^ ^^^ ^

. xj (SA/axj)^^^^^

n4

>'n4

(SA/Sx^^)^^^ Xj

M„4 - A - V (aA/aV)^^

^^^

^

- X3 (SA/3X5)^^^_^

n4

* (1 - x^^)(aA/ax.^)^^^^^_

(21')

^5 = A - V (aA/3V)j^ ^^^ ^ -Ki - XjXaA/axj)^^^^^

n4

- V <«'^/«='n4>T,V,x.
30-

In order to solve for the conditions of coexisting phases, we have

six variables, T, P and two x values in each of the two phases. Three

conditions link the chemical potential for each of the components in the

two phases. Consequently, on choosing T, x., and x ,

, the pressure, and

also the pressure increase over that of the 90-10 pure isobutaneisopentane mixture, can be calculated. In this way the shifted

dew-bubble curve isotherms in P-x space for 2% and 4% normal butane,

respectively, were calculated (Fig. 22). In Fig. 23, we show similar

effects on the dew and bubble densities in p-x space. For 4% n-butane,

the coexistence curve shifts by the equivalent of ~1 K. Finally, Fig. 24

portrays the effect of 2% normal butane on isotherms in V-p space. Note

that near the mixture's critical point the effect of the impurity on the

density, if the pressure is held fixed, is very large. We have also drawn

in several isentropes. Although the choice of zero point is arbitrary,

the change in spacing between the isentropes for isopentane and pure

isobutane compared to those for isobutane with 2% normal butane as one

crosses from subcritical to supercritical densities is very evident,

indicating that the effect of the impurity is felt most near the critical

isentrope

.

6. TABLES OF THERMODYNAMIC PROPERTIES

We have prepared tables of the thermodynamic properties of the

90 mol % isobutane- 10 mol % isopentane mixture along isobars as a

function of temperature The properties tabulated are specific volume,

enthalpy, entropy, the derivatives (d?/dp) and (aP/5T) , and the

specific heat C . The point where the isobaric crossing of the phase

boundary occurs is indicated, together with the properties of the
-31-

coexisting phase at the same pressure and temperature. In two separate

tables, we list the properties at the dew point and at the bubble point,

respectively, for a 90-10 mixture at 5 K temperature increments. Appendix

A contains the tabulation in SI units. Appendix B contains the tabulation

in British units . Appendix C contains the Fortran Computer program that

has been used to generate the tables. The comment sections in the main

program explain the options given to the user for input variables, units

and output

.

7. CONCLUSIONS

We present tabulations of thermodynamic properties of a 90%

isobutane- 10% isopentane mixture. The tables are based on

1. A preexisting Helmholtz function for isobutane that, in general,

predicted densities to 0.1% if pressure and temperature are given.

2. New vapor pressures and old coexistence curve data for isopentane.

3. VLE data for the mixtures of 5-50 mol% isopentane in the range of

288-328 K.

4. A few new critical -line data for mixtures at nominal 20, 35 and 50

mol% isopentane.

5. PVT data for the 90 mol% isobutane- 10 mol% isopentane mixture from

360-430 K.

6. The principle of generalized corresponding states, with isobutane as

the reference fluid.

The predictions of the surface for the pressures and densities in the

one -phase region and on the dew-bubble curve are generally better than

0.5% and, except in the extended critical region, mostly within 0.2%.

They are, however, in general not quite within the accuracy of the data

even though a fair number of additional adjustable parameters (6 for
-32-

isopentane, 3 more for the mixture) have been introduced. The difficulty

is, in part, due to the fact that we are fitting an analytic surface to

data which, for a good part, are near a critical point. We do not think,

however, that this is the full story. It is well known that for accurate

representation of pure -fluid PVT and coexistence curve data,

multiparameter equations are required, see, for instance [H1984] . It is

unlikely that, on substituting part of one species of molecule by another,

only a handful of additional parameters will result in accurate fits to

data for the mixture at all compositions.

For the practical application in question, our surface will be amply

accurate enough, in view of the fact that the composition of the actual

working fluid mixture is the principal source of error.

Acknowledgments

This work was performed under contract DE-AI03-82 SF 11653 with the

Department of Energy of Geothermal and Hydropower Technology, San

Francisco Operations Office, Oakland, CA.

The developement of the semi -automated PVT apparatus was supported by

contract DOE-EAA-77-A-01-6010 , Department of Energy, Office of Basic

Energy Sciences.

Dr. Richard Davis, Center for Absolute Physical Quantities, gave help

and advice with the preparation of the mixture, and allowed us access to

his weighing facilities. We learned about the dew-bubble curves of the

mixture from discussions with J.C. Rainwater. M. Emeruwa took part of the

VLE data.

In order to describe materials and experimental procedures adequately, it

was occasionally necessary to identify commercial products by

manufacturer's name or label. In no instance does such identification
-33-

imply endorsement by the National Bureau of Standards, nor does it imply

that the particular product or equipment is necessarily the best available

for the purpose.
34-

References

[D 1983]

H.A. Davis, Rev. Sci. Instr. 54, 1412.

Low cost tubular sapphire optical cells for study of phase separation in

fluid mixtures.

[D 1985]

D.E. Diller, J.S. Gallagher, B. Kamgar-Parsi , G. Morrison, J.C. Rainwater,

J.M.H. Level t Sengers, J.V. Sengers , L.J. Van Poolen and M. Waxman,

NBSIR 85-3124.

Thermophysical properties of working fluids for binary geothermal cycles.

[D 1975]

T. Do iron, R.P. Behringer and H. Meyer, J. Low Temp. Phys . 24, 345.

[G 1984]

J.S. Gallagher, J.M.H. Levelt Sengers, G. Morrison and J.V. Sengers, NBSIR

84-2971.

Thermodynamic properties of isobutane-isopentane mixtures from 240 to

600 K and up to 20 MPa.

[G 1986]

J.S. Gallagher, Int. J. Thermophysics 7, 923.

An equation of state for isobutane-isopentane mixtures with corrections

for impurities.

[G 1987]

J.S. Gallagher, J. Chem. Eng. Data, submitted.

The modelling of impurity effects in pure fluids and fluid mixtures.

[H 1984]

L. Haar, J.S. Gallagher and G.S. Kell.

NBS-NRC Steam Tables, McGraw Hill/Hemisphere.
-35-

[H 1982]

W.M. Haynes and R.D. Goodwin, NBS Monograph 169.

Thermophysical properties of normal butane from 135 to 700 K at pressures

to 70 MPa.

[K 1980a]

J. Kestin, R. DiPippo, H.E. Khalifa and D.J. Ryley, Editors.

Sourcebook on the production of electricity from geothermal energy. U.S.

Dept. of Energy.

[K 1980b]

CM. Knobler and R.L. Scott, J. Chem. Phys . 73, 5390.

Indirect determination of concentrations in coexisting phases.

[K 1979]

C.R. Koppany and J.M. Lenoir, EPRI Report ER-1034.

Experimental enthalpies for a mixture of 80 mole percent isobutane in

isopentane

.

[K 1985]

H. Kratzke , S. Mueller, M. Bohn and R. Kohlen, J. Chem. Thermo. 17,

283-294.

Thermodynamic Properties of saturated and compressed liquid n-pentane.

[L 1968]

J.W. Leach, P.S. Chappelear and T.W. Leland, AIChE Journal 14, 568.

Use of molecular shape factors in vapor- liquid equilibrium calculations

with the corresponding- states principle.

[LS 1983]

J.M.H. Level t Sengers, B. Kamgar-Parsi and J.V. Sengers, J. Chem. Eng.

Data 28, 354.

Thermodynamic properties of isobutane in the critical region.
-36-

[L 1987a]

D. Linsky, J.M.H. Levelt Sengers and H.A. Davis, Rev. Sci. Instruments,

May.

A semi -automated PVT facility for fluids and fluid mixtures.

[L 1987b]

D. Linsky, J.M.H. Levelt Sengers and J.S. Gallagher, to be submitted to

Fluid Phase Equilibria.

A semi -automated Burnett facility; PVT of a geothermal working fluid

mixture

.

[M 1984]

R. Masui , W.M. Haynes , R.F. Chang, H.A. Davis and J.M.H. Levelt Sengers,

Rev. Sci. Instr. 5^, 1132.

Densimetry in compressed fluids by combining hydrostatic weighing and

magnetic levitation.

[M 1984]

G. Morrison and J.M. Kincaid, AIChE Journal 30, 257.

Critical point measurements on nearly polydisperse fluids.

[R 1969a]

J.S. Rowlinson and I.D. Watson, Chem. Eng. Sci. 24, 1565.

The prediction of the thermodynamic properties of fluids and fluid

mixtures - I. The principle of corresponding states.

[R 1969b]

J.S. Rowlinson, Butterworth, London Equation (4.23) p. 108.

Liquids and Liquid Mixtures.

[S 1974]

D.W. Scott, U.S. Dept. of the Interior, Bureau of Mines Bulletin 660.

The chemical thermodynamic properties of hydrocarbons and related

substances - properties of the alkane hydrocarbons C^ through C^ _ in the

ideal gas state from to 1500 K.
-37-

[W 1965]

M. Waxman andW.T. Chen, J. Res. Nat. Bur. Stand. (U.S.) 69C, 27.

A Rugged Null -Type Pressure Transducer of High Reproducibility for

Accurate Gas Phase PVT Measurements

.

[W 1971]

M. Waxman and J.R. Hastings, J. Res. Nat. Bur. Stand. (U.S.) 15C, 165.

A Burnett Apparatus for the Accurate Determination of Gas Compressibility

Factors and Second Virial Coefficients and an Evaluation of Capability

Based on some Results for Argon and Carbon Dioxide.

[W 1973]

M. Waxman, H.A. Davis, and J.R. Hastings, Proceedings of the Sixth

Symposium on Thermophysical Properties, ASME, New York, 245.

A New Determination of the Second Virial Coefficient of Carbon Dioxide at

o o Temperatures between and 150 C, and on Evaluation of its Reliability.

[W 1982]

M. Waxman and J.S. Gallagher, Proc . 8 th S3rmp . Thermophys . Prop.

J.V. Sengers, Ed. ASME New York, p. 88.

A thermodynamic surface for pure isobutane.

[W 1983]

M. Waxman and J.S. Gallagher, J. Chem. Eng. Data 28, 224.

Thermodynamic properties of isobutane for temperatures from 250 to 600 K

and pressures from 0.1 to 40 MPa.

[W 1984]

M. Waxman, H.A. Davis, M. Horowitz and B. Everhart, Rev. Sci. Instr. 55 . 1467.

Automated pressure regulator.

[Y 1895]

S. Young, Proc. Phys . Soc. London 13, 602.

The thermal properties of isopentane.
38-

\U/

long-Stem Pt Thermometer

o'

thermostated bath

i

pressure

transducer

optical cell

to

gasometer

or to

dead-weight gage

Fig. 1. Visual cell and manifold for critical-point determination.
39-

l-P

J

I

c

J—^

vent

a

C

e

I w

MD

t

vent

Fig. 2. VLE cell and manifold, including volume pump (I-P) and thermal

compressor (T/C)

.
-40-

OP

o w H> bd o fu D C

D 3 (_1. t^ PL X) (D 3

H' I-" O (D rt (D rt rt H« O rt o O i-t 3 (!) - i-d w M < • 3

03 H

03 d 03 3 C t3 a 0) 13 M 03 o K

< ^ 03

(D rt d O C

Xl w

i-h 0) o K s:

I-! 03 Hrt rt K- (D rr 3 a

rt 3

t-l 03 03 o D 3

a P- H- c I-h o 03 O

H> c M

d rt a

(jq o

3

" 3 03 03 H- rt c

X (D rt

rt a O

C 3

t-i T) 03

CD I-! rt W (D 0) m a

K- w

d C T)

•-! >-; m n> (C

c: W n (TP w

fD 03 c

n OP M

n (D CD

f-! w

H' - rt

h-' o

fu

CD

(A _

CO 3

C O

•o =

CD 3

CD X- o 2 O

Q> E O

*S n CD

CD o a1 3

I"

2-^—®—

^W(r>

JnW\\\\nXxI \\4\X^

3 \ -i

^

Q.C

o

CD
-41-

ind

o

q

d

ind

I

in o

02

I

in

CM

o b o

o

o

D

O

in

CO QD

o

o

in

CO oo

in

CV2- CO

X ©0

o

o

CO

in

CM

-I I I I- -I I I L.

OD

O

in

-I r q

d

ind

O

"T"

in

sand dVA 'aaia %

ohm

in

CM

'^

(1) ^4Js

oM

iw o

o U

-* u

c

0)(X w

o

w

«v W tH

in tf

O

^^ 5-1 ^

;3M

«

W PD-. !-l

in W

O •

> nj CO E-H M-l

d) u

rC 13

4-) M

4-1 O

O tHe

CO cfl <D C

in U >, CM

CO

13 TJ

4-) O

U E

tti 5-1 Cu (U 0) ^

Q 4J

<h o

o . CO bO

•H

fe

in

CM

CM

I
-42-

0.8

- 0.7

- 0.6

0.3 0.4 0.5 mole fraction isopentane

0.9

Fig. 5. Bubble pressures of mixtures of isobutane and isopentane on five

isotherms

COB\I—

o

a

COcQ

10.0

9.5

9.0

- 8.5

8.0 0.3 0.4 0.5 0.6 0.7 mole fraction isopentane

Fig. 6. Liquid densities at the bubble points of mixtures of isobutane

and isopentane on five isotherms
-43-

1.0

0)

(00)

>

O

1.0

425 K

JS- ao

J . 1-

oo

J 1 i 1 1 I L.

o o

K

I

I 1 L_

r' ' -I 1—

_j L

3 4

Pressure, MPa

5

Fig. 7. Percentage departures 5P = (P - P . )/P ^ of the 425 K

exp calc calc

isotherm from the thermodynamic surface, under the assumption

that temperature, composition and density are exact.

_i I I 1 1

' -I 1 L -I 1 1 1 1 1 I L 425 K

c

Q

>

"TS" OO oo

I 1 r I

1

1 1 I I [ T ! r r—-|

1 2 3

T I 1

I

1 I I I

I 4 5

Pressure, MPa

Fig. 8. Percentage departures So = (p - p ^ )/p ^ of the 425 K

exp ccalc calc

isotherm from the thermodynamic surface, under the assumption

that temperature, composition and pressure are exact.
-44-

0.5

400

0)u

:i

tf}

tf) <au

CU 0.0 >

-0.5

5.86 mol/dm3

410

I -1 1 1 i_ 420

I

400

.oo

410 420

Temperature, K

430

-J 1_

430

Fig. 9. Percentage departures 5P = (P - P , )/P , of the 5 86

exp calc ' calc

3 inol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and density are exact,

o - one-phase, x - two-phase data.

430

400 410 420 430

Temperature, K

Fig. 10. Percentage departures Sp = (p exp

p . )/p , of the 5.86 calc ' calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact.
-45-

0.5

u

?

CO

CO

Pu, 0.0

400

fe^

-0.5

405

I 410

I 415

I 420

1 . L. 425

X X ^ X X X

400

-" 1

405

- 1 '- 410 415

Temperature, K

3.29 mol/dm

-"—I—I

420 425

Fig. 11. Percentage departures 5P == (P

exp

P , )/P , of the 3.29

calc calc

mol/dm isochore from the thermodynamic surface , under the

assumption that temperature, composition and pressure are exact,

o - one-phase, x - two -phase data D status dubious.

6^

400

15.0

tf, 10.0 n

Q 5.0H >

-d 0.0

-5.0-

400

405

I 410 415 420

I

' ' ' 1 , i 1 1 L. i 1 425

3.29 mol/dm^

o O

405 410 415

Temperature, K

420 425

Fig. 12. Percentage departures 8p = (p exp

p , )/p T of the 3.29

calc calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact,

Symbols as in Fig. 11.
-46-

400 410

0.0

0)

to

(DU

PU>

-d -0.5-1

-1 J- 1.85 mol/dm3

^?

400

<S>° oo oo o c$>

410

420

_. . 1 L.

420

Temperature, K

430

430

Fig. 13 Percentage departures 6? = (P^^^ - Pcalc^/^calc °^ ^^^ ^'^^

mo 1/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact.

400 410

1 420

1 43(

1.85mol/dm3

1.5- (to _

>>

enC

<D Q

1.0-

0.5-

o °°-„

<i) o

o

o o o o >

ri 0.0- ^

-0.5-

1 1 400 410 420

Temperature, K

430

Fig. 14. Percentage departures 8p = (p exp

p . )/p -, of the 1.85 calc ' calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact,
-47-

430

400

Temperature, K

430

Fig. 15. Percentage departures 5P = (P - P )/P of the 1.04

6X.p C3.J_C C3.J_C 3 mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact,

>

a>

6^

380

^ 0.1-

a> Q

0.0

390

I 400

I 410

I 420I 430

1.04 mol/dm3

o o

—

I

1 1 1

1 380 390

- 1 <- 400

-. 1

1 r- 410

I I 1 1 1 420 430

Temperature, K

Fig. 16. Percentage departures Sp = (p

3 . exp

p , )/p , of the 1.04 calc calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact.
350

0.3 H U

^ 0.2 H

a>

6^ 0.0

350

360

I 370

I

-48-

380 390 400

I

I I I I I I——I I 1 1 1 L. 410 420

I 1 1 1 i_

-"—'—1

360

-——I

370

0.58 mol/dm3

o o

o o

-1 1 1 1

1 1 1 1

1 1 1 1 1

1

' 1 > '

1

' >" 380 390 400 410 420

Temperature, K

Fig. 17. Percentage departures 5P = (P

exp

P ^ )/P T of the 0.5^ calc calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact,

350

0.0

CO

0) ° -0.2

0) T3

-0.4-

360

I 370I 380

I 390

'

400 410

I 420

* * i_

o o

o o

0.58 mol/dm3

-T I I f- I T 1 -I r I I '? I J

I I I "T— "J ^"' 7 T I 350 360 370 380 390

Temperature, K

400 410 420

Fig. 18. Percentage departures 8p = (p exp

p , )/p -, of the 0.5( calc ' '^calc

mol/dm isochore from the thermodynamic surface, under the

assumption that temperature, composition and pressure are exact,
-49-

72K

410 415 420

TEMPERATURE, K

Fig. 19. Example of an isochorlc Intercept on the bubble side: the one3 and two-phase parts of the 5.86 mol/dm isochore fitted

separately to low- degree P(T) polynomials, and intersected.

350

0.05

0.00--

OhS -0.05-

W -0.10-

a,

-0.15-

-0.20-

360

I I , 370

-1 I I ,

JbO o

380

I I , 390 400

350 360 370 380 390 400

TEMPERATURE, K

410

I I . . 420

-o © e o D410 420

430

0.05

0.00

--0.05

-0.10

--0.15

-0.20 430

Fig. 20. Example of an isochoric intercept on the dew side: the one- and

two-phase parts of the 0.58 mol/dm^ isochore fitted separately

to low-degree P(T) polynomials, and intersected.
•50-

o

C\2 -*

ta

for

the

ewhat

below

ce

the

o cfl e Id o t) o "d '^

-of-mixlng

urface

is

s

annot

repro

o w >^ w o

00

CO

•s rH 5-1 -O • 0)u

cfl d C w ^ O cfl <U •U .H C ^5-1

Q) • (O, cfl

Q) cy\ -P C

u ^ r^ w ;3 <D

•P C^v o

rH 0) ^

0^ O TJ a

p li^; .^^ Q) o

CO —•WW

0) cfl CO (D O <U 5-1 ^ ^

cfl 5-< O CL, 4-1 ;3 &,

5-1 -U cfl Q) ^ ^ > ^ W -H 4J S <u v^ ^ n

;3 o 4J cfl O CM <U

' c c

4-) O O

o O CX3 (U -^ cfl 5-1 CO P t-i -u ;3

•r-l cfl cfl 4-> 4-1 C T! cfl •rH >

(u e cu !-i Xi O JG ^ H C 4-> O

1-1 CM o

C\2

• CO hO

o'ooe O'OOt

~i

' r oooe 0002 OOOT 00
-51

MOLE FRACTION ISOPENTANE

Fig. 22. The effect of substituting, respectively, 2 and 4 mol% of normal

butane for isobutane. The dew-bubble curves in p-x space become

wider and the shift in the location of the top of the dome for

4% normal butane is the equivalent of a drop in temperature of

1 K if no contamination were present.

3.8-

.u-a-,^ ^7"

3.2-

3.0

0.1MOLE FRACTION ISOPENTANE

Fig. 23. The effect of 2% and 4% normal-butane substitution on the dew

and bubble pressures in P-x space.
-52-

3 DENSITY, Mol/dm^ 5

Fig. 24. The effect of 2% normal -butane substitution on the P-p isotherms

and isentropes. The absolute assignment of the isentropes is

irrelevant. The largest shifts in density at fixed pressure

occur near the critical density of the mixture.
-53-

TABLE 1 COEFFICIENTS OF THE REFERENCE HELMHOLTZ FREE ENERGY

FUNCTION FOR ISOBUTANE

AOQ 27 849029

AOl 58 1382356

A02 050937093

A03 2 5252496

A04 346 6523555

A05 2 5515510

A06 -53 012165

A07 3 3434600

A08 1194506

A09 -38 124442

XO 7 9688113

AlO 3.0020353 YD .15388314

All -6.1529971 Yl -.039169870

A12 -1.4570002 Y2 -.25198404-03

A13 . 13342155 Y3 .98801205-06

A14 -.90043710-04 A20 3.6250

Bll -9.6153074 B23 -50.009149

B21 27.935713 B43 231.53999

B41 -125.69635 B63 -380.80769

B51 544.06550 B83 261.20687

B61 -479.48565 B14 -22.934154

B81 141.34133 B64 -14.503027

B12 -12.372626 B15 -10. 167777

B32 -34.731447 B25 30. 142576

B52 -575.69010 B55 -33.549797

B62 532.10066 B85 25.502886

B72 415.02454 B26 -.53441617

B82 -423.59614 B86 .037213690

B13 58. 118955 ZO .38796166
-54-

TABLE 2.

THE VAPOR PRESSURE OF ISOPENTANE AS MEASURED IN THE VISUAL

CELL, IN THE PVT APPARATUS AND IN REF[Y1895].

T P EXP P CALC (EXP - CALC) /EXP

DEG K MPA MPA %

Y0UNG[yi895] 293.150 0.0763 0.0770 -1.00

313. 150 0.1521 0. 1517 0.24

333.150 0.2715 0.2728 -0.48

353. 150 0.4510 0.4564 -1.18

373. 150 0.7127 0.7202 -1.05

393. 150 1.0690 1.0838 -1.38

413.150 1.5511 1.5687 -1. 14

433.150 2. 1758 2.2004 -1. 13

453.150 2.9691 3.0140 -1.51

PVT 303.165 0.1096 0.1097 -0.06

APPARATUS 313.500 0. 1535 0. 1534 0.07

314. 124 0.1565 0. 1564 0.06

314. 125 0.1565 0. 1565 0.02

323.876 0.2104 0.2099 0.22

334.278 0.2820 0.2813 0.22

343.508 0.3597 0.3590 0.21

343.508 0.3599 0.3590 0.25

353.974 0.4666 0.4655 0.23

364.475 0.5956 0.5947 0.16

373.689 0.7292 0.7286 0.09

373.951 0.7335 0.7327 0.12

383.975 0.9037 0.9033 0.05

394.015 1. 1024 1. 1021 0.03

395.956 1. 1435 1 . 1440 -0.04

403.872 1 . 3264 1.3272 -0.06

403.873 1.3261 1.3272 -0.08

411.913 1.5328 1.5348 -0.13

411.914 1.5345 1.5348 -0.02

414.532 1.6058 1.6074 -0.10

419.870 1.7606 1.7632 -0.15

VISUAL CELL 370.785 0.6838 0.6842 -0.06

386.072 0.9431 0.9424 0.08

400.529 1.2477 1.2473 0.03

411.407 1.5208 1.5210 -0.02

425.513 1.9387 1.9400 -0.07

437.593 2.3593 2.3638 -0.19

447.995 2.7761 2.7840 -0.29

454.576 3.0728 3.0804 -0.25
-55-

T,K

TABLE 3

COEXISTING DENSITIES OF ISOPENTANE [Y1895]

SAT. LIQUID DENSITY

M0L/DM3

EXP CALC % DIFF

SAT. VAPOR DENSITY

M0L/DM3

EXP CALC % DIFF

293. 15 8.588 8 603 -0 17

313. 15 8.299 8 320 -0 25

333. 15 7.996 8 016 -0 26

353. 15 7.678 7 689 -0 14

373. 15 7.315 7 328 -0 17

393. 15 6.917 6 920 -0 03

413. 15 6.434 6 441 -0 11

433. 15 5.829 5 835 -0 09

453. 15 4.848 4 894 -0 94

0333 0328 + 1 22

0624 0625 -0 18

1081 1078 + 20

1774 1793 -1 07

2800 2823 -0 83

4305 4324 -0 46

6553 6572 -0 29

1 0102 1 0083 + 19

1 7436 1 7289 +0 85

TABLE 4

CRITICAL PARAMETERS AND COEFFICIENTS OF THE SHAPE FACTORS

USED TO CHARACTERISE THE HELMHOLTZ FUNCTION OF ISOPENTANE

RELATIVE TO THAT OF ISOBUTANE.

P" = 3.3707 MPA

T^ = 460.51 K

a„ = .01

.0058

.015

1.

-.067

-.02

-.035
56-

TABLE 5.

COMBINATION RULES PARAMETERS USED TO CHARACTERISE THE HELMHOLTZ

FUNCTION OF THE MIXTURE IN TERMS OF THOSE OF THE PURE COMPONENTS,

k = 1.003

S. = 1.005

a = 60000.

TABLE 6

.

CRITICAL LINE DATA FOR THE MIXTURE OF ISOBUTANE AND ISOPENTANE

X CRIT.TEMP.,K CRIT . PRESS ., MPA CRIT . DENSITY, M0L/DM3

EXP CALC EXP CALC EXP CALC

0.0 407.84 409.66 3.629 3.736

0.1000 416.23 3.777

0.2001 419.92 422.38 3.677 3.793

0.3493 428.71 430.90 3.650 3.780

0.5073 437.35 439.27 3.615 3.733

1.0 460.51 462.52 3.371 3.470

3 880 3 835

3 776

3 781 3 704

3 662 3 607

3 649 3 497

3 265 3 205
-57-

TABLE 7.

BUBBLE-POINT PRESSURES AND DENSITIES ALONG FIVE ISOTHERMS

IN MIXTURES OF ISOBUTANE AND ISOPENTANE.

TEMP MOLE FR. PRESSURE, MPA DENSITY, M0L/DM3

K X EXP CALC % DIFF EXP CALC % DIFF

288 890 0.0505 2524 0.2542 +0.71% 9.6108 9.6137 +0.03%

0.0863 2513 0.2469 -1.78 9.5960 9.5800 -0. 17

0. 1454 2399 0.2348 -2. 17 9.5675 9.5302 -0.39

0.4968 1685 0.1671 -0.83 9.3110 9.2960 -0.16

0.5010 1653 0. 1663 + 0.59 9.3041 9.2931 -0. 12

0.5097 1632 0. 1647 + 0.90 9.2790 9.2868 -0.08

298 337 0.0505 3376 0.3382 + 0. 18 9.4233 9.4175 -0.06

0.0863 3336 0.3286 -1.52 9.4206 9.3872 -0.36

0.1454 3175 0.3128 -1.50 9.3800 9.3429 -0.40

0.4968 2270 0.2247 -1.01 9.1483 9.1364 -0. 13

0.5010 2238 0.2237 -0.03 9.1449 9. 1337 -0. 12

308 327 0.0505 4490 0.4481 -0.20 9.2013 9.2007 -0.01

0.0863 4405 0.4355 -1. 15 9.1903 9.1746 -0.17

0. 1454 4197 0.4149 -1. 15 9.1575 9.1366 -0.23

0.4968 3045 0.3012 -1.09 8.9542 8.9616 + 0.08

0.5010 2994 0.2999 + 0.18 8.9469 8.9593 + 0.14

318 496 0.0505 5869 0.5854 -0.26 8.9993 8.9688 -0.34

0.0863 5740 0.5691 -0.86 8.9839 8 . 9472 -0.41

0. 1454 5464 0.5426 -0.69 8.9630 8.9164 -0.52

0.4968 4029 0.3980 -1.23 8.8137 8.7765 -0.42

0.5010 3965 0.3963 -0.04 8.7712 8.7745 + 0.04

0.5097 3894 0.3930 + 0.92 8.8082 8.7703 -0.43

328 480 0.0505 7498 0.7485 -0. 17 8.7512 8.7279 -0.27

0.0863 7324 0.7278 -0.63 8.7520 8.7113 -0.47

0. 1454 6978 0.6945 -0.48 8.7535 8.6882 -0.75

0.4968 5145 0.5143 -0.04 8.6170 8.5862 -0.36

0.5010 5139 0.5123 -0.31 8.5955 8.5846 -0. 13
-58-

TABLE 8.

PRESSURE-DENSITY DATA ON THE 425 K BURNETT REFERENCE

ISOTHERM FOR THE 90 MOL % ISOBUTANE-10 MOL % ISOPENTANE MIXTURE

TEMP PRESSURES, MPA DENSITIES, MOL /DM3

K EXP CALC % DIFF EXP CALC % 1DIF

425.21 5 82331 5.80979 + .23 5 .86066 5 .86704 _ .11

425.21 4 .98785 4.98327 + .09 5 .29857 5 .30322 - .09

425.21 4 22749 4.23154 -.10 3 .29031 3 .27135 + .58

425.21 4 15247 4. 15821 -.14 2 . 97473 2 .95279 + .74

425.21 3 .61751 3.62458 -.20 1 .84725 1 .83849 + .47

425.21 3 .46254 3.46864 -.18 1 .67008 1 .66374 + .38

425.21 2 .64167 2.64297 -.05 1 .03709 1 .03633 + .07

425.21 2 .46662 2.46725 -.03 .93762 .93728 + .04

425.21 1 .71716 1.71635 + .05 .58225 .58258 - .06

425.21 1 .04504 1 . 04436 + .07 .32689 .32712 - .07

425.21 .95415 .95350 + .07 .29553 .29575 - .07

425.21 .61346 .61312 + .05 .18352 .18363 - .06

425.21 .55765 .55735 + .05 .16592 .16601 - .06

425.21 35299 .35290 + .03 .10303 .10306 - .03

425.21 32009 .32003 + .02 .09315 .09317 - .02
-59-

TABLE 9.

PVT DATA FOR THE 90 MOL % ISOBUTANE-10 MOL % ISOPENTANE MIXTURE

ALONG FIVE ISOCHORES

TEMP PRESSURES MPA IDENSITII:s, MOL /DM

K EXP CALC % DIFF EXP CALC % DIFF

428 377 6 25193 6 23130 + .33 5 85988 5 86883 — 15

425 215 5 82568 5 81045 + .26 5 86066 5 86783 - 12

423 177 5 55282 5 54077 + .22 5 86116 5 86717 - 10

421 145 5 28137 5 27319 + .15 5 86166 5 86600 - 07

420 057 5 13681 5 13049 + .12 5 86193 5 86540 - 06

419 046 5 00301 4 99826 + .10 5 86218 5 86487 - 05

418 136 4 88298 4 87954 + .07 5 86240 5 86441 - 03

417 074 4 74323 4 74139 + .04 5 86267 5 86378 - 02

416 110 4 61644 4 61635 + .00 5 86290 5 86296 + 00

415 072 4 48136 4 48212 -.02 5 86316 5 86267 + 01

414 083 4 35215 4 35462 -.06 5 86340 5 86173 + 03

413 571 4 28604 4 28878 -.06 5 86353 5 86164 + 03

413 030 4 21576 4 21932 -.08 5 86366 5 86115 + 04

413 076 4 22185 4 22522 -.08 5 86365 5 86128 + 04

412 063 4 09079 4 09548 -.11 5 86390 5 86046 + 06

411 048 3 96046 3 96593 -. 14 5 86415 5 85996 + 07

410 043 3 83198 3 83810 -.16 5 86440 5 85949 + 08

409 079 3 70939 3 71593 -.18 5 86463 5 85916 + 09

408 068 3 58129 3 58826 -.19 5 86488 5 85874 + 10

407 061 3 45438 3 46159 -.21 5 86513 5 85845 + 11

406 047 3 32798 3 33455 -.20 5 86538 5 85896 + 11

405 035 3 20295 3 20827 -.17 5 86563 5 86013 + 09

404 027 3 13053 3 13428 -.12 5 86588 5 20041 + 12 80 2PH

403 549 3 10618 3 11004 -.12 5 86600 5 17274 + 13 40 2PH

403 117 3 08431 3 08826 -.13 5 86612 5 14876 + 13 93 2PH

402 534 3 05481 3 05906 -.14 5 86627 5 08753 + 15 31 2PH

423 172 4 12199 4 12568 -.09 3 29059 3 26952 + 64

421 139 4 01640 4 01988 -.09 3 29087 3 26544 + 77

419 106 3 91014 3 91389 -.10 3 29115 3 25357 + 1 14

417 128 3 80633 3 81056 -.11 3 29142 3 22616 + 1 98

416 115 3 75285 3 75756 -.13 3 29156 3 19384 + 2 97

415 100 3 69888 3 70130 -.06 3 29170 3 21267 + 2 46 2PH*

414 079 3 64352 3 64356 -.00 3 .29185 3 29070 + 03 2PH*

413 060 3 58543 3 58656 -.03 3 .29199 3 24978 + 1 30 2PH*

412 053 3 52888 3 53087 -.06 3 .29213 3 21456 + 2 .41 2PH*

411 035 3 47230 3 47525 -.08 3 .29229 3 17432 + 3 .72 2PH

410 033 3 41760 3 42114 -.10 3 .29245 3 14574 +4 .66 2PH

409 070 3 36567 3 36974 -.12 3 .29260 3 11821 + 5 .59 2PH

408 060 3 31176 3 31687 -. 15 3 .29277 3 08467 + 6 .75 2PH

407 049 3 25857 3 .26310 -.14 3 .29293 3 05501 + 7 .79 2PH

406 040 3 20612 3 .21013 -. 12 3 .29309 3 02385 + 8 .90 2PH

405 030 3 15424 3 . 15780 -. 11 3 .29325 2 99093 + 10 . 11 2PH

404 016 3 10318 3 . 10595 -.09 3 .29342 2 97410 + 10 .74 2PH

403 007 3 05271 3 .05501 -.08 3 .29358 2 94388 + 11 .88 2PH
-60--

TABLE 9. (CONT .)

TEMP PRESSURES MPA DENSITIES, M0L/DM3

K EXP CALC % DIFF EXP CALC % IDIF

423 171 3 56607 3 57319 — .20 1 84741 1 83816 + 50

421 130 3 51420 3 52151 - .21 1 .84757 1 .83761 + 54

419 097 3 46228 3 46978 - .22 1 84773 1 83698 + 58

417 119 3 41143 3 41919 - .23 1 .84788 1 .83616 + 63

415 085 3 35879 3 36690 - .24 1 .84804 1 .83507 + .70

413 065 3 30597 3 31469 - .26 1 .84819 1 83339 + 80

413 065 3 30621 3 31469 - .26 1 .84819 1 .83379 + 78

411 033 3 25260 3 26188 - .29 1 .84835 1 .83156 + .91

409 226 3 20457 3 21465 - .31 1 .84849 1 .82910 + 1 05

409 073 3 20045 3 21064 - .32 1 .84850 1 .82880 + 1 .07

408 055 3 17334 3 18391 - .33 1 .84858 1 .82739 + 1 . 15

407 525 3 15901 3 16997 - .35 1 .84862 1 .82624 + 1 .21

407 136 3 14845 3 15972 - .36 1 .84865 1 .82531 + 1 .26

406 624 3 13467 3 14620 - .37 1 .84869 1 .82433 + 1 .32

406 138 3 12141 3 13336 - .38 1 .84873 1 .82303 + 1 .39

405 613 3 10749 3 11946 - .39 1 .84877 1 .82248 + 1 .42

405 140 3 09445 3 10692 - .40 1 .84881 1 .82091 + 1 .51

425 201 2 64156 2 64286 _ .05 1 .03709 1 .03632 + .07

421 123 2 59287 2 59413 - .05 1 .03727 1 .03650 + .07

417 114 2 54473 2 54588 - .05 1 .03744 1 .03671 + .07

413 057 2 49556 2 49667 - .04 1 .03762 1 .03688 + .07

409 062 2 44702 2 44783 - .03 1 .03779 1 .03724 + .05

405 018 2 39726 2 39795 - .03 1 .03797 1 .03747 + .05

400 993 2 34726 2 34785 - .02 1 .03814 1 .03770 + .04

396 995 2 29712 2 29759 - .02 1 .03832 1 .03795 + .04

392 953 2 24588 2 24624 - .02 1 .03849 1 .03819 + .03

388 980 2 19499 2 19521 - .01 1 .03867 1 .03848 + .02

386 973 2 16893 2 16920 - .01 1 .03875 1 .03851 + .02

386 972 2 16893 2 16918 - .01 1 .03875 1 .03852 + .02

384 963 2 14263 2 14299 - .02 1 .03884 1 .03850 + .03

421 142 1 69328 1 69243 + .05 .58234 .58271 _ .06

417 132 1 66965 1 66874 + .05 .58244 .58284 - .07

413 074 1 64552 1 64466 + .05 .58254 .58292 - .07

409 127 1 62217 1 62113 + .06 .58264 .58311 - .08

405 133 1 59820 1 59720 + .06 .58274 .58320 - .08

399 016 1 56147 1 56030 + .07 .58289 .58345 - .10

388 984 1 49983 1 49906 + .05 .58313 .58353 - .07

378 989 1 43889 1 43699 + .13 .58338 .58442 - .18

369 030 1 37626 1 37393 + .17 .58362 .58501 - .24

363 044 1 33799 1 33533 + .20 .58377 .58543 - .29

360 100 1 31860 1 31614 + .19 .58384 .58543 - .27

359 693 1 31718 1 31348 + .28 .58385 .58625 - .41
-61-

TABLE 9 . ( CONT .

)

POINTS WHICH APPEAR TO BE 2-PH FROM EXPT, AND 1-PH FROM SURFACE

TEMP PRESSURES MPA DENSITIES, M0L/DM3

K EXP CALC % DIFF EXP CALC % IDIF

131 432 3 07174 3 09039 .61 1 .84485 1 .80305 2 27

130 969 3 04944 3 07811 - .94 1 .84489 1 .78081 3 47

130 462 3 02505 3 06464 -1 .31 1 .84493 1 .75670 4 78

129 941 2 99996 3 05078 -1 .69 1 .84497 1 .73209 6 12

110 808 2 12265 2 12982 - .34 1 .03888 1 .03207 66

109 810 2 08795 2 11671 -1 .38 1 .03893 1 .01159 2 63

109 804 2 08771 2 11663 -1 .39 1 .03893 1 .01144 2 65

108 794 2 05273 2 10332 -2 .46 1 .03898 .99090 4 63

107 848 2 02050 2 09080 -3 .48 1 .03902 .97218 6 43

loe- 849 1 98657 2 07754 -4 .58 1 .03906 .95256 8 33

ss 954 1 30345 1 30963 - .47 .58387 .57986 69

85 938 1 30279 1 30952 - .52 .58387 .57950 75

85 373 1 28991 1 30580 -1 .23 .58388 .57355 1 77

84 851 1 27751 1 30237 -1 .95 .58389 .56772 2 77

83 946 1 25626 1 29641 -3 .20 .58392 .55778 4 48

81 951 1 21056 1 28321 -6 .00 .58397 .53653 8 12

THE POINTS IDENTIFIED WITH ' 2PH ' REPRESENT MEASUREMENTS IN THE

2-PHASE REGION. THE IDENTIFICATION '2PH*' REPRESENTS POINTS WHICH

ARE BELIEVED TO BE SINGLE-PHASE POINTS BUT IN THE 2-PHASE REGION OF

THE SURFACE. (THOSE WITH T>140 C ARE ALSO IN THE CRITICAL REGION.)
-62-

TABLE 10.

BUBBLE AND DEW POINTS FROM PVT DATA

TEMP PRESSURES, MPA DENSITIES, M0L/DM3

K EXP CALC % DIFF EXP CALC % DIFF

B 404.753 3.16785 3.17316 -.17 5.86568 5.86010 +.10

D 404.946 3.08925 3.10180 -.41 1.84890 1.82059 +1.53

D 384.273 2.13373 2.13396 -.01 1.03887 1.03866 +.02

D 361.148 1.32575 1.32299 +.21 .58381 .58558 -.30
-63-

APPENDIX A.

Tables of Values for the Thermodynamic Properties

of the 0.1 Mole Fraction Isopentane in Isobutane Mixture

in SI Units

Table Al presents properties for both the dew-points and the

bubble-points and at increments of both temperature and pressure. Also

shown are the concentrations and thermodynamic properties of the

coexisting phase.

Table A2 presents properties along isobars at increments of

temperature from the compressed liquid through the superheated vapor. At

the bubble -points and dew-points the concentrations and values for the

thermodynamic properties of the coexisting phase are also shown.

The intervals for both of these sets of tables are chosen such that

for most purposes a linear interpolation between the values presented will

give values for the thermodynamic properties to within the uncertainty of

the calculated values. In order to facilitate smoother interpolations,

the values of the properties presented here have from one half to one more

significant figure than would be justified by the uncertainty of these

calculated values
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-68-

Table A2. THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

VAPOR, P = 0.01 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 3 3352 -123 5 2719 0332 000042 1 399

250 3 4761 -109 4 3296 0346 000040 1 443

260 3 6170 -94 8 3867 0360 000039 1 488

270 3 7577 -79 8 4433 0374 000037 1 534

280 3 8984 -64 2 499B 0389 000036 1 580

290 4 0389 -48 2 5561 0403 000035 1 626

300 4 1794 -31 7 6120 0417 000034 1 673

310 4 3198 -14 7 6677 0431 000032 1 720

320 4 4601 2 7 7230 0445 000031 1 767

330 4 6003 20 6 7782 0459 000030 1 814

340 4 7406 39 8330 0473 000030 1 861

350 4 8807 57 8 8877 0487 000029 1 908

360 5 0209 77 2 9421 0501 000028 1 955

370 5 1610 96 9 9963 0515 000027 2 001

380 5 3010 117 2 1 0503 0529 000026 2 048

390 5 4411 137 9 1 1040 0543 000026 2 093

400 5 5811 159 1 1576 0558 000025 2 139

410 5 7211 180 7 1 2110 0572 000024 2 184

420 5 8611 202 7 1 2641 0586 000024 2 228

430 6 0010 225 2 1 3171 0600 000023 2 272

440 6 1409 248 2 1 3698 0614 000023 2 316

450 6 2809 271 5 1 4223 0628 000022 2 359

460 6 4208 295 3 1 4746 0642 000022 2 401

470 6 5607 319 6 1 5267 0656 000021 2 443

480 6 7005 344 2 1 5786 0670 000021 2 484

490 6 8404 369 2 1 6302 0684 000020 2 524

500 6 9803 394 7 1 6816 0698 000020 2 564

510 7 120 420 5 1 7327 0712 000020 2 603

520 7 260 446 7 1 7836 0726 000019 2 642

530 7 400 473 3 1 8343 0740 000019 2 680

540 7 540 500 3 1 8847 0754 000019 2 717

550 7 679 527 6 1 9348 0768 000018 2 754

560 7 819 555 3 1 9848 0782 000018 2 790

570 7 959 583 4 2 0344 0796 000018 2 826

580 8 099 611 8 2 0839 0810 000017 2 861

590 8 239 640 6 2 1331 0824 000017 2 895

600 8 378 669 7 2 1820 0838 000017 2 929
-69-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg K

V

mS/kg

LIQUID, P = 0.04 MPa

H

kJ/kg

240.0 0.001606 -507.3

241.69 0.001610 -503.69

COEXISTING VAPOR (x=.0203)

241.69 0.8440 -110.0

S DP/DD

kJ/(kg.K)

-1.4962

-1.4813

0.0972

0.774

0.763

DP/DT CP

kJ/(kg.K)

0.788

0.781

0.0331 0.000172

2. 109

2. 117

1.419

VAPOR

COEXISTING LIQUID (x=.3580)

247.39 0.001572 -527.1 -1.4593 0.766 0.764 2.093

247 39 8476 -114 5 1172 0332 0. 000168 1 442

250 8570 -110 7 1323 0336 000166 1 453

260 8932 -96 1 1898 0351 000159 1 497

270 9292 -81 2468 0366 000152 1 542

280 9651 -65 3 3036 0381 000146 1 587

290 1 0009 -49 2 3601 0396 000141 1 633

300 1 0366 -32 7 4163 0410 0. 000136 1 679

310 1 0722 -15. 6 4721 0425 000131 1 725

320 1 1078 1 9 5276 0439 000127 1 772

330 1 1433 19 8 5829 0454 000123 1 818

340 1 1788 38 2 6379 0468 000119 1 865

350 1 2142 57 1 6926 0483 000116 1 912

360 1 2496 76 5 7471 0497 000112 1 958

370 1 2850 96 3 8014 0511 000109 2 005

380 1 3203 116 6 8555 0525 000106 2 051

390 1 3556 137 3 9094 0540 000104 2 096

400 1 3908 158 5 9630 0554 000101 2 141

410 1 4261 180 1 1 0164 0568 000098 2 186

420 1 4613 202 2 1 0697 0582 000096 2 231

430 1 4965 224 7 1 1227 0597 000094 2 274

440 1 5317 247 7 1 1754 0611 000092 2 318

450 1 5668 271 1 1 2280 0625 000089 2 360

460 1 6020 294 9 1 2803 0639 000088 2 403

470 1 6371 319 1 1 3325 0653 000086 2 444

480 1 6722 343 8 1 3843 0667 000084 2 485

490 1 7074 368 8 1 4360 0681 000082 2 526

500 1 7425 394 3 1 4874 0696 000080 2 565

510 1 7776 420 1 1 5386 0710 000079 2 605

520 1 8126 446 4 1 5895 0724 000077 2 643

530 1 8477 473 1 6402 0738 000076 2 681

540 1 8828 499 9 1 6906 0752 000074 2 718

550 1 9178 527 3 1 7408 0766 000073 2 755

560 1 9529 555 1 7907 0780 000072 2 791

570 1 9880 583 1 1 8404 0794 000070 2 827

580 2 0230 611 5 1 8899 0808 000069 2 862

590 .0 2 0580 640 3 1 .9391 0822 000068 2 896

600 .0 2 0931 669 4 1 .9880 0836 000067 2 930
-70-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg K

V

in3/kg

LIQUID, P = 0.05 MPa

240.0 0.001606

246.56 0.001623

COEXISTING VAPOR (x=

246.56 0.6861

H

kJ/kg

-507.3

-493.4

= .0214)

-103.7

kJ/(kg.K)

-1.4962

-1.4390

0.0926

DP/DD

0.774

0.734

DP/DT

0.788

0.760

0.0335 0.000212

CP

kJ/(kg.K)

2.109

2. 140

1.444

VAPOR

COEXISTING LIQUID (x=.3458)

252.14 0.001586 -515.6 -1.4175 0.738 0.745 2.119

252 14 6885 -108 1 1123 0336 000207 1 467

260 7115 -96 5 1575 0348 000200 1 501

270 7405 -81 4 2146 0363 000192 1 545

280 7695 -65 7 2715 0378 000184 1 590

290 7983 -49 6 3281 0393 000177 1 635

300 8270 -33 3844 0408 000171 1 681

310 8557 -15 9 4403 0423 000165 1 727

320 8843 1 6 4958 0437 000160 1 773

330 9129 19 5 5512 0452 000155 1 820

340 9414 38 6062 0466 000150 1 867

350 9698 56 9 6610 0481 000145 1 913

360 9982 76 2 7155 0495 000141 1 959

370 1 0266 96 1 7699 0510 000137 2 006

380 1 0549 116 4 8240 0524 000133 2 052

390 1 0832 137 1 8779 0538 000130 2 097

400 1 1115 158 3 9315 0553 000126 2 142

410 1 1397 179 9 9850 0567 000123 2 187

420 1 1680 202 1 0382 0581 000120 2 231

430 1 1962 224 6 1 0912 0596 000117 2 275

440 1 2244 247 5 1 1440 0610 000115 2 318

450 1 2526 270 9 1 1966 0624 000112 2 361

460 1 2807 294 8 1 2490 0638 000110 2 403

470 1 3089 319 1 3011 0652 000107 2 445

480 1 3370 343 7 1 3530 0667 000105 2 486

490 1 3652 368 7 1 4046 0681 000103 2 526

500 1 3933 394 2 1 4561 0695 000101 2 566

510 1 4214 420 1 5072 0709 000099 2 605

520 1 4495 446 2 1 5582 0723 000097 2 644

530 1 4776 472 8 1 6088 0737 000095 2 682

540 1 5057 499 8 1 6593 0751 000093 2 719

550 1 5337 527 2 1 7095 0766 000091 2 756

560 1 5618 554 9 1 7594 0780 000090 2 792

570 1 5899 583 1 8091 0794 000088 2 827

580 1 6179 611 4 1 8586 0808 000087 2 862

590 1 6460 640 2 1 9078 0822 000085 2 897

600 1 6740 669 3 1 9568 0836 000084 2 930
-71-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg K

V

m3/kg

LIQUID, P = 0.06 MPa

H

kJ/kg

240.0 0.001605 -507.3

250.0 0.001633 -486.0

250.71 0.001635 -484.5

COEXISTING VAPOR (x=.0224)

250.71 0.5793 -98.3

kJ/Ckg.K)

-1.4962

-1.4094

-1.4033

0.0896

DP/DD

0.774

0.713

0.709

DP/DT CP

kJ/(kg.K)

0.789

0.745

0.742

0.0338 0.000252

2

2

2

109

155

158

1.466

VAPOR

COEXISTING LIQUID (x=.3358)

256.19 0.001599 -505.7 -1.3821 0.713 0.728 2. 140

256 19 5810 -102 6 1089 0339 0. 000246 1 488

260 5903 -97 1309 0345 0. 000242 1 505

270 6147 -81 8 1881 0360 0. 000232 1 548

280 6390 -66 1 2451 0376 000223 1 593

290 6632 -50 3018 0391 0. 000214 1 638

300 6873 -33 3 3581 0406 000206 1 683

310 7113 -16 3 4141 0421 0. 000199 1 729

320 7353 1 3 4698 0435 000192 1 775

330 7592 19 3 5251 0450 000186 1 822

340 7830 37 7 5802 0465 000180 1 868

350 8068 56 6 6351 0479 000175 1 914

360 8306 76 6896 0494 000170 1 961

370 8543 95 9 7440 0508 000165 2 007

380 8780 116 1 7981 0523 000160 2 053

390 9016 136 9 8520 0537 000156 2 098

400 9252 158 1 9057 0552 000152 2 143

410 9488 179 8 9592 0566 000148 2 188

420 9724 201 9 1 0125 0580 000145 2 232

430 9960 224 4 1 0655 0595 000141 2 276

440 1 0195 247 4 1 1183 0609 000138 2 319

450 1 0431 270 8 1 1709 0623 000135 2 362

460 1 0666 294 6 1 2233 0637 000132 2 404

470 1 0901 318 9 1 2754 0652 000129 2 445

480 1 1135 343 5 1 3273 0666 000126 2 486

490 1 1370 368 6 1 3790 0680 000123 2 527

500 1 1605 394 1 4304 0694 000121 2 566

510 1 1839 419 9 1 4816 0708 000119 2 605

520 1 2074 446 1 1 5325 0723 000116 2 644

530 1 2308 472 7 1 5832 0737 000114 2 682

540 1 2542 499 7 1 6337 0751 000112 2 719

550 1 2777 527 1 1 6839 0765 000110 2 756

560 1 3011 554 8 1 7338 0779 000108 2 792

570 1 3245 582 9 1 7835 0793 000106 2 828

580 .0 1 3479 611 3 1 8330 0807 000104 2 862

590 1 3713 640 1 1 8822 .0821 000102 2 897

600 .0 1 3947 669 .2 1 9312 0836 000100 2 931
-72-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg K

V

mS/kg

LIQUID, P = 0.08 MPa

H

kJ/kg

240.0 0.001605 -507.3

250.0 0.001632 -486.0

257.59 0.001654 -469.5

COEXISTING VAPOR (x=.0240)

257.59 0.4433 -89.3

S DP/DD

kJ/(kg.K)

-1.4963

-1.4095

-1.3448

0.0863

0.775

0.714

0.666

DP/DT

0.789

0.746

0.712

0.0343 0.000331

CP

kJ/(kg.K)

2.109

2.155

2.188

1.503

VAPOR

COEXISTING LIQUID (x=.3201)

262.90 0.001620 -489.2 -1.3241 0.671 0.700 2.173

262 90 4442 -93 5 1050 0343 000325 1 525

270 4574 -82 6 1458 0355 000314 1 555

280 4760 -66 9 2031 0370 000301 1 599

290 4944 -50 7 2600 0386 000289 1 643

300 5127 -34 3165 0401 000278 1 688

310 5309 -16 9 3726 0416 000268 1 733

320 5490 7 4283 0431 000259 1 779

330 5671 18 7 4838 0446 000250 1 825

340 5851 37 2 5390 0461 000242 1 871

350 6031 56 1 5939 0476 000235 1 917

360 6210 75 5 6486 0491 000228 1 963

370 6389 95 4 7030 0506 000221 2 009

380 6568 115 7 7572 0520 000215 2 055

390 6746 136 5 8112 0535 000209 2 100

400 6924 157 7 8649 0549 000204 2 145

410 7102 179 4 9184 0564 000199 2 190

420 7280 201 5 9717 0578 000194 2 234

430 7457 224 1 1 0248 0593 000189 2 277

440 7635 247 1 1 0776 0607 000184 2 320

450 7812 270 5 1 1303 0621 000180 2 363

460 7988 294 3 1 1826 0636 000176 2 405

470 8165 318 6 1 2348 0650 000172 2 446

480 8342 343 3 1 2867 0664 000169 2 487

490 8518 368 3 1 3384 0679 000165 2 528

500 8695 393 8 1 3899 0693 000162 2 567

510 887 419 7 1 4411 0707 000158 2 606

520 905 445 9 1 4920 0721 000155 2 645

530 922 472 5 1 5427 0736 000152 2 683

540 940 499 5 1 5932 0750 000149 2 720

550 958 526 9 1 6434 0764 000147 2 757

560 975 554 6 1 6934 0778 000144 2 793

570 993 582 7 1 7431 0792 000141 2 828

580 1 010 611 1 1 7926 0806 000139 2 863

590 1 028 639 9 1 8418 0821 000137 2 897

600 1 046 669 1 1 8908 0835 000134 2 931
-73-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0. 10 MPa

T

Deg K

V

mS/kg

H

kJ/kg

S DP/DD

kJ/(kg.K)

DP/DT CP

kJ/(kg.K)

240.0 0.001605 -507.2

250.0 0.001632 -486.0

260.0 0.001661 -464.2

263.23 0.001671 -457.1

COEXISTING VAPOR (x=.0253)

263.23 0.3601 -81.9

4963

4095

3245

2973

0.775

0.714

0.652

0.632

0.790

0.746

0.701

0.687

0.0850 0.0346 0.000410

109

155

199

213

1.535

COEXISTING LIQUID (x=.3081)

268.41 0.001638 -475.6

VAPOR

-1.2771 0.637 0.676 2.199

268.41

270.0

280.0

290.0

300.0

0.3606

0.3630

0.3781

0.3930

0.4078

-86.0

-83.5

-67.7

-51.4

-34.7

0.1032

0. 1124

0.1699

0.2271

0.2837

. 0346

0.0349

0.0365

0.0381

0.0397

0.000403

0.000400

0.000382

0.000366

0.000352

1.557

1.563

1.605

1.649

1.693

310.0

320.0

330.0

340.0

350.0

360.0

370.0

380.0

390.0

400.0

0.4226

0.4372

0.4518

0.4664

0.4809

0.4953

0.5097

0.5241

0.5384

0.5528

-17.5

0.1

18.1

36.7

55.6

75.1

95.0

115.3

136.1

157.3

0.3400

0.3959

0.4515

0.5068

0.5618

0.6165

0.6710

0.7253

0.7793

0.8331

0.0412

0.0427

0.0443

0.0458

0.0473

0.0488

0.0503

0.0517

0.0532

0.0547

0.000339

0.000327

0.000315

0.000305

0.000296

0.000287

0.000278

0.000270

0.000263

0.000256

1,

1,

1,

1,

1

12

2

2

2

738

783

828

874

920

966

Oil

057

102

147

410.0

420.0

430.0

440.0

450.0

460.0

470.0

480.0

490.0

500.0

0.5671

0.5813

0.5956

0.6098

0.6240

0.6382

0.6524

0.6666

0.6807

0.6949

179.0

201.2

223.7

246.8

270.2

294.0

318.3

343.0

368.1

393.5

0.8866

0.9400

0.9931

0460

0986

1510

2032

2552

3069

3583

0.0561

0.0576

0.0591

0.0605

0.0620

0.0634

0.0648

0.0663

0.0677

0.0691

0.000249

0.000243

0.000237

0.000231

0.000226

0.000221

0.000216

0.000211

0.000207

0.000203

191

235

279

322

364

406

448

488

529

568

510.0

520.0

530.0

540.0

550.0

560.0

570.0

580.0

590.0

600.0

0.709

0.723

0.737

0.751

0.766

0.780

0.794

0.808

0.822

0.836

419.4

445.7

472

499

526

554

582

610

639

668

1.4096

1.4605

1.5113

5617

6120

6619

7117

7612

8104

8594

0.0706

0.0720

0.0734

0.0749

0.0763

0.0777

0.0791

0.0806

0.0820

0.0834

0.000198

0.000195

0.000191

0.000187

0.000184

0.000180

0.000177

0.000174

0.000171

0.000168

607

646

683

721

757

793

829

864

898

932
-74-

Table A2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0. 15 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 0.001605 -507.2 -1 4964 0.777 0.791 2 109

250 0.001632 -485.9 -1 4097 0.716 0.747 2 155

260 0.001661 -464.2 -1 3246 0.653 0.702 2 198

270 0.001692 -442 . -1 2411 0.591 0.657 2 244

274 24 0.001705 -432.5 -1 2061 0.565 0.638 2 264

COEXISTING VAPOR ( x=.0281)

274 24 . 2464 -67.3 0856 0.0349 000609 1 601

VAPOR

COEX][STING LIQUID (x=.2864)

279 14 0.001675 -448 .

6

-1 1863 0.570 0.630 2 253

279 14 0.2464 -71.2 1031 0.0349 000599 1 622

280 0.2473 -69.8 1081 0.0350 000597 1 625

290 0.2577 -53.4 1658 0.0368 000569 1 665

300 0.2679 -36.5 2230 0.0385 000544 1 707

310 0.2781 -19.2 2797 0.0401 000522 1 750

320 0.2881 -1.5 3360 0.0417 000502 1 793

330 0.2981 16.7 3919 0.0433 000483 1 838

340 0.3080 35.3 4475 0.0449 000467 1 882

350 0.3178 54.4 5027 0.0465 000451 1 927

360 0.3276 73.9 5577 0.0480 000437 1 972

370 0.3374 93.8 6123 0.0495 000423 2 017

380 0.3471 114.2 6667 0.0511 000411 2 062

390 0.3568 135. 1 7209 0.0526 000399 2 107

400 0.3665 156.4 7748 0.0541 000388 2 151

410 0.3761 178. 1 8285 0.0556 000378 2 195

420 0.3858 200.3 8819 0.0571 000368 2 239

430 0.3954 222.9 9351 0.0586 000359 2 282

440 0.4049 246.0 9881 0.0600 000350 2 325

450 0.4145 269.4 1 0408 0.0615 000342 2 367

460 0.4240 293.3 1 0933 0.0630 000334 2 409

470 0.4336 317.6 1 1455 0.0644 000326 2 450

480 0.4431 342.3 1 .1975 0.0659 000319 2 491

490 0.4526 367.4 1 2493 0.0673 000312 2 531

500 0.4621 392.9 1 3008 0.0688 000306 2 571

510 0.4716 418.8 1 3521 0.0702 000300 2 609

520 0.4811 445. 1 1 4031 0.0717 000293 2 648

530 0.4905 471.7 1 4539 0.0731 000288 2 685

540 0.5000 498.8 1 5044 0.0746 000282 2 723

550 0.5095 526. 1 1 5546 0.0760 000277 2 759

560 0.5189 553.9 1 6046 0.0775 000272 2 795

570 0.5283 582.0 1 6544 0.0789 000267 2 830

580 0.5378 610.5 1 7039 0.0803 000262 2 865

590 0.5472 639.3 1 7532 0.0818 000257 2 899

600 0.5566 668.4 1 8022 0.0832 000253 2 933
-75-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.20 MPa

T V H S DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240.0 0.001605 -507.2 -1.4966 0.778 0.792 2.108

250.0 0.001632 -485.9 -1.4098 0.717 0.748 2.155

260.0 0.001661 -464.2 -1.3248 0.654 0.703 2.198

270.0 0.001691 -442.0 -1.2413 0.592 0.658 2.243

280.0 0.001725 -419.3 -1. 1588 0.530 0.612 2.293

282.69 0.001734 -413.

-1. 1368 0.514 0.600 2.308

COEXISTING VAPOR (x=.0302)

282.69 0. 1879 -56.1 0.0886 0.0350 0.000810 1.656

COEXISTING LIQUID (x=.2711)

287.39 0.001706 -427.6

VAPOR

1. 1173 0.519 0.594 2.297

287 39 1878 -59 8 1055 0349 000798 1 676

290 1899 -55 4 1207 0354 000787 1 685

300 1979 -38 4 1785 0372 000749 1 723

310 2057 -20 9 2357 0390 000716 1 764

320 2135 -3 2924 0407 000686 1 805

330 2212 15 2 3487 0424 000659 1 848

340 2288 34 4045 0440 000635 1 891

350 2363 53 1 4600 0456 000613 1 935

360 2438 72 7 5152 0472 000592 1 979

370 2512 92 7 5700 0488 000573 2 024

380 2586 113 2 6246 0504 000556 2 068

390 2660 134 1 6789 0519 000539 2 112

400 2734 155 4 7329 0535 000524 2 156

410 2807 177 2 7867 0550 000509 2 200

420 2880 199 4 8403 0565 000496 2 243

430 2952 222 1 8936 0580 000483 2 286

440 3025 245 2 9466 0595 000471 2 329

450 3097 268 7 9994 0610 000460 2 371

460 3170 292 6 1 0520 0625 000449 2 412

470 3242 316 9 1 1043 0640 000438 2 453

480 3313 341 6 1 1563 0655 000429 2 494

490 3385 366 8 1 2082 0670 000419 2 534

500 3457 392 3 1 2597 0684 000410 2 573

510 3529 418 2 1 3110 0699 000402 2 612

520 3600 444 5 1 3621 0714 000394 2 650

530 3672 471 2 1 4129 0728 000386 2 687

540 3743 498 .2 1 4634 0743 000378 2 724

550 3814 525 .6 1 5137 0757 000371 2 761

560 3885 553 .4 1 .5638 .0772 000364 2 797

570 3957 581 .5 1 6136 0787 000357 2 .832

580 .0 4028 610 .0 1 .6631 .0801 000351 2 .867

590 .0 4099 638 .8 1 .7124 .0815 000345 2 .901

600 .0 4170 668 .0 1 .7614 0830 000339 2 .935
-76-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.25 MPa

T V H S DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240.0 0.001605 -507.1 -1.4967 0.780 0.793 2.108

250.0 0.001632 -485.8 -1.4099 0.718 0.749 2.155

260.0 0.001661 -464.1 -1.3249 0.656 0.704 2.198

270.0 0.001691 -442.0 -1.2414 0.593 0.659 2.243

280.0 0.001724 -419.3 -1.1590 0.532 0.613 2.293

289.66 0.001759 -396.8 -1.0803 0.474 0.569 2.346

COEXISTING VAPOR (x=.0321)

289.66 0.1521 -46.9 0.0923 0.0349 0.001015 1.704

VAPOR

COEXISTING LIQUID (x=.2594)

294.19 0.001732 -410.0 -1.0612 0.479 0.564 2.336

294 19 0. 1519 -50 4 0. 1087 0. 0348 0. 001001 1 723

300 0. 1558 -40 3 0. 1427 0. 0359 0. 000970 1 743

310 0. 1623 -22 7 2005 0378 0. 000922 1 780

320 0. 1687 -4 7 2577 0396 000880 1 819

330 0. 1750 13 7 3143 0414 000843 1 859

340 0. 1812 32 5 3705 0431 000810 1 901

350 0. 1873 51 8 4262 0448 000780 1 944

360 0. 1935 71 5 4816 0465 000753 1 987

370 1995 91 5 5367 0481 000728 2 031

380 2055 112 1 5915 0497 000704 2 074

390 2115 133 6459 0513 000683 2 118

400 2175 154 4 7001 0529 000663 2 161

410 2234 176 3 7540 0544 000644 2 204

420 2293 198 6 8076 0560 000626 2 247

430 2352 221 2 8610 0575 000610 2 290

440 2410 244 4 9142 0591 000594 2 332

450 2469 267 9 9670 0606 000579 2 374

460 2527 291 8 1 0197 0621 000565 2 415

470 2585 316 2 1 0720 0636 000552 2 456

480 2643 341 1 1242 0651 000540 2 496

490 2701 366 1 1 1760 0666 000528 2 536

500 2759 391 7 1 2277 0681 000516 2 575

510 2816 417 6 1 2790 0696 000505 2 614

520 2874 443 9 1 3301 0711 000495 2 652

530 2931 470 6 1 3810 0725 000485 2 689

540 2989 497 7 1 4315 0740 000475 2 726

550 3046 525 1 1 4819 0755 000466 2 763

560 3103 552 9 1 5319 0769 000457 2 798

570 3160 581 1 5818 0784 000449 2 834

580 3218 609 5 1 6313 0799 000441 2 868

590 3275 638 4 1 6806 0813 000433 2 902

600 3332 667 6 1 7297 0828 000425 2 936
-77-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.30 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240.0 0.001605 -507.1 -1.4968 0.781 0.794 2.108

250.0 0.001632 -485.8 -1.4101 0.720 0.750 2.154

260.0 0.001660 -464.

-1.3251 0.657 0.705 2.198

270.0 0.001691 -441.9 -1.2416 0.594 0.660 2.243

280.0 0.001724 -419.2 -1. 1592 0.533 0.614 2.293

290.0 0.001760 -396.0 -1.0777 0.473 0.569 2.348

295.64 0.001781 -382.6 -1.0321 0.440 0.543 2.382

COEXISTING VAPOR (x=.0337)

295.64 0.1278 -39.0 0.0964 0.0347 0.001224 1.747

VAPOR

COEXISTING LIQUID (x=.2500)

300.02 0.001755 -394.8 -1.0134 0.445 0.539 2.372

300 02 0. 1276 -42 4 1123 0. 0346 0. 001209 1. 766

310 1332 -24 6 1707 0. 0366 0. 001143 1. 798

320 0. 1387 -6 4 2285 0. 0385 0. 001086 1 834

330 0. 1441 12 2 2855 0. 0404 0. 001037 1. 872

340 1494 31 1 3421 0. 0422 0. 000993 1 912

350 0. 1547 50 4 3981 0. 0439 0. 000954 1 953

360 1599 70 2 4538 0. 0457 0. 000919 1 995

370 1650 90 4 5090 0. 0473 0. 000887 2 038

380 1701 111 5640 0490 000858 2 081

390 0. 1752 132 6186 0506 000830 2 123

400 1802 153 5 6729 0523 000805 2 166

410 1852 175 4 7270 0539 000781 2 209

420 1902 197 7 7807 0555 000759 2 252

430 1951 220 4 8342 0570 000739 2 294

440 2000 243 6 8874 0586 000720 2 336

450 2050 267 1 9404 0601 000701 2 377

460 2099 291 1 9931 0617 000684 2 418

470 2147 315 5 1 0455 0632 000668 2 459

480 2196 340 3 1 0977 0647 000652 2 499

490 2245 365 5 1 1496 0662 000637 2 539

500 2293 391 1 2013 0677 000623 2 578

510 2341 417 1 2527 0693 000610 2 616

520 2390 443 3 1 3038 0707 000597 2 654

530 2438 470 1 3547 0722 000585 2 691

540 2486 497 1 1 4053 0737 000573 2 728

550 2534 524 6 1 4557 0752 000562 2 764

560 2582 552 4 1 5058 0767 000551 2 800

570 2630 580 5 1 5557 0782 000541 2 835

580 2677 609 . 1 1 6052 0796 000531 2 870

590 2725 637 9 1 .6546 0811 000521 2 904

600 2773 667 . 1 1 .7037 0826 000512 2 937
-78-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.4Q MPa

T V H S DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg. K) kJ/(kg.K)

240.0 0.001604 -507.0 -1.4971 0.784 0.796 2.108

250.0 0.001631 -485.7 -1.4104 0.722 0.752 2.154

260.0 0.001660 -464.0 -1 .3254 0.660 0.707 2.197

270.0 0.001690 -441.8 -1.2419 0.597 0.661 2.242

280.0 0.001723 -419.2 -1. 1595 0.535 0.616 2.292

290.0 0.001759 -395.9 -1.0781 0.475 0.570 2.347

300.0 0.001798 -372.1 -0.9974 0.417 0.525 2.408

305.64 0.001822 -358.4 -0.9522 0.385 0.500 2.446

COEXISTING VAPOR (x=.0365)

305 . 64 0.0969 -25.9 0.1046 0.0341 0.001656 1.825

VAPOR

COEXISTING LIQUID (x=.2352)

309.77 0.001797 -369.0 -0.9342 0.390 0.497 2.436

309 77 0966 -29 1 1198 0339 001638 843

310 0. 0967 -28 6 1211 0340 001635 844

320 1012 -10 1802 0362 001538 870

330 1055 8 9 2383 0383 001456 902

340 0. 1097 28 1 2956 0403 001386 937

350 1138 47 7 3523 0422 001325 974

360 1179 67 6 4086 0440 001270 2 013

370 1219 88 4643 0458 001222 2 053

380 1258 108 7 5196 0476 001177 2 094

390 1297 129 9 5746 0493 001137 2 136

400 1336 151 4 6292 0510 001100 2 177

410 1374 173 5 6835 0527 001066 2 219

420 1413 195 9 7375 0544 001034 2 261

430 1450 218 7 7912 0560 001005 2 302

440 1488 241 9 8446 0576 000977 2 343

450 1526 265 6 8977 0592 000951 2 384

460 1563 289 6 9506 0608 000927 2 425

470 1600 314 1 0032 0624 000904 2 465

480 1637 338 9 0555 0639 000882 2 505

490 1674 364 2 1075 0655 000861 2 544

500 1711 389 8 1593 0671 000842 2 583

510 1748 415 8 2108 0686 000823 2 621

520 1784 442 2 2620 0701 000805 2 658

530 1821 468 9 3130 0716 000789 2 696

540 1857 496 3637 0732 000772 2 732

550 1894 523 5 4141 0747 000757 2 768

560 1930 551 4 4643 0762 000742 2 804

570 1966 579 6 5142 0777 000728 2 839

580 2002 608 1 5638 0792 000714 2 873

590 2039 637 6132 0807 000701 2 907

600 2075 666 2 6623 0822 000688 2 940
-79-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.50 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240.0 0.001604 -506.9 -1.4974 0.787 0.798 2.107

250.0 0.001631 -485.6 -1.4106 0.725 0.754 2.153

260.0 0.001659 -463.9 -1.3257 0.662 0.709 2.197

270.0 0.001690 -441.8 -1.2422 0.599 0.663 2.242

280.0 0.001723 -419.

-1. 1598 0.538 0.617 2.291

290.0 0.001758 -395.8 -1.0784 0.478 0.572 2.346

300.0 0.001797 -372.0 -0.9978 0.420 0.527 2.407

310.0 0.001840 -347.6 -0.9177 0.364 0.483 2.475

313.91 0.001858 -337.8 -0.8865 0.342 0.466 2.504

COEXISTING VAPOR ( x=.0389)

313.91 0.0779 -15. 1 0. 1124

VAPOR

0.0334 002108 1.897

COEXISTING LIQUID (x=.2239)

317.84 0.001835 -347.3 -0.8692 0.347 0.463 2.494

317.84 0.0776 -18.1 0. 1270 0.0332 002087 1.913

320.0 0.0785 -14.0 0.1399 0.0337 002055 1.917

330.0 0.0822 5.3 0.1993 0.0361 001926 1.938

340.0 0.0857 24.9 0.2577 0.0383 001819 1.966

350.0 0.0892 44.7 0.3152 . 0404 001728 1.999

360.0 0.0926 64.9 0.3721 0.0424 001649 2.034

370.0 0.0959 85.5 0.4284 0.0443 001579 2.071

380.0 0.0992 106.4 0.4842 0.0462 001517 2.110

390.0 0. 1024 127.7 0.5395 0.0480 001461 2.149

400.0 0. 1056 149.4 0.5944 0.0498 001410 2.189

410.0 0. 1088 171.5 0.6491 0.0515 001364 2.230

420.0 0. 1119 194.0 0.7033 0.0533 001321 2.270

430.0 0. 1150 216.9 0.7572 0.0550 001281 2.311

440.0 0. 1181 240.3 0.8108 0.0566 001244 2.351

450.0 0. 1211 264.0 0.8641 0.0583 001210 2.392

460.0 0. 1242. 288. 1 0.9171 0.0599 001177 2.432

470.0 0. 1272' 312.6 0.9698 0.0616 001147 2.471

480.0 0. 1302 337.5 1.0222 0.0632 001118 2.510

490.0 0. 1332 362.8 1 . 0744 0.0648 001091 2.549

500.0 0. 1362 388.5 1. 1263 0.0664 001066 2.588

510.0 0. 1391 414.6 1. 1779 0.0679 .001042 2.625

520.0 0.1421 441.0 1.2292 0.0695 .001018 2.663

530.0 0. 1451 467.8 1.2802 0.0711 .000997 2.700

540.0 0. 1480 494.9 1.3310 0.0726 .000976 2.736

550.0 0. 1509 522.5 1.3815 0.0741 .000956 2.772

560.0 0. 1539 550.4 1.4317 0.0757 .000936 2.807

570.0 0. 1568 578.6 1.4817 0.0772 .000918 2.842

580.0 0. 1597 607.2 1.5314 0.0787 .000900 2.876

590.0 0. 1626 636. 1 1.5809 0.0803 .000884 2.910

600.0 0. 1656 665.3 1.6300 0.0818 .000867 2.943
-80-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.60 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 0.001604 -506.8 -1.4976 0.790 0.800 2.107

250 0.001631 -485.5 -1.4109 0.728 0.756 2.153

260 0.001659 -463.8 -1.3260 0.665 0.710 2.196

270 0.001690 -441.7 -1.2425 0.602 0.665 2.241

280 0.001722 -419.0 -1. 1602 0.540 0.619 2.290

290 0.001758 -395.8 -1.0788 0.480 0.574 2.345

300 0.001796 -372.0 -0.9982 0.422 0.529 2.406

310 0.001839 -347.5 -0.9182 0.366 0.484 2.474

320 0.001886 -322.4 -0.8384 0.312 0.441 2.550

321 03 0.001892 -319.7 -0.8302 0.307 0.436 2.558

OEX][STING VAPOR (x=.0410)

321 03 0.0650 -6.0 0.1197 0.0325 0.002580 1.963

VAPOR

COEXISTING LIQUID (x=.2148)

324.79 0.001870 -328.3 -0.8135 0.311 0.434 2.549

324 79 0648 -8. 9 1337 0324 002557 1 979

330 0665 1. 5 1654 0337 002460 1 984

340 0697 21. 5 2249 0362 002301 2 002

350 0727 41. 6 2834 0385 002170 2 027

360 0757 62 1 3410 0406 002059 2 058

370 0786 82 9 3979 0427 001963 2 091

380 0814 104 4542 0447 001879 2 127

390 0842 125 4 5100 0466 001804 2 164

400 0869 147 3 5653 0485 001737 2 202

410 0896 169 5 6201 0503 001676 2 241

420 0923 192 1 6746 0521 001620 2 281

430 0949 215 2 7288 0539 001569 2 320

440 0975 238 6 7826 0556 001521 2 360

450 1001 262 4 8361 0574 001477 2 399

460 1027 286 6 8892 0591 001436 2 439

470 1053 311 2 9421 0607 001398 2 478

480 1078 336 1 9947 0624 001362 2 516

490 1103 361 5 1 0469 0640 001328 2 555

500 1129 387 2 1 0989 0656 001296 2 593

510 1154 413 3 1 1506 0673 001265 2 630

520 1179 439 8 1 2021 0689 001236 2 667

530 1204 466 6 1 2532 0705 001209 2 704

540 1229 493 9 1 3040 0720 001183 2 740

550 1253 521 4 1 3546 0736 001158 2 776

560 1278 549 3 1 4049 0752 001134 2 811

570 1303 577 6 1 4549 0767 001112 2 .845

580 1327 606 2 1 5047 0783 001090 2 .879

590 1352 635 2 1 5542 0798 001069 2 .913

600 1376 664 4 1 .6034 0814 001049 2 946
-81-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.70 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 0.001603 -506.7 -1.4979 0.792 0.802 2.107

250 0.001630 -485.4 -1.4112 0.730 0.758 2.153

260 0.001659 -463.7 -1.3262 0.667 0.712 2.196

270 0.001689 -441.6 -1.2429 0.604 0.666 2.240

280 0.001722 -418.9 -1.1605 0.543 0.621 2.289

290 0.001757 -395.7 -1.0792 0.482 0.575 2.344

300 0.001796 -371.9 -0.9986 0.424 0.530 2.405

310 0.001838 -347.5 -0.9186 0.368 0.486 2.472

320 0.001885 -322.3 -0.8389 0.315 0.442 2.548

327 31 0.001924 -303.5 -0.7805 0.277 0.411 2.610

OEX]CSTING VAPOR (x=.0430)

327 31 0.0557 1.9 0.1266 0.0317 0.003074 2.027

VAPOR

COEXISTING LIQUID (x=.2072)

330.92 0.001903 -311.2 -0.7645 0.281 0.409 2.600

330 92 0555 -0 8 1400 0315 003049 2 042

340. 0581 17 8 1955 0340 002842 2 046

350. 0609 38 4 2551 0365 002658 2 062

360 0636 59 1 3136 0388 002505 2 085

370 0662 80 2 3711 0411 002376 2 114

380 0687 101 5 4280 0432 002265 2 146

390 0711 123 1 4842 0452 002168 2 180

400 0736 145 1 5399 0472 002081 2 216

410 0759 167 5 5951 0491 002003 2 254

420 0783 190 2 6499 0510 001932 2 292

430 0806 213 4 7043 0529 001868 2 330

440 0829 236 9 7583 0547 001809 2 369

450 0851 260 8 8120 0564 001754 2 407

460 0874 285 8653 0582 001703 2 446

470 0896 309 7 9183 0599 001656 2 484

480 0918 334 7 9710 0616 001612 2 523

490 0940 360 1 1 0234 0633 001570 2 561

500 0962 385 9 1 0755 0649 001531 2 598

510 0984 412 1 1 1273 0666 001494 2 635

520 1006 438 6 1 1788 0682 001459 2 672

530 1028 465 5 1 2301 0699 001426 2 708

540 1049 492 8 1 2810 0715 001394 2 744

550 1070 520 4 1 3316 0731 001365 2 779

560 1092 548 3 1 3820 0747 001336 2 814

570 1113 576 6 1 4321 0763 001309 2 849

580 1134 605 .3 1 4819 0778 001283 2 883

590 1156 634 .2 1 .5315 0794 001258 2 916

600 1177 663 .6 1 .5807 0810 001234 2 949
-82-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.80 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 0.001603 -506.6 -1.4981 0.795 0.804 2.106

250 0.001630 -485.3 -1.4115 0.733 0.760 2.152

260 0.001658 -463.6 -1.3265 0.670 0.714 2.195

270 0.001689 -441.5 -1.2432 0.607 0.668 2.240

280 0.001721 -418.8 -1.1609 0.545 0.622 2.289

290 0.001756 -395.6 -1.0795 0.485 0.577 2.343

300 0.001795 -371.9 -0.9990 0.426 0.532 2.404

310 0.001837 -347.4 -0.9191 0.371 0.487 2.471

320 0.001884 -322.3 -0.8394 0.317 0.444 2.546

330 0.001937 -296.4 -0.7596 0.266 0.401 2.632

332 97 0.001954 -288.5 -0.7359 0.251 0.388 2.660

OEX][STING VAPOR (x=.0447)

332 97 0.04861 8.9 0.1329 0.0307 0.00359 2.089

VAPOR

COEXISTING LIQUID (x=.2007)

336.44 0.001934 -295.7 -0.7205 0.255 0.387 2.649

336 44 04838 6 3 1459 0305 00356 2 103

340 04940 13 9 1681 0316 00346 2 100

350 05201 34 9 2291 0344 00320 2 102

360 05448 56 2886 0370 00299 2 117

370 05685 77 4 3470 0394 00282 2 139

380 05913 98 9 4045 0417 00268 2 167

390 06136 120 8 4612 0438 00255 2 198

400 06353 142 9 5173 0459 00244 2 232

410 06568 165 4 5729 0479 002346 2 267

420 06778 188 3 6280 0499 002259 2 303

430 06985 211 5 6826 0518 002180 2 340

440 07189 235 1 7369 0537 002107 2 378

450 07391 259 1 7907 0555 002041 2 416

460 07591 283 5 8442 0573 001979 2 453

470 07790 308 2 8974 0591 001922 2 491

480 07987 333 3 9503 0608 001869 2 529

490 08182 358 8 1 0028 0625 001819 2 566

500 08376 384 6 1 0550 0642 001773 2 604

510 0857 410 8 1 1069 0659 001729 2 640

520 0876 437 4 1 1585 0676 001687 2 677

530 0895 464 3 1 2098 0693 001648 2 713

540 0914 491 6 1 2608 0709 001611 2 748

550 0933 519 3 1 3115 0725 001575 2 783

560 0952 547 3 1 3620 0742 001541 2 818

570 0971 575 6 1 4121 0758 001509 2 852

580 0990 604 3 1 4620 0774 001479 2 886

590 1008 633 3 1 5116 0790 001449 2 919

600 1027 662 7 1 5610 0806 001421 2 952
-83-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 0.90 MPa

T

Deg K

240.0

250.0

260.0

270.0

280.0

290.0

300.0

V

in3/kg

0.001603

0.001629

0.001658

0.001688

0.001721

0.001756

0.001794

H

kJ/kg

-506

-485

-463

-441

-418.8

-395.6

-371.8

kJ/(kg.K)

4984

4117

3268

2435

1612

0799

-0.9994

DP/DD

0.798

0.736

0.672

0.609

0.547

0.487

0.429

DP/DT

0.806

0.761

0.716

0.670

0.624

0.578

0.533

CP

kJ/(kg.K)

106

152

195

239

288

342

2.402

310.0 0.001836 -347.4 -0.9195

320.0 0.001883 -322.3 -0.8399

330.0 0.001936 -296.4 -0.7602

338.12 0.001984 -274.7 -0.6953

COEXISTING VAPOR (x=.0464)

338.12 0.04305 15.2 0.1387

0.373

0.319

0.268

0.228

0.489

0.445

0.402

0.368

0.0298 0.00413

2

2

2

2

469

544

629

708

2.150

COEXISTING LIQUID (x=.1950)

341.47 0.001965 -281.3

VAPOR

-0.6803 0.232 0.367 2.697

341.47

350.0

360.0

370.0

380.0

390.0

400.0

0.04286

0.04498

0.04731

0.04953

0.05165

0.05371

0.05571

12.7

31.2

52.8

74.4

96.2

118.3

140.7

0. 1513

0.2047

0.2654

0.3247

0.3829

0.4402

0.4968

0.0296

0.0322

0.0351

0.0377

0.0401

0.0424

. 0446

0.00410

0.00380

0.00353

0.00331

0.00312

0.00296

0.00283

2

2

2

2

2

2

2

164

151

154

169

191

218

248

410.0

420.0

430.0

440.0

450.0

460.0

470.0

480.0

490.0

500.0

0.05766

0.05958

0.06146

0.06332

0.06515

0.06696

0.06876

0.07054

0.07230

0.07405

163

186

209

233

257

281

306

331

357

383

3

3

7

4

5

9

7

9

4

3

0.5527

0.6081

0.6631

0.7175

0.7716

0.8253

0.8787

0.9316

0.9843

1.0366

. 0467

0.0487

0.0507

0.0527

0.0546

0.0564

0.0582

0.0600

0.0618

0.0635

0.00271

0.00260

0.00250

0.00242

0.00234

0.00226

0.00220

0.00213

0.00208

0.00202

2

2

2

2

2

2

2

2

2

2

281

316

351

388

424

461

498

536

572

609

510.0

520.0

530.0

540.0

550.0

560.0

570.0

580.0

590.0

600.0

0.0758

0.0775

0.0792

0.0809

0.0826

0.0843

0.0860

0.0877

0.0894

0.0911

409.6

436.2

463

490

518

546

574

603

632

661.8

0886

1403

1917

2428

2936

3441

3944

4443

4940

5434

0.0653

0.0670

0.0687

0.0703

0.0720

0.0737

0.0753

0.0769

0.0785

0.0802

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

1969

1920

1874

1831

1790

1751

1713

1678

1644

1611

645

682

717

752

787

822

856

889

922

955
-84-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=l. MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001602 -506.4 -1.4987 0.801 0.808 2.106

250.0 0.001629 -485.

1

-1.4120 0.738 0.763 2.151

260.0 0.001657 -463.4 -1.3271 0.675 0.717 2.194

270.0 0.001688 -441.3 -1.2438 0.612 0.671 2.239

280.0 0.001720 -418.7 -1.1615 0.550 0.625 2.287

290.0 0.001755 -395.5 -1.0803 0.489 0.580 2.341

300.0 0.001793 -371.7 -0.9998 0.431 0.535 2.401

310.0 0.001835 -347.4 -0.9199 0.375 0.491 2.468

320.0 0.001882 -322.3 -0.8403 0.322 0.447 2.542

330.0 0.001934 -296.4 -0.7608 0.271 0.404 2.627

340.0 0.001995 -269.6 -0.6808 0.222 0.361 2.725

342.87 0.002014 -261.7 -0.6577 0.208 0.349 2.757

COEXISTING VAPOR (:x=.0480)

342.87 0.03855 20.9 0.1441 0.0288 0.00469 2.212

VAPOR

COEXISTING LIQUID (x=.1899)

346.11 0.001995 -267.8 -0.6433 0.211 0.348 2.745

346. 11 0.03837 18.5 0.1563 0.0286 0.00466 2.225

350.0 0.03930 27.2 0.1812 0.0299 0.00449 2.212

360.0 0.04154 49.3 0.2434 0.0331 0.00412 2.198

370.0 0.04365 71.3 0.3038 0.0359 0.00383 2.202

380.0 0.04565 93.5 0.3628 0.0385 0.00360 2.217

390.0 0.04758 115.8 0.4207 0.0409 0.00340 2.240

400.0 0.04944 138.3 0.4778 0.0432 0.00323 2.266

410.0 0.05125 161.2 0.5342 0.0455 0.00309 2.297

420.0 0.05302 184.3 0.5900 0.0476 0.00296 2.329

430.0 0.05476 207.8 0.6452 0.0497 0.00284 2.363

440.0 0.05647 231.6 0.6999 0.0517 0.00274 2.398

450.0 0.05815 255.8 0.7542 0.0536 0.00264 2.433

460.0 0.05981 280.3 0.8081 0.0555 0.00256 2.470

470.0 0.06145 305.2 0.8616 0.0574 0.00248 2.506

480.0 0.06307 330.4 0.9148 0.0592 0.00241 2.542

490.0 0.06468 356.0 0.9675 0.0611 0.00234 2.579

500.0 0.06628 382.0 1.0200 0.0628 0.00227 2.615

510.0 0.06787 408.3 1.0721 0.0646 0.00221 2.651

520.0 0.06944 435.0 1. 1239 0.0663 0.00216 2.686

530.0 0.07101 462.0 1.1754 0.0681 0.00211 2.722

540.0 0.07256 489.4 1.2266 0.0698 0.00206 2.757

550.0 0.07411 517. 1 1.2774 0.0715 0.00201 2.791

560.0 0.07565 545.2 1.3280 0.0732 0.00196 2.826

570.0 0.07718 573.6 1.3783 0.0748 0.00192 2.859

580.0 0.07871 602.4 1.4283 0.0765 0.00188 2.893

590.0 0.08024 631.5 1.4780 0.0781 0.00184 2.925

600.0 0.08175 660.9 1.5275 0.0798 0.00180 2.958
-85-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=1.2 MPa

T

Deg K

240.0

250.0

260.0

270.0

280.0

290.0

300.0

V

mS/kg

0.001602

0.001628

0.001657

0.001687

0.001719

0.001754

0.001792

H

kJ/kg

-506.2

-484.9

-463.3

-441.2

-418.5

-395.4

-371.6

S DP/DD

kJ/(kg.K)

-1.4992

-1.4126

-1.3277

2444

1622

0810

0006

0.806

0.744

0.680

0.617

0.554

0.494

0.436

DP/DT CP

kJ/(kg.K)

0.813

0.767

0.721

0.675

0.629

0.583

0.538

105

151

193

237

286

340

399

310.0 0.001833

320.0 0.001880

330.0 0.001932

340.0 0.001991

350.0 0.002061

351.42 0.002072

COEXISTING VAPOR (x=

351.42 0.03171

347.3

322.2

296.4

269.6

241.8

237.8

.0509)

30.8

-0.9208

-0.8413

-0.7619

-0.6821

-0.6016

-0.5901

0. 1537

0.380

0.326

0.275

0.226

0. 1798

0. 1735

0.494

0.450

0.407

0.365

0.323

0.317

2

2

2

2

2

2

465

539

622

718

834

853

0.0269 0.00590 2.336

VAPOR

COEXISTING LIQUID (x=.1812)

354.45 0.002054 -243.1 -0.5766 0. 1759 0.316 2.840

354.45

360.0

370.0

380.0

390.0

400.0

0.03155

0.03274

0.03473

0.03658

0.03833

0.03999

28.6

41.6

64

87

110

133

7

6

5

5

0. 1653

0.2016

0.2647

0.3257

0.3852

0.4435

0.0267

0.0287

0.0321

0.0351

0.0379

0.0405

0.00587

0.00553

0.00504

0.00467

0.00437

0.00412

2

2

2

2

2

2

348

316

287

282

291

308

410.0

420.0

430.0

440.0

450.0

460.0

470.0

480.0

490.0

500.0

0.04160

0.04316

0.04468

0.04617

0.04763

0.04906

0.05048

0.05188

0.05326

0.05463

156.7

180.2

203.9

228.0

252

277

302

327

353

379

0.5008

0.5573

0.6132

0.6685

0.7233

0.7775

0.8314

0.8849

0.9379

0.9906

0.0429

0.0452

0.0475

. 0496

0.0517

0.0537

0.0557

0.0577

0.0596

0.0614

0.00391

0.00372

0.00356

0.00342

0.00329

0.00318

0.00307

0.00297

0.00288

0.00280

2.331

2.358

2.388

2.420

2.453

2.487

2.522

2.557

2.592

2.627

510.0

520.0

530.0

540.0

550.0

560.0

570.0

580.0

590.0

600.0

0.05598

0.05733

0.05866

0.05998

0.06130

0.06261

0.06391

0.06521

0.06650

0.06779

405.8

432.6

459.

487.

515.0

543. 1

571.6

600.4

629.6

7

2

659.1

0430

0950

1466

1980

2490

2998

3502

4003

4502

4997

0.0633

0.0651

0.0669

0.0687

0.0704

0.0722

0.0739

0.0756

0.0773

0.0790

0.00272

0.00265

0.00258

0.00252

0.00246

0.00240

0.00235

0.00230

0.00225

0.00220

662

697

731

766

800

833

867

899

932

964
-86-

Table A2.(G0nt.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=l. 4 MPa

T V H S DP/DD DP/DT OP

Deg K in3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001601 -506.0 -1.4997 0.812 0.817 2.104

250.0 0.001628 -484.7 -1.4131 0.749 0.771 2.150

260.0 0.001656 -463.

1

-1.3283 0.685 0.724 2.192

270.0 0.001686 -441.0 -1.2450 0.621 0.678 2.236

280.0 0.001718 -418.4 -1.1629 0.559 0.632 2.284

290.0 0.001753 -395.2 -1.0817 0.499 0.586 2.338

300.0 0.001790 -371.5 -1.0014 0.440 0.541 2.397

310.0 0.001832 -347.2 -0.9217 0.384 0.497 2.462

320.0 0.001877 -322.

1

-0.8423 0.331 0.453 2.535

330.0 0.001929 -296.3 -0.7630 0.280 0.410 2.617

340.0 0.001988 -269.7 -0.6834 0.231 0.368 2.711

350.0 0.002056 -242.0 -0.6032 0. 1851 0.326 2.824

358.98 0.002130 -216.0 -0.5300 0. 1451 0.289 2.953

COEXISTING VAPOR ('x=.0537)

358.98 0.02674 39.1 0.1618

VAPOR

0.0249 0.00722 2.467

COEXISTING LIQUID (x=.1739)

361.83 0.002113 -220.6 -0.5173 0. 1473 0.288 2.938

361.83 0.02661 37. 1 0.1728 0.0247 0.00718 2.478

370.0 0.02821 57.1 0.2274 0.0280 0.00653 2.408

380.0 0.03000 81.0 0.2912 0.0315 0.00594 2.368

390.0 0.03165 104.7 0.3526 0.0347 0.00548 2.355

400.0 0.03319 128.3 0.4123 0.0376 0.00512 2.359

410.0 0.03467 152.0 0.4708 0.0403 0.00482 2.372

420.0 0.03609 175.8 0.5282 0.0428 0.00457 2.392

430.0 0.03746 199.9 0.5848 0.0453 0.00435 2.417

440.0 0.03880 224.2 0.6407 0.0476 0.00416 2.445

450.0 0.04010 248.8 0.6960 0.0498 0.00399 2.475

460.0 0.04138 273.8 0.7508 0.0519 0.00384 2.506

470.0 0.04264 299.0 0.8050 0.0540 0.00370 2.539

480.0 0.04387 324.5 0.8588 0.0561 0.00357 2.572

490.0 0.04509 350.4 0.9122 0.0581 0.00346 2.605

500.0 0.04630 376.7 0.9652 0.0600 0.00335 2.639

510.0 0.04749 403.2 1.0177 0.0620 0.00326 2.673

520.0 0.04867 430.1 1.0699 0.0638 0.00316 2.707

530.0 0.04984 457.3 1.1218 0.0657 0.00308 2.741

540.0 0.05100 484.9 1. 1733 0.0675 0.00300 2.775

550.0 0.05215 512.8 1.2245 0.0694 0.00292 2.808

560.0 0.05330 541.0 1.2754 0.0712 0.00285 2.841

570.0 0.05443 569.6 1.3260 0.0729 0.00279 2.874

580.0 0.05557 598.5 1.3762 0.0747 0.00272 2.906

590.0 0.05669 627.7 1.4262 0.0764 0.00266 2.938

600.0 0.05781 657.3 1.4759 0.0782 0.00261 2.970
-87-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=l. 6 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001600 -505.8 -1 5002 0.818 0.821 2. 104

250.0 0.001627 -484.5 -1 4137 0.754 0.775 2.149

260.0 0.001655 -462.9 -1 3289 0.690 0.728 2.191

270.0 0.001685 -440 .

-1 2457 0.626 0.681 2.235

280.0 0.001717 -418.2 -1 1636 0.564 0.635 2.283

290.0 0.001751 -395.1 -1 0825 0.503 0.589 2.336

300.0 0.001789 -371.4 -1 0022 0.445 0.544 2.395

310.0 0.001830 -347.1 -0 9226 0.389 0.500 2.460

320.0 0.001875 -322.1 -0 8433 0.335 0.456 2.532

330.0 0.001926 -296.3 -0 7641 0.284 0.414 2.612

340.0 0.001984 -269.7 -0 6847 0.236 0.372 2.705

350.0 0.002052 -242.

-0 6046 0. 190 0.330 2.814

360.0 0.002133 -213.2 -0 5234 0. 146 0.288 2.954

365.78 0.002190 -195.78 -0 4754 0. 121 0.264 3.060

COEXISTING VAPOR ( x=.0562)

365.78 0.02295 46.1 1686 0.0228 0.00866 2.609

VAPOR

COEXISTING LIQUID (x=. 1675)

368.47 0.002173 -199.8 -0 4635 0. 123 0.264 3.043

368.47 0.02284 44.4 1790 0.0227 0.00862 2.619

370.0 0.02314 48.4 1899 0.0234 0.00844 2.593

380.0 0.02495 73.8 2576 0.0277 0.00748 2.486

390.0 0.02656 98.4 3216 0.0313 0.00679 2.439

400.0 0.02804 122.7 3832 0.0346 0.00627 2.421

410.0 0.02943 147.0 4430 0.0376 0.00585 2.421

420.0 0.03075 171.3 5015 0.0404 0.00550 2.432

430.0 0.03202 195.7 5590 0.0430 0.00521 2.450

440.0 0.03325 220.4 6156 0.0455 0.00496 2.472

450.0 . 03444 245.2 6715 0.0478 0.00474 2.498

460.0 0.03561 270.4 7267 0.0501 0.00454 2.527

470.0 0.03674 295.8 7814 0.0523 0.00437 2.557

480.0 0.03786 321.5 8355 0.0545 0.00421 2.588

490.0 0.03896 347.6 8892 0.0566 0.00407 2.620

500.0 0.04005 373.9 9425 0.0586 0.00393 2.653

510.0 0.04112 400.6 .9953 0.0606 0.00381 2.685

520.0 0.04218 427.6 1 .0477 0.0626 0.00370 2.718

530.0 0.04322 454.9 1 .0998 0.0645 0.00360 2.751

540.0 0.04426 482.6 1 . 1515 0.0664 0.00350 2.784

550.0 0.04529 510.6 1 .2029 0.0683 0.00341 2.817

560.0 0.04631 538.9 1 .2539 0.0702 0.00332 2.849

570.0 0.04732 567.6 1 .3046 0.0720 0.00324 2.882

580.0 0.04833 596.5 1 .3550 0.0738 0.00317 2.914

590.0 0.04933 625.8 1 .4051 0.0756 0.00309 2.945

600.0 0.05033 655.5 1 .4549 0.0774 0.00302

*

5r * ,

2.976
-88-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=l. 8 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001600 -505.6 -1.5007 0.823 0.825 2.103

250.0 0.001626 -484.4 -1.4142 0.759 0.778 2.148

260.0 0.001654 -462.7 -1.3295 0.695 0.V31 2.190

270.0 0.001684 -440.7 -1.2463 0.631 0.684 2.234

280.0 0.001716 -418.

1

-1.1642 0.569 0.638 2.282

290.0 0.001750 -394.9 -1.0832 0.508 0.592 2.334

300.0 0.001787 -371.3 -1.0030 0.449 0.547 2.393

310.0 0.001828 -347.0 -0.9234 0.393 0.503 2.457

320.0 0.001873 -322.0 -0.8442 0.340 0.459 2.528

330.0 0.001924 -296.3 -0.7652 0.289 0.417 2.608

340.0 0.001981 -269.7 -0.6859 0.240 0.375 2.698

350.0 0.002047 -242.2 -0.6061 0.194 0.333 2.805

360.0 0.002127 -213.4 -0.5252 0. 150 0.292 2.940

370.0 0.002227 -183.

1

-0.4421 0.108 0.250 3.128

372.00 0.002251 -176.8 -0.4251 0.100 0.241 3.178

COEXISTING VAPOR ('x=.0587)

372.00 0.01995 52.1 0.1741

VAPOR

0.0208 0.01024 2.768

COEXISTING LIQUID (x=. 1618)

374.53 0.002235 -180.4 -0.4139 0.102 0.241 3.158

374.53 0.01986 50.5 0. 1840 0.0207 0.01020 2.776

380.0 0.02087 65.4 0.2235 0.0234 0.00941 2.663

390.0 0.02251 91.5 0.2912 0.0277 0.00835 2.551

400.0 0.02397 116.7 0.3552 0.0315 0.00759 2.501

410.0 0.02532 141.7 0.4167 0.0348 0.00700 2.481

420.0 0.02658 166.5 0.4765 0.0379 0.00654 2.478

430.0 0.02777 191.4 0.5350 0.0407 0.00615 2.487

440.0 0.02892 216.3 0.5924 0.0434 0.00582 2.504

450.0 0.03003 241.5 0.6489 0.0459 0.00554 2.525

460.0 0.03111 266.9 0.7047 0.0483 0.00529 2.549

470.0 0.03216 292.5 0.7598 0.0506 0.00508 2.577

480.0 0.03318 318.4 0.8143 0.0529 0.00488 2.605

490.0 0.03419 344.6 0.8684 0.0551 0.00471 2.636

500.0 0.03518 371.2 0.9219 0.0572 0.00454 2.667

510.0 0.03616 398.0 0.9750 0.0593 0.00440 2.698

520.0 0.03712 425. 1 1.0277 0.0614 0.00426 2.730

530.0 0.03808 452.5 1.0800 0.0634 0.00414 2.762

540.0 0.03902 480.3 1. 1319 0.0653 0.00402 2.794

550.0 0.03995 508.4 1. 1834 0.0673 0.00391 2.826

560.0 0.04088 536.8 1.2346 0.0692 0.00381 2.858

570.0 0.04180 565.5 1.2855 0.0711 0.00371 2.889

580.0 0.04271 594.6 1.3360 0.0729 0.00362 2.921

590.0 0.04361 624.0 1.3862 0.0748 0.00354 2.952

600.0 0.04451 653.7 1.4361 0.0766 0.00346 2.983
-89-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=2.0 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ /(kg.K)

240.0 0.001599 -505.4 -1.5013 0.829 0.829 2. 102

250.0 0.001625 -484 .

-1.4148 0.765 0.782 2. 147

260.0 0.001653 -462.5 -1.3300 0.700 0.735 2. 189

270.0 0.001683 -440.5 -1.2469 0.636 0.688 2.233

280.0 0.001715 -417.9 -1. 1649 0.573 0.641 2.280

290.0 0.001749 -394.8 -i.0839 0.512 0.595 2.ZQ2 ^ 300.0 0.001786 -371.1 -jf^mmza 0.454 0.550 2:^M'

310.0 0.001826 -346.9 -0.9243 0.398 0.506 2.455

320.0 0.001871 -321.9 -0.8452 0.344 0.462 2.525

330.0 0.001921 -296.2 -0.7662 0.293 0.420 2.603

340.0 0.001978 -269.7 -0.6871 0.245 0.378 2.692

350.0 0.002043 -242.3 -0.6075 0.1990 0.337 2.796

360.0 0.002121 -213.6 -0.5269 0.1553 0.296 2.926

370.0 0.002218 -183.5 -0.4444 0. 1136 0.254 3. 103

377.73 0.002316 -158.73 -0.3781 0.0824 0.221 3.313

COEXISTING VAPOR ( x=.0611)

377.73 0.01751 57. 1 0.1783

VAPOR

0.0188 0.01198 2.951

COEXISTING LIQUID (x=.1567)

380.11 0.002301 -161.9 -0.3676 0.0841 0.221 3.290

380.11 0.01743 55.6 0. 1878 0.0186 0.01193 2.958

390.0 0.01917 83.6 0.2603 0.0238 0.01026 2.713

400.0 0.02065 110.2 0.3276 0.0282 0.00914 2.604

410.0 0.02198 136.0 0.3913 0.0319 0.00833 2.554

420.0 0.02320 161.4 0.4526 0.0353 0.00770 2.534

430.0 0.02435 186.8 0.5122 0.0383 0.00719 2.531

440.0 0.02544 212.2 0.5705 0.0412 0.00677 2.539

450.0 0.02649 237.6 0.6278 0.0439 0.00641 2.554

460.0 0.02750 263.3 0.6842 0.0465 0.00610 2.574

470.0 0.02848 289.2 0.7398 0.0489 0.00583 2.598

480.0 0.02943 315.3 0.7948 0.0513 0.00559 2.624

490.0 0.03037 341.7 0.8492 0.0536 0.00538 2.652

500.0 0.03129 368.3 0.9030 0.0558 0.00519 2.681

510.0 0.03219 395.3 0.9564 0.0580 0.00501 2.711

520.0 0.03308 422.5 1.0093 0.0601 0.00485 2.742

530.0 0.03396 450. 1 1.0618 0.0622 0.00470 2.773

540.0 0.03482 478.0 1. 1139 0.0642 0.00456 2.804

550.0 0.03568 506.2 1.1656 0.0663 0.00443 2.835

560.0 0.03653 534.7 1.2170 0.0682 0.00431 2.866

570.0 0.03737 563.5 1.2680 0.0702 0.00420 2.897

580.0 0.03821 592.6 1.3187 0.0721 0.00409 2.928

590.0 0.03903 622. 1 1.3690 0.0740 0.00399 2.959

600.0 0.03986 651.8 1.4190 0.0759 0.00390 2.989
-90-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=2. 2 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001598 -505.2 -1.5018 0.834 0.833 2.102

250.0 0.001625 -484.0 -1.4153 0.770 0.786 2.147

260.0 0.001652 -462.4 -1.3306 0.705 0.738 2.188

270.0 0.001682 -440.3 -1.2475 0.641 0.691 2.232

280.0 0.001714 -417.7 -1.1655 0.578 0.644 2.279

290.0 0.001748 -394.7 -1.0846 0.517 0.598 2.331

300.0 0.001784 -371.0 -1.0045 0.458 0.553 2.389

310.0 0.001825 -346.8 -0.9251 0.402 0.509 2.452

320.0 0.001869 -321.9 -0.8461 0.349 0.465 2.522

330.0 0.001918 -296.2 -0.7673 0.298 0.423 2.599

340.0 0.001974 -269.7 -0.6883 0.250 0.381 2.686

350.0 0.002039 -242.3 -0.6089 0.204 0.340 2.788

360.0 0.002115 -213.8 -0.5286 0.1601 0.300 2.913

370.0 0.002210 -183.8 -0.4465 0.1187 0.259 3.081

380.0 0.002336 -151.8 -0.3610 0.0789 0.216 3.347

383.05 0.002385 -141.3 -0.3337 0.0669 0.202 3.472

COEXISTING VAPOR (:x=.0634)

383.05 0.01548 61.05 0.1812

VAPOR

0.0167 0.01391 3.169

COEXISTING LIQUID (x=.1519)

385.29 0.002370 -144.

1

-0.3239 0.0685 0.202 3.445

385.29 0.01541 59.9 0.1902 0.0166 0.01386 3.175

390.0 0.01629 74.3 0.2275 0.0195 0.01271 2.968

400.0 0.01786 102.8 0.2996 0.0246 0.01101 2.747

410.0 0.01920 129.8 0.3661 0.0288 0.00985 2.648

420.0 0.02041 156.0 0.4294 0.0326 0.00900 2.601

430.0 0.02153 182.0 0.4904 0.0359 0.00834 2.582

440.0 0.02258 207.8 0.5497 0.0390 0.00780 2.579

450.0 0.02357 233.6 0.6078 0.0419 0.00735 2.587

460.0 0.02453 259.6 0.6648 . 0446 0.00697 2.602

470.0 0.02546 285.7 0.7210 0.0472 0.00664 2.621

480.0 0.02636 312. 1 0.7765 0.0497 0.00635 2.644

490.0 0.02724 338.6 0.8312 0.0521 0.00609 2.670

500.0 0.02810 365.5 0.8855 0.0544 0.00586 2.697

510.0 0.02894 392.6 0.9391 0.0567 0.00565 2.725

520.0 0.02977 420.0 0.9923 0.0589 0.00546 2.755

530.0 0.03059 447.7 1.0450 0.0611 0.00528 2.784

540.0 0.03139 475.6 1.0973 0.0632 0.00512 2.814

550.0 0.03219 503.9 1. 1492 0.0652 0.00497 2.845

560.0 0.03297 532.5 1.2008 0.0673 0.00483 2.875

570.0 0.03375 561.4 1.2519 0.0693 0.00470 2.906

580.0 0.03453 590.6 1.3027 0.0712 0.00458 2.936

590.0 0.03529 620.2 1.3532 0.0732 0.00446 2.966

600.0 0.03605 650.0 1.4033 0.0751 0.00435 2.996
-91-

Table A2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=2.4 MPa

T V H S DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg.K) kJ /(kg.K)

240.0 0.001598 -505.0 -1.5023 840 0.837 2.101

250.0 0.001624 -483.8 -1.4158 775 0.789 2. 146

260.0 0.001652 -462.2 -1.3312 710 0.741 2. 187

270.0 0.001681 -440 .

-1.2481 645 0.694 2.231

280.0 0.001713 -417.6 -1.1662 582 0.647 2.278

290.0 0.001746 -394.5 -1.0853 522 0.601 2.329

300.0 0.001783 -370.9 -1.0053 463 0.556 2.387

310.0 0.001823 -346.7 -0.9260 407 0.511 2.450

320.0 0.001867 -321.8 -0.8470 353 0.468 2.519

330.0 0.001916 -296.2 -0.7683 0. 302 0.426 2.595

340.0 0.001971 -269.8 -0.6895 254 0.384 2.681

350.0 0.002035 -242.4 -0.6103 208 0.344 2.780

360.0 0.002110 -214.0 -0.5303 1649 0.303 2.901

370.0 0.002202 -184.2 -0.4486 1237 0.263 3.060

380.0 0.002322 -152.4 -0.3640 0843 0.221 3.303

388.03 0.002460 -124.5 -0.2914 0535 0.185 3.669

COEXISTING VAPOR ( x=.0658)

388.03 0.01374 64.3 0.1826

VAPOR

0146 0.01608 3.440

COEXISTING LIQUID (x=. 1473)

390. 13 0.002446 -127.0 -0.2823 0548 0.185 3.635

390. 13 0.01369 63.2 0. 1912 0145 0.01602 3.444

400.0 0.01543 94.4 0.2702 0207 0.01331 2.958

410.0 0.01683 123.0 0.3408 0256 0.01165 2.771

420.0 0.01805 150.3 0.4065 0298 0.01049 2.684

430.0 0.01915 176.9 0.4691 0335 0.00962 2.642

440.0 0.02017 203.3 0.5297 0368 0.00893 2.625

450.0 0.02114 229.5 0.5887 0399 0.00837 2.624

460.0 0.02206 255.8 0.6465 0428 0.00790 2.632

470.0 0.02294 282.2 0.7033 0455 0.00750 2.647

480.0 0.02380 308.8 0.7592 0481 0.00715 2.666

490.0 0.02463 335.6 0.8144 0506 0.00684 2.689

500.0 0.02544 362.6 0.8690 0531 0.00657 2.714

510.0 0.02623 389.8 0.9229 0554 0.00632 2.740

520.0 0.02701 417.4 0.9764 0577 0.00610 2.768

530.0 0.02778 445.2 1.0294 0599 0.00589 2.796

540.0 0.02853 473.3 1.0819 0621 0.00571 2.825

550.0 0.02928 501.7 1. 1340 .0642 0.00553 2.855

560.0 0.03001 530.4 1. 1857 .0663 0.00537 2.884

570.0 0.03074 559.4 1.2370 .0684 0.00522 2.914

580.0 0.03146 588.7 1.2880 0704 0.00508 2.944

590.0 0.03217 618.3 1.3386 .0724 0.00495 2.974

600.0 0.03288 648.2 1.3888 .0744 0.00482 3.003
-92-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=2.6 MPa

T V H S DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg.K) kJ /(kg.K)

240.0 0.001597 -504.8 -1.5028 0. 845 0.841 2.101

250.0 0.001623 -483.6 -1.4164 0. 780 0.793 2.145

260.0 0.001651 -462.0 -1.3318 0. 715 0.745 2.187

270.0 0.001680 -440.0 -1.2487 0. 650 0.697 2.230

280.0 0.001712 -417.4 -1.1668 0. 587 0.650 2.276

290.0 0.001745 -394.4 -1.0860 0. 526 0.604 2.328

300.0 0.001782 -370.8 -1.0061 467 0.559 2.385

310.0 0.001821 -346.6 -0.9268 0. 411 0.514 2.447

320.0 0.001865 -321.7 -0.8480 358 0.471 2.516

330.0 0.001913 -296.

1

-0.7694 307 0.429 2.591

340.0 0.001968 -269.8 -0.6907 258 0.387 2.675

350.0 0.002031 -242.5 -0.6117 213 0.347 2.773

360.0 0.002104 -214.1 -0.5319 1696 0.307 2.889

370.0 0.002194 -184.5 -0.4507 1286 0.267 3.041

380.0 0.002310 -153.0 -0.3667 0896 0.226 3.264

390.0 0.002479 -118.4 -0.2770 0519 0.181 3.698

392.71 0.002544 -108.1 -0.2505 0417 0.168 3.923

COEXISTING VAPOR (:x=.0682)

392.71 0.01224 66.5 0.1825

VAPOR

0125 0.01852 3.793

COEXISTING LIQUID (x=. 1429)

394.66 0.002529 -110.2 -0.2422 0428 0.169 3.880

394.66 0.01219 65.6 0.1906 0125 0.01846 3.794

400.0 0.01323 84.4 0.2379 0164 0.01630 3.309

410.0 0.01476 115.4 0.3145 0222 0.01380 2.942

420.0 0.01601 144.0 0.3834 0269 0.01220 2.789

430.0 0.01711 171.5 0.4482 0309 0.01106 2.715

440.0 0.01812 198.5 0.5102 0345 0.01018 2.679

450.0 0.01906 225.2 0.5702 0378 0.00948 2.666

460.0 0.01995 251.9 0.6288 0409 0.00891 2.666

470.0 0.02080 278.6 0.6863 0438 0.00842 2.675

480.0 0.02162 305.4 0.7428 0465 0.00800 2.690

490.0 0.02242 332.4 0.7984 0492 0.00764 2.709

500.0 0.02319 359.6 0.8534 0517 0.00731 2.731

510.0 0.02394 387. 1 0.9077 0541 0.00702 2.756

520.0 0.02468 414.7 0.9614 0565 0.00676 2.782

530.0 0.02540 442.7 1.0146 0588 0.00653 2.809

540.0 0.02611 470.9 1.0674 0610 0.00631 2.837

550.0 0.02681 499.4 1.1197 0632 0.00611 2.865

560.0 0.02750 528.2 1. 1716 0654 0.00593 2.894

570.0 0.02819 557.3 1.2230 0675 0.00576 2.923

580.0 0.02886 586.7 1.2741 0696 0.00560 2.952

590.0 0.02953 616.4 1.3249 0716 0.00545 2.981

600.0 0.03020 646.3 1.3753 0737 0.00530 3.010
-93-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=2. 8 MPa

T V H s DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg. K) kJ /(kg.K)

240.0 0.001597 -504.6 -1 5033 850 0.845 2.100

250.0 0.001623 -483.4 -1 4169 785 0.796 2. 144

260.0 0.001650 -461.8 -1 3323 720 0.748 2.186

270.0 0.001679 -439.8 -1 2493 655 0.700 2.228

280.0 0.001711 -417.3 -1 1675 592 0.653 2.275

290.0 0.001744 -394.2 -1 0867 530 0.607 2.326

300.0 0.001780 -370.6 -1 0068 472 0.561 2.383

310.0 0.001820 -346.4 -0 9276 415 0.517 2.445

320.0 0.001863 -321.6 -0 8489 362 0.474 2.512

330.0 0.001911 -296.

-0 7704 311 0.432 2.587

340.0 0.001965 -269.8 -0 6919 263 0.391 2.670

350.0 0.002027 -242.5 -0 6130 217 0.350 2.765

360.0 0.002099 -214.3 -0 5335 1742 0.310 2.878

370.0 0.002186 -184.8 -0 4527 1335 0.271 3.023

380.0 0.002298 -153.5 -0 3694 0948 0.230 3.230

390.0 0.002457 -119.5 -0 2811 0577 0. 187 3.603

397. 13 0.002638 -91.8 -0 2106 0314 0.152 4.271

COEXISTING VAPOR ( x=.0708)

397. 13 0.01090 67.6 1805 0104 0.02134 4.281

VAPOR

COEXISTING LIQUID Cx=. 1385)

398.93 0.002624 -93.7 -0 2030 0324 0. 153 4.214

398.93 0.01086 66.9 1881 0104 0.02126 4.277

400.0 0.01111 71.3 1992 0114 0.02056 4.058

410.0 0.01289 106.6 2864 0185 0.01646 3:198

420.0 0.01422 137. 1 3599 0239 0.01420 2.927

430.0 0.01534 165.7 4272 0283 0.01268 2.803

440.0 0.01635 193.5 4909 0322 0.01156 2.742

450.0 0.01728 220.8 5522 0358 0.01069 2.713

460.0 0.01814 247.8 6118 0390 0.00999 2.703

470.0 0.01897 274.9 6699 0421 0.00940 2.705

480.0 0.01976 302.0 7270 0450 0.00891 2.715

490.0 0.02052 329.2 7831 0477 0.00847 2.731

500.0 0.02125 356.6 8385 0503 0.00810 2.750

510.0 0.02197 384.2 8931 0529 0.00776 2.772

520.0 0.02268 412. 1 9472 0553 0.00746 2.796

530.0 0.02336 440.2 1 0007 0577 0.00719 2.822

540.0 0.02404 468.5 1 0537 0600 0.00694 2.848

550.0 0.02470 497. 1 1 1062 0623 0.00671 2.876

560.0 0.02536 526.0 1 1582 0645 0.00650 2.904

570.0 0.02600 555.2 1 2099 0666 0.00631 2.932

580.0 0.02664 584.7 1 2611 0688 0.00613 2.960

590.0 0.02727 614.4 1 .3120 0709 0.00596 2.989

600.0 0.02790 644.5 1 .3625 0729 0.00580 3.017
-94-

Table A2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=3.0 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ /(kg.K)

240.0 0.001596 -504.4 -1.5038 0.856 0.848 2.099

250.0 0.001622 -483.2 -1.4174 0.790 0.800 2.144

260.0 0.001649 -461.6 -1.3329 0.724 0.751 2.185

270.0 0.001678 -439.6 -1.2499 0.660 0.703 2.227

280.0 0.001710 -417.1 -1.1681 0.596 0.656 2.274

290.0 0.001743 -394.1 -1.0874 0.535 0.610 2.325

300.0 0.001779 -370.5 -1.0076 0.476 0.564 2.381

310.0 0.001818 -346.3 -0.9285 0.420 0.520 2.442

320.0 0.001861 -321.5 -0.8498 0.366 0.477 2.510

330.0 0.001909 -296.0 -0.7714 0.315 0.435 2.583

340.0 0.001962 -269.8 -0.6930 0.267 0.394 2.665

350.0 0.002023 -242.6 -0,6143 0.222 0.353 2.758

360.0 0.002094 -214.4 -0.5351 0.1788 0.314 2.868

370.0 0.002179 -185.0 -0.4546 0. 1383 0.274 3.006

380.0 0.002287 -154.0 -0.3719 0.0998 0.235 3.199

390.0 0.002436 -120.5 -0.2849 0.0632 0.193 3.527

400.0 0.002694 -81.6 -0. 1864 0.0275 0. 145 4.464

401.33 0.002750 -75.4 -0. 1710 0.0226 0.137 4.790

COEXISTING VAPOR ( x=.0735)

401.33 0.00968 67.6 0. 1761

VAPOR

0.0083 0.02464 5.011

COEXISTING LIQUID (x=.1339)

402.96 0.002735 -77. 1 -0. 1642 0.0234 0. 138 4.708

402.96 0.00966 66.9 0. 1831 0.0083 0.02455 4.998

410.0 0.01115 96.1 0.2549 0.0145 0.01992 3.632

420.0 0.01261 129.4 0.3352 0.0207 0.01658 3. 116

430.0 0.01378 159.5 0.4060 0.0257 0.01454 2.915

440.0 0.01479 188.2 0.4718 0.0299 0.01310 2.817

450.0 0.01571 216.1 0.5345 0.0337 0.01202 2.768

460.0 0.01657 243.7 0.5951 0.0372 0.01116 2.745

470.0 0.01737 271. 1 0.6541 0.0404 0.01046 2.739

480.0 0.01813 298.5 0.7118 0.0434 0.00987 2.743

490.0 0.01887 326.0 0.7685 0.0463 0.00936 2.754

500.0 0.01958 353.6 0.8243 0.0490 0.00892 2.770

510.0 0.02027 381.4 0.8793 0.0516 0.00853 2.789

520.0 0.02094 409.4 0.9336 0.0541 0.00819 2.811

530.0 0.02160 437.6 0.9874 0.0566 0.00787 2.835

540.0 0.02224 466. 1 1.0406 0.0590 0.00759 2.860

550.0 0.02287 494.8 1.0933 0.0613 0.00733 2.887

560.0 0.02350 523.8 1. 1456 0.0636 0.00710 2.913

570.0 0.02411 553. 1 1. 1974 0.0658 0.00688 2.941

580.0 0.02472 582.7 1.2488 0.0680 0.00667 2.969

590.0 0.02531 612.5 1.2998 0.0701 0.00648 2.996

600.0 0.02591 642.7 1.3505 0.0722 0.00631 3.024
-95-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=3.2 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/Ckg.K) kJ /(kg.K)

240.0 0.001595 -504.2 -1. 5043 0. 861 0.852 2.099

250.0 0.001621 -483.0 -1. 4180 0. 795 0.803 2. 143

260.0 0.001649 -461.4 -1. 3335 0. 729 0.755 2. 184

270.0 0.001678 -439.5 -1. 2505 0. 664 0.706 2.226

280.0 0.001709 -416.9 -1. 1688 0. 601 0.659 2.272

290.0 0.001742 -393.9 -1. 0881 0. 539 0.612 2.323

300.0 0.001778 -370.4 -1. 0083 480 0.567 2.379

310.0 0.001817 -346.2 -0. 9293 4241 0.523 2.440

320.0 0.001859 -321.5 -0. 8507 0. 3706 0.479 2.507

330.0 0.001906 -296.0 -0. 7724 3198 0.437 2.580

340.0 0.001959 -269.7 -0. 6941 2717 0.396 2.660

350.0 0.002019 -242.7 -0. 6156 2263 0.356 2.752

360.0 0.002089 -214.6 -0. 5366 1834 0.317 2.858

370.0 0.002172 -185.3 -0. 4564 1430 0.278 2.991

380.0 0.002277 -154.5 -0 3743 1048 0.239 3. 171

390.0 0.002418 -121.4 -0 2884 0686 0. 198 3.464

400.0 0.002646 -83.8 -0 1933 0339 0. 153 4. 168

405.32 0.002887 -58.7 -0 1308 0150 0.122 5.655

COEXISTING VAPOR ( x=.0766)

405.32 0.00855 65.8 1684 0062 0.02866 6.236

VAPOR

COEXISTING LIQUID (x=.1291)

406.76 0.002872 -60.0 -0 1250 0156 0. 123 5.528

406.76 0.00853 65.4 1748 0062 0.02855 6.203

410.0 0.00941 82.3 2163 0098 0.02491 4.581

420.0 0.01113 120.7 3087 0173 0.01950 3.395

430.0 0.01237 152.7 3841 0229 0.01669 3.058

440.0 0.01341 182.5 4526 0275 0.01483 2.907

450.0 0.01433 211.2 5170 0316 0.01348 2.831

460.0 0.01518 239.3 5788 0353 0.01243 2.792

470.0 0.01597 267.2 6387 0387 0.01159 2.776

480.0 0.01671 294.9 6971 0418 0.01089 2.773

490.0 0.01742 322.7 7543 0448 0.01030 2.779

500.0 0.01811 350.5 8105 0476 0.00979 2.791

510.0 0.01878 378.5 8660 0504 0.00934 2.807

520.0 0.01942 406.7 9206 0530 0.00894 2.827

530.0 0.02005 435.0 9747 0555 0.00859 2.849

540.0 0.02067 463.6 1 0282 0580 0.00827 2.873

550.0 0.02127 492.5 1 0811 .0604 0.00798 2.898

560.0 0.02187 521.6 1 1336 .0627 0.00771 2.924

570.0 0.02245 551.0 1 . 1855 .0650 0.00746 2.950

580.0 0.02303 580.7 1 .2371 .0672 0.00724 2.977

590.0 0.02360 610.6 1 .2883 .0694 0.00703 3.004

600.0 0.02417 640.8 1 .3391 .0716 0.00683 3.032
-96-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=3.4 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ /(kg.K)

240.0 0.001595 -504.0 -1.5048 0.867 0.856 2.098

250.0 0.001621 -482.8 -1.4185 0.800 0.807 2.142

260.0 0.001648 -461.3 -1.3340 0.734 0.758 2.183

270.0 0.001677 -439.3 -1.2511 0.669 0.709 2.225

280.0 0.001708 -416.8 -1. 1694 0.605 0.662 2.271

290.0 0.001741 -393.8 -1.0888 0.544 0.615 2.322

300.0 0.001776 -370.2 -1.0091 0.485 0.570 2.377

310.0 0.001815 -346.

1

-0.9301 0.4285 0.525 2.438

320.0 0.001857 -321.4 -0.8516 0.3749 0.482 2.504

330.0 0.001904 -295.9 -0.7734 0.3241 0.440 2.576

340.0 0.001956 -269.7 -0.6953 0.2760 0.399 2.656

350.0 0.002016 -242.7 -0.6169 0.2307 0.359 2.745

360.0 0.002084 -214.7 -0.5381 0.1879 0.320 2.849

370.0 0.002166 -185.5 -0.4583 0.1476 0.282 2.977

380.0 0.002267 -154.9 -0.3767 0.1097 0.243 3.146

390.0 0.002402 -122.2 -0.2917 0.0739 0.203 3.410

400.0 0.002609 -85.7 -0.1992 0.0398 0.160 3.971

409. 13 0.003070 -40.8 -0.0883 0.0087 0.107 7.400

COEXISTING VAPOR ( x=.0804)

409. 13 0.00744 61.7 0. 1555

VAPOR

0.0041 0.03385 8.725

COEXISTING LIQUID (x=.1236)

410.34 0.003054 -41.9 -0.0837 0.0092 0.108 7.166

410.34 0.00743 61.4 0. 1611 0.0041 0.03371 8.635

420.0 0.00973 110.3 0.2790 0.0137 0.02325 3.848

430.0 0.01109 145.3 0.3613 0.0200 0.01921 3.249

440.0 0.01217 176.5 0.4330 0.0251 0.01678 3.018

450.0 0.01310 206. 1 0.4995 0.0295 0.01508 2.905

460.0 0.01394 234.8 0.5627 0.0334 0.01381 2.846

470.0 0.01472 263.1 0.6235 0.0370 0.01280 2.817

480.0 0.01545 291.2 0.6827 0.0403 0.01198 2.805

490.0 0.01615 319.3 0.7405 0.0434 0.01129 2-. 805

500.0 0.01681 347.4 0.7973 0.0463 0.01070 2.813

510.0 0.01746 375.6 0.8531 0.0491 0.01019 2.827

520.0 0.01808 403.9 0.9081 0.0518 0.00973 2.844

530.0 0.01869 432.4 0.9625 0.0544 0.00933 2.864

540.0 0.01928 461.2 1.0162 0.0570 0.00897 2.886

550.0 0.01986 490.2 1.0694 0.0594 0.00864 2.910

560.0 0.02043 519.4 1.1220 0.0618 0.00834 2.934

570.0 0.02099 548.9 1. 1742 0.0642 0.00807 2.960

580.0 0.02155 578.6 1.2260 0.0664 0.00782 2.986

590.0 0.02209 608.7 1.2773 0.0687 0.00758 3.012

600.0 0.02263 639.0 1.3282 0.0709 0.00736 3.039
-97-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P=3.6 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240.0 0.001594 -503.8 -1.5053 0.872 0.860 2.097

250.0 0.001620 -482.6 -1.4190 0.806 0.810 2. 141

260.0 0.001647 -461.

-1.3346 0.739 0.761 2. 182

270.0 0.001676 -439.

-1.2517 0.674 0.712 2.224

280.0 0.001707 -416.6 -1.1701 0.610 0.665 2.270

290.0 0.001739 -393.6 -1.0895 0.548 0.618 2.320

300.0 0.001775 -370.

-1.0098 0.489 0.572 2.375

310.0 0.001813 -346.0 -0.9309 0.4328 0.528 2.436

320.0 0.001855 -321.3 -0.8525 0.3792 0.485 2.501

330.0 0.001902 -295.9 -0.7744 0.3284 0.443 2.572

340.0 0.001953 -269.7 -0.6964 0.2803 0.402 2.651

350.0 0.002012 -242.7 -0.6182 0.2350 0.363 2.739

360.0 0.002080 -214.8 -0.5396 0. 1924 0.324 2.840

370.0 0.002160 -185.8 -0.4600 0. 1522 0.285 2.963

380.0 0.002258 -155.3 -0.3789 0. 1145 0.247 3.124

390.0 0.002387 -122.9 -0.2948 0.0790 0.208 3.363

400.0 0.002577 -87.2 -0.2044 0.0455 0.166 3.828

410.0 0.002983 -42. 1 -0.0930 0.0134 0.115 5.919

412.80 0.003359 -19.9 -0.0391 0.0037 0.091 12.568

COEXISTING VAPOR (:x=.0857)

412.80 0.00625 52.6 0. 1321

VAPOR

0.0242 0.0403 13.758

COEXISTING LIQUID (x=.1164)

413.68 0.003341 -20.8 -0.0362 0.0040 0.091 11.944

413.68 0.00627 52.8 0. 1365 0.0025 0.0399 13.377

420.0 0.00834 97. 1 0.2433 0.0098 0.0284 4.731

430.0 0.00991 136.8 0.3368 0.0171 0.0222 3.516

440.0 0.01105 170.0 0.4129 0.0227 0.01901 3. 155

450.0 0.01200 200.6 0.4819 0.0274 0.01687 2.991

460.0 0.01284 230.1 0.5466 0.0315 0.01531 2.906

470.0 0.01361 258.9 0.6086 0.0353 0.01411 2.862

480.0 0.01433 287.4 0.6686 0.0387 0.01314 2.841

490.0 0.01501 315.8 0.7271 0.0420 0.01234 2.834

500.0 0.01566 344.2 0.7844 0.0450 0.01166 2.837

510.0 0.01629 372.6 0.8407 0.0479 0.01107 2.847

520.0 0.01689 401. 1 0.8961 0.0507 0.01056 2.861

530.0 0.01748 429.8 0.9507 0.0534 0.01011 2.879

540.0 0.01805 458.7 1.0047 0.0560 0.00970 2.899

550.0 0.01861 487.8 1.0581 0.0585 0.00933 2.922

560.0 0.01916 517.2 1. 1110 0.0610 0.00900 2.945

570.0 0.01970 546.8 1.1634 0.0634 0.00869 2.970

580.0 0.02023 576.6 1.2153 0.0657 0.00841 2.995

590.0 0.02075 606.7 1.2667 0.0680 0.00815 3.021

600.0 0.02127 637. 1 1.3178 0.0702 0.00791 3.047
-98-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 3.8 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001594 -503 6 -1 5058 0. 877 864 2.097

250 001619 -482. 5 -1 4196 0. 811 814 2.141

260 001646 -460. 9 -1 3351 0. 744 764 2.181

270 001675 -438. 9 -1 2523 0. 678 715 2.223

280 001706 -416 5 -1 1707 0. 614 668 2.269

290 001738 -393 5 -1 0902 553 621 2.319

300 001774 -370 -1 0106 493 575 2.374

310 001812 -345 9 -0 9317 437 531 2.433

320 001854 -321 2 -0 8534 383 488 2.498

330 001900 -295 8 -0 7753 333 446 2.569

340 001951 -269 7 -0 6975 285 405 2.646

350 002009 -242 8 -0 6194 2394 366 2.733

360 002075 -214 9 -0 5410 1968 327 2.832

370 002153 -186 -0 4618 1568 289 2.950

380 002249 -155 7 -0 3811 1192 251 3.103

385 002306 -139 9 -0 3398 1013 232 3.201

390 002372 -123 6 -0 2977 0840 212 3.323

395 002451 -106 6 -0 2543 0672 193 3.484

400 002549 -88 6 -0 2091 0510 172 3.718

405 002679 -69 1 -0 1606 0353 150 4.107

410 002878 -46 6 -0 1056 0200 126 4.971

415 003359 -14 -0 0265 0050 091 10.191

420 006810 77 9 1938 0054 0368 7.239

425 007982 105 9 2603 0103 0298 4.665

430 008789 127 1 3099 0141 0260 3.912

435 009445 145 7 3528 0173 0235 3.546

440 010014 162 9 3921 0202 0216 3.330

445 010526 179 2 4289 0228 0201 3.190

450 010995 194 9 4640 0253 0189 3.094

460 011846 225 2 5306 0296 0170 2.975

470 012615 254 6 5939 0336 0155 2.912

480 013325 283 6 6548 0372 0144 2.879

490 013993 312 3 7140 0406 0134 2.865

500 01463 340 9 7719 0437 01267 2.862

510 01524 369 6 8286 0467 01200 2.868

520 01582 398 3 8844 0496 01142 2.879

530 01639 427 2 9394 0524 01091 2.895

540 01695 456 2 9936 0550 01046 2.913

550 01749 485 5 1 0473 0576 01005 2.934

560 01802 514 9 1 1004 0601 00968 2.956

570 01854 544 6 1 1529 0626 00934 2.980

580 01905 574 6 1 2050 0650 00903 3.004

590 01955 604 8 1 2566 0673 00874 3.029

600 02005 635 3 1 3078 0696 00847 3.054
-99-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 4 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240. 001593 -503 4 -1 5063 883 0. 867 2.096

250. 001619 -482 3 -1 4201 0. 816 0. 817 2.140

260. 001646 -460 7 -1 3357 0. 749 0. 767 2.180

270. 001674 -438 8 -1 2529 0. 683 0. 718 2.222

280. 001705 -416 3 -1 1713 0. 619 0. 670 2.268

290. 001737 -393 3 -1 0908 557 0. 624 2.317

300. 001772 -369 8 -1 0113 0. 498 0. 578 2.372

310. 001810 -345 8 -0. 9325 0. 441 0. 533 2.431

320. 001852 -321 1 -0 8542 0. 388 0. 490 2.496

330. 001897 -295 8 -0 7763 337 0. 449 2.566

340. 001948 -269 7 -0 6985 289 408 2.642

350. 002005 -242 8 -0 6207 2437 368 2.727

360. 002071 -215 -0 5424 2012 330 2.824

370. 002147 -186 2 -0 4635 1613 292 2.938

380. 002241 -156 -0 3832 1239 255 3.083

385. 002296 -140 4 -0 3422 1061 236 3.175

390 002359 -124 2 -0 3005 0889 217 3.287

395 002434 -107 4 -0 2577 0723 198 3.431

400 002525 -89 7 -0 2133 0563 178 3.630

405 002641 -70 8 -0 1663 0409 157 3.937

410 002807 -49 8 -0 1148 0261 134 4.511

415 003098 -24 -0 0521 0120 107 6.164

420 004560 35 0890 0016 0595 21.740

425 006700 89 3 2177 0067 0372 6.314

430 007704 115 6 2792 0110 0308 4.548

435 008444 136 5 3276 0146 0272 3.897

440 009057 155 1 3700 0177 0246 3.559

445 009594 172 4 4090 0206 0226 3.353

450 010079 188 8 4457 0231 0211 3.217

460 010943 220 1 5145 0278 0188 3.055

470 011712 250 2 5792 0319 0170 2.968

480 012417 279 6 6412 0357 0157 2.921

490 013076 308 7 7011 0392 0146 2.898

500 01370 337 6 7596 0425 01374 2.889

510 01429 366 5 8168 0456 01298 2.891

520 01486 395 5 8730 .0485 01232 2.899

530 01542 424 5 9283 .0514 01175 2.911

540 01596 453 7 .9829 0541 01124 2.928

550 .0 01648 483 1 1 0368 0568 01079 2.947

560 .0 .01699 512 .7 1 0901 .0593 01037 2.968

570 .0 .01749 542 5 1 1429 .0618 01000 2.990

580 .0 .01799 572 .5 1 . 1951 .0643 00966 3.013

590 .0 .01847 602 .8 1 .2469 .0666 00934 3.037

600 .0 .01895 633 .4 1 .2982 0690 00905 3.062
-100-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 4 2 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001592 -503 2 -1 5068 888 871 2 096

250 001618 -482 1 -1 4206 821 820 2 139

260 001645 -460 5 -1 3363 753 770 2 180

270 001673 -438 6 -1 2535 687 721 2 221

280 001704 -416 1 -1 1720 623 673 2 266

290 001736 -393 2 -1 0915 561 626 2 316

300 001771 -369 7 -1 0120 502 581 2 370

310 001809 -345 7 -0 9333 446 536 2 429

320 001850 -321 -0 8551 392 493 2 493

330 001895 -295 7 -0 7773 341 451 2 562

340 001945 -269 7 -0 6996 293 411 2 638

350 002002 -242 8 -0 6219 248 371 2 721

360 002066 -215 1 -0 5438 206 333 2 816

370 002142 -186 4 -0 4651 1657 295 2 927

375 002185 -171 5 -0 4254 1468 277 2 992

380 002232 -156 4 -0 3852 1285 258 3 066

385 002286 -140 8 -0 3446 1108 240 3 152

390 002347 -124 8 -0 3032 0937 221 3 255

395 002418 -108 2 -0 2609 0773 202 3 385

400 002503 -90 8 -0 2172 0614 183 3 558

405 002609 -72 4 -0 1714 0462 163 3 810

410 002753 -52 3 -0 1222 0317 142 4 230

415 002973 -29 2 -0 0662 0181 118 5 134

420 003460 3 0109 0061 0877 8 689

425 005261 64 2 1557 0037 0500 10 381

430 006621 101 2 2424 0080 0374 5 651

435 007486 125 9 2995 0119 0317 4 410

440 008161 146 4 3465 0153 0281 3 862

445 008731 165 3883 0183 0256 3 557

450 009236 182 2 4269 0211 0236 3 366

460 010119 214 7 4982 0260 0207 3 145

470 010892 245 5 5646 0303 0187 3 030

480 011594 275 5 6277 0342 0171 2 967

490 012244 305 6885 0379 0159 2 934

500 01286 334 3 7476 0412 01486 2 918

510 01344 363 4 8053 0444 01400 2 914

520 01400 392 6 8619 0475 01326 2 918

530 01454 421 8 9176 0504 01262 2 929

540 01506 451 2 9725 0532 01205 2 943

550 01557 480 7 0266 0559 01155 2 960

560 01607 510 4 0802 0585 01109 2 979

570 01655 540 3 1331 0611 01068 3 000

580 01703 570 5 1855 0636 01031 3 023

590 01750 600 9 2375 0660 00996 3 046

600 01796 631 5 2890 0684 00964 3 070
-101-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 4 4 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001592 -503. -1 5073 893 0. 875 2 095

250 001617 -481. 9 -1 4211 826 0. 824 2 139

260 001644 -460. 3 -1 3368 758 0. 774 2 179

270 001673 -438. 4 -1 2541 692 0. 724 2 220

280. 001703 -416. -1 1726 628 0. 676 2 265

290 001735 -393. -1 0922 566 0. 629 2 315

300 001770 -369. 6 -1 0128 506 0. 583 2 368

310 001807 -345. 5 -0 9341 450 0. 539 2 427

320. 001848 -320. 9 -0 8560 396 0. 496 2 491

330. 001893 -295. 6 -0 7782 345 0. 454 2 559

340. 001943 -269. 6 -0 7007 297 0. 413 2 634

350 001999 -242 8 -0 6231 252 0. 374 2 716

360 002062 -215 2 -0 5452 210 0. 336 2 808

370 002136 -186 5 -0 4668 1701 0. 299 2 916

375 002178 -171 8 -0 4272 1512 280 2 979

380 002225 -156 7 -0 3872 1330 262 3 049

385 002277 -141 2 -0 3468 1154 243 3 130

390 002335 -125 3 -0 3057 0984 225 3 226

395 002403 -108 9 -0 2639 0821 207 3 345

400 002483 -91 7 -0 2208 0664 188 3 498

405 002581 -73 7 -0 1760 0514 169 3 710

410 002709 -54 4 -0 1286 0371 148 4 037

415 002890 -32 8 -0 0763 0238 127 4 632

420 003202 -6 6 -0 0134 0118 1017 6 114

425 004029 34 4 0834 0041 0699 10 676

430 005527 82 8 1967 0057 0468 7 481

435 006560 113 4 2676 0094 0376 5 168

440 007314 136 7 3209 0130 0324 4 270

445 007927 156 9 3664 0162 0290 3 815

450 008456 175 2 4074 0190 0265 3 546

460 009363 209 1 4818 0242 0229 3 250

470 010143 240 8 5499 0287 0205 3 100

480 010843 271 3 6143 0328 0186 3 018

490 011488 301 3 6760 0365 0172 2 972

500 01209 330 9 7358 0400 01604 2 948

510 01266 360 3 7940 0433 01507 2 939

520 01321 389 7 8511 0465 01424 2 939

530 01374 419 1 9072 0494 01352 2 946

540 01425 448 6 9623 0523 01290 2 958

550 01474 478 3 1 .0168 0551 01234 2 973

560 01522 508 2 1 .0705 0578 01184 2 991

570 01570 538 2 1 . 1237 0604 01138 3 Oil

580 .01616 568 5 1 . 1763 0629 01097 3 032

590 01661 599 1 .2284 0654 01060 3 055

600 .01706 629 7 1 .2800 0678 01025 3 078
-102-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 4 6 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001591 -502. 8 -1 5078 0. 898 878 2. 095

250 001617 -481. 7 -1 4217 0. 831 827 2. 138

260 001643 -460. 2 -1 3374 0. 763 777 2. 178

270 001672 -438 2 -1 2547 697 727 2. 219

280 001702 -415 8 -1 1732 0. 632 679 2. 264

290 001734 -392 9 -1 0929 570 632 2 313

300 001769 -369 4 -1 0135 511 586 2. 367

310 001806 -345 4 -0 9349 454 541 2 425

320 001846 -320 8 -0 8568 400 498 2 488

330 001891 -295 6 -0 7792 349 457 2 556

340 001940 -269 6 -0 7017 302 416 2 630

350 001995 -242 9 -0 6243 256 377 2 711

360 002058 -215 3 -0 5466 214 339 2 801

370 002131 -186 7 -0 4684 1745 302 2 906

380 002217 -157 -0 3891 1375 265 3 033

385 002268 -141 6 -0 3490 1200 247 3 110

390 002324 -125 8 -0 3082 1031 229 3 200

395 002389 -109 5 -0 2667 0869 211 3 309

400 002465 -92 6 -0 2242 0713 193 3 446

405 002557 -74 9 -0 1802 0564 174 3 629

410 002672 -56 1 -0 1341 0423 155 3 894

415 002827 -35 6 -0 0844 0291 134 4 326

420 003064 -12 1 -0 0280 0172 1118 5 183

425 003521 18 5 0443 0079 0861 7 325

430 004544 61 5 1448 0050 0598 8 773

435 005672 98 7 2310 0075 0451 6 184

440 006511 125 8 2929 0109 0376 4 807

445 007174 148 3431 0141 0330 4 139

450 007732 167 7 3871 0171 0298 3 763

460 008667 203 2 4650 0225 0253 3 369

470 009456 235 8 5352 0272 0224 3 177

480 010157 267 6009 0314 0203 3 072

490 010797 297 4 6636 0353 0186 3 013

500 01139 327 4 7241 0389 01729 2 981

510 01196 357 1 7830 0423 01619 2 965

520 01249 386 8 8405 0455 01526 2 961

530 01301 416 4 8970 0485 01446 2 965

540 01350 446 1 9525 0515 01377 2 974

550 01399 475 9 1 0072 0543 01315 2 987

560 01446 505 9 1 .0612 0570 01260 3 004

570 01492 536 1 . 1145 0597 01211 3 022

580 01537 566 4 1 . 1673 0623 01166 3 042

590 01581 597 1 .2196 0648 01125 3 064

600 .01624 627 8 1 .2714 0673 01087 3 086
-103-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 4 8 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001591 -502 6 -1 5083 904 0. 882 2 094

250 001616 -481 5 -1 4222 836 0. 830 2 137

260 001643 -460 -1 3379 768 0. 780 2 177

270 001671 -438 1 -1 2553 701 0. 730 2 218

280 001701 -415 6 -1 1738 637 0. 682 2 263

290 001733 -392 7 -1 0935 574 0. 634 2 312

300 001767 -369 3 -1 0142 515 0. 588 2 365

310 001804 -345 3 -0. 9356 458 0. 544 2 423

320 001845 -320 7 -0. 8577 404 0. 501 2 486

330 001889 -295 5 -0. 7801 354 0. 459 2 553

340 001938 -269 6 -0 7028 306 0. 419 2 626

350 001992 -242 9 -0. 6254 261 0. 380 2 706

360 002054 -215 3 -0. 5479 218 0. 342 2 794

370 002126 -186 8 -0 4699 1788 0. 305 2 896

380 002210 -157 2 -0. 3910 1419 0. 269 3 019

385 002259 -141 9 -0 3511 1245 0. 251 3 092

390 002314 -126 3 -0 3106 1077 0. 233 3 176

395 002376 -110 1 -0 2694 0915 0. 215 3 277

400 002449 -93 4 -0 2274 0761 197 3 401

405 002534 -76 -0 1841 0613 179 3 561

410 002640 -57 6 -0 1391 0474 160 3 782

415 002777 -37 9 -0 0913 0343 141 4 117

420 002971 -16 -0 0387 0225 1202 4 .693

425 003288 10 1 0230 0125 0977 5 852

430 003908 44 2 1028 0067 0735 7 716

435 004876 82 6 1916 0066 0546 7 044

440 005762 113 6 2624 0093 0440 5 441

445 006471 138 4 3183 0124 0377 4 529

450 007059 159 6 3659 0154 0335 4 020

460 008024 197 4479 0209 0280 3 505

470 008825 230 7 5204 0257 0245 3 262

480 009527 262 6 5876 0301 0220 3 131

490 010164 293 5 6514 0340 0201 3 057

500 01075 323 9 7127 0377 01860 3 015

510 01131 353 9 7721 0412 01736 2 993

520 01184 383 .8 8302 0445 01633 2 984

530 01234 413 .6 8870 .0476 01544 2 984

540 .0 01283 443 .5 9428 0506 01467 2 990

550 .0 01330 473 .5 .9978 0535 01399 3 001

560 .0 .01376 503 .6 1 .0521 .0563 01339 3 016

570 .0 .01420 533 .9 1 . 1056 .0590 01285 3 033

580 .0 .01464 564 .4 1 . 1586 .0616 01236 3 052

590 .0 .01507 595 .1 1 .2111 .0642 01191 3 073

600 .0 .01549 626 .0 1 .2630 .0667 01150 3 094
-104-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 5 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001590 -502 4 -1 5088 909 885 2 093

250 001615 -481 3 -1 4227 840 834 2 137

260 001642 -459 8 -1 3385 772 783 2 176

270 001670 -437 9 -1 2559 706 733 2 217

280 001700 -415 5 -1 1745 641 684 2 262

290 001732 -392 6 -1 0942 579 637 2 310

300 001766 -369 1 -1 0149 519 591 2 364

310 001803 -345 2 -0 9364 462 547 2 421

320 001843 -320 6 -0 8585 409 503 2 483

330 001887 -295 4 -0 7810 358 462 2 550

340 001935 -269 5 -0 7038 310 422 2 622

350 001989 -242 9 -0 6266 265 383 2 701

360 002050 -215 4 -0 5492 223 345 2 788

370 002120 -187 -0 4715 1831 308 2 887

380 002203 -157 5 -0 3929 1463 272 3 005

385 002251 -142 3 -0 3531 1289 254 3 075

390 002304 -126 7 -0 3129 1122 237 3 154

395 002364 -110 7 -0 2720 0961 219 3 248

400 002433 -94 1 -0 2304 0808 201 3 361

405 002514 -76 9 -0 1878 0661 184 3 503

410 002612 -58 9 -0 1436 0523 165 3 693

415 002735 -39 8 -0 0972 0393 147 3 963

420 002901 -19 -0 0473 0275 1275 4 385

425 003147 4 7 0086 0173 1070 5 121

430 003562 33 3 0755 0099 0851 6 372

435 004264 67 7 1552 0072 0652 7 041

440 005093 100 7 2306 0084 0515 5 996

445 005823 128 2922 0110 0432 4 956

450 006436 151 3437 0139 0378 4 312

460 007430 190 5 4304 0194 0310 3 658

470 008242 225 4 5055 0243 0268 3 356

480 008947 258 1 5743 0288 0239 3 195

490 009582 289 6 6392 0329 0217 3 103

500 01017 320 3 7014 0367 01998 3 050

510 01071 350 7 7615 0402 01859 3 021

520 01123 380 8 8200 0436 01744 3 007

530 01173 410 9 8772 0468 01646 3 003

540 01220 440 9 9334 0498 01561 3 007

550 01266 471 1 9887 0528 01486 3 016

560 01311 501 3 1 0432 0556 01420 3 029

570 01355 531 7 1 0970 0584 01361 3 045

580 01397 562 3 1 1502 0610 01308 3 062

590 01439 593 1 1 2028 0637 01260 3 082

600 01480 624 1 1 2549 0662 01215 3 103
-105-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 5 5 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001589 -501. 9 -1 5100 0. 922 0. 894 2. 092

250 001614 -480. 8 -1 4240 0. 853 0. 842 2 135

260 001640 -459. 3 -1 3398 0. 784 0. 790 2 174

270. 001668 -437. 4 -1 2573 0. 717 0. 740 2 215

280. 001698 -415. -1 1760 0. 652 0. 691 2 259

290. 001729 -392. 2 -1 0958 0. 589 0. 643 2 307

300. 001763 -368. 8 -1 0167 0. 530 0. 597 2 360

310. 001799 -344. 9 -0 9383 0. 473 0. 553 2 416

320. 001839 -320. 4 -0 8606 0. 419 0. 510 2 477

330 001882 -295 2 -0 7833 0. 368 0. 468 2 543

340. 001929 -269 4 -0 7063 0. 320 0. 428 2 613

350. 001982 -242 9 -0 6294 275 0. 389 2 689

360. 002041 -215 5 -0 5525 233 0. 352 2 772

370 002108 -187 3 -0 4752 1936 0. 315 2 866

380 002187 -158 1 -0 3973 1571 280 2 974

385 002232 -143 -0 3579 1398 263 3 037

390 002281 -127 6 -0 3183 0. 1232 0. 245 3 107

395 002337 -111 9 -0 2782 1073 0. 228 3 186

400 002399 -95 7 -0 2375 0921 0. 211 3 279

405 002470 -79 -0 1960 0777 194 3 391

410 002554 -61 7 -0 1535 0640 177 3 529

415 002654 -43 6 -0 1096 0512 160 3 707

420 002779 -24 5 -0 0638 0395 1428 3 948

425 002941 -3 9 -0 0151 0289 1250 4 291

430 003166 18 8 0380 0201 1070 4 790

435 003495 44 4 0971 0138 0890 5 431

440 003966 72 8 1622 0106 0727 5 836

445 004543 101 7 2273 0104 0599 5 573

450 005127 128 1 2865 0119 0509 4 989

460 006145 173 1 3853 0165 0398 4 085

470 006977 211 4 4677 0213 0334 3 621

480 007687 246 3 5412 0259 0291 3 373

490 008316 279 3 6092 0302 0261 3 232

500 008889 311 2 6736 0342 0238 3 148

510 009421 342 4 7354 0379 0219 3 098

520 009921 373 2 .7953 0414 0204 3 069

530 .0 010396 403 9 8536 0448 0192 3 055

540 .0 010850 434 4 .9107 .0480 0181 3 051

550 .0 011288 465 .9667 .0511 0172 3 054

560 .0 .011711 495 .6 1 .0219 .0540 0163 3 062

570 .0 .012123 526 3 1 .0762 .0569 0156 3 074

580 .0 .012524 557 .2 1 . 1299 .0597 0150 3 089

590 .0 .012916 588 .2 1 .1830 .0624 0144 3 105

600 .0 .013301 619 .5 1 .2354 .0650 0138 3 124
-106-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 6.0 MPa

T V H s DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001587 -501 4 -1 5113 935 903 2 091

250 001612 -480 3 -1 4253 865 850 2 133

260 001638 -458 9 -1 3412 796 798 2 173

270 001666 -437 -1 2587 728 747 2 213

280 001695 -414 6 -1 1775 663 698 2 256

290 001727 -391 8 -1 0975 600 650 2 304

300 001760 -368 4 -1 0184 540 604 2 356

310 001796 -344 6 -0 9402 483 559 2 412

320 001835 -320 1 -0 8626 429 516 2 472

330 001877 -295 -0 7856 378 474 2 536

340 001923 -269 3 -0 7088 330 434 2 604

350 001975 -242 8 -0 6322 285 396 2 678

360 002032 -215 6 -0 5556 243 358 2 758

370 002097 -187 6 -0 4787 204 322 2 847

380 002172 -158 6 -0 4014 168 288 2 948

385 002215 -143 7 -0 3625 150 270 3 004

390 002261 -128 5 -0 3233 134 254 3 067

395 002312 -112 9 -0 2838 118 237 3 137

400 002369 -97 -0 2438 103 220 3 216

405 002433 -80 7 -0 2032 089 204 3 307

410 002507 -63 9 -0 1619 075 188 3 415

415 002593 -46 5 -0 1197 062 172 3 546

420 002695 -28 3 -0 0762 0508 1555 3 710

425 002819 -9 2 -0 0311 0401 1392 3 919

430 002977 11 1 0164 0307 1230 4 192

435 003183 32 9 0668 0230 1070 4 535

440 003458 56 5 1209 0174 0916 4 905

445 003815 81 8 1780 0143 0777 5 137

450 004242 107 5 2354 0133 0662 5 075

460 005142 155 3 3405 0154 0505 4 441

470 005953 196 8 4298 0194 0412 3 896

480 006655 234 5081 0238 0353 3 567

490 007276 268 7 5796 0281 0311 3 372

500 007837 301 8 6465 0321 0280 3 254

510 008355 334 7101 0360 0256 3 181

520 008838 365 5 7715 0396 0237 3 136

530 009295 396 8 8310 0431 0221 3 110

540 009731 427 9 8890 0464 0208 3 097

550 010149 458 8 9459 0496 0196 3 094

560 010553 489 8 1 0017 0526 0186 3 096

570 010944 520 9 1 0566 0556 0178 3 104

580 011324 552 1 1 1108 0584 0170 3 115

590 011695 583 4 1 1643 0612 0163 3 129

600 012058 614 9 1 2172 0639 0156 3 146
-107-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 6.5 MPa

T V H s DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001586 -500 9 -1 5125 948 0. 912 2 089

250 001611 -479 8 -1 4266 877 0. 858 2 132

260 001637 -458 4 -1 3425 807 0. 805 2 171

270 001664 -436 5 -1 2602 739 0. 754 2 211

280 001693 -414 2 -1 1790 674 0. 704 2 254

290 001724 -391 4 -1 0991 610 0. 656 2 301

300 001757 -368 1 -1 0202 550 0. 610 2 352

310 001793 -344 2 -0 9421 493 0. 565 2 407

320 001831 -319 8 -0 8647 439 0. 522 2 466

330 001872 -294 8 -0 7877 388 0. 480 2 529

340 001918 -269 1 -0 7112 340 440 2 596

350 001968 -242 8 -0 6349 295 402 2 668

360 002023 -215 7 -0 5586 253 365 2 745

370 002086 -187 8 -0 4822 214 329 2 829

380 002158 -159 -0 4054 1778 295 2 924

390 002242 -129 2 -0 3280 1443 262 3 033

395 002290 -113 8 -0 2890 1286 245 3 095

400 002343 -98 2 -0 2496 1137 229 3 164

405 002402 -82 1 -0 2097 0995 213 3 242

410 002468 -65 7 -0 1694 0860 198 3 330

415 002543 -48 7 -0 1283 0734 182 3 434

420 002630 -31 3 -0 0864 0616 167 3 556

425 002733 -13 1 -0 0435 0508 1513 3 703

430 002857 5 9 0009 0411 1362 3 881

435 003008 25 8 0471 0328 1214 4 095

440 003197 46 9 0953 0260 1070 4 335

445 003435 69 2 1457 0210 0935 4 563

450 003725 92 5 1976 0179 0813 4 702

455 004061 116 2497 0166 0710 4 688

460 004424 139 2 3003 0167 0625 4 538

470 005150 182 5 3934 0190 0503 4 105

480 005819 221 7 4759 0227 0423 3 749

490 006420 257 9 5506 0266 0368 3 514

500 006966 292 3 6201 0306 0328 3 363

510 007468 325 4 6857 0344 0298 3 267

520 007936 357 8 7485 0381 0273 3 206

530 008376 389 7 8092 0416 0254 3 167

540 008795 421 3 8683 .0450 0237 3 145

550 009196 452 7 9259 .0483 0223 3 135

560 009581 484 . 1 9825 .0514 0211 3 132

570 009954 515 5 1 0380 .0545 0200 3 135

580 010316 547 .0 1 0927 .0574 0191 3 143

590 010669 578 .6 1 1467 .0603 0183 3 154

600 011013 610 .3 1 2000 .0631 0175 3 167
-108-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 7. MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001585 -500. 4 _ "]_ 5137 0. 960 0. 920 2. 088

250 001609 -479. 4 -1

.

4278 0. 889 0. 865 2. 130

260 001635 -457. 9 -1

.

3439 0. 819 0. 812 2. 169

270 001662 -436. 1 -1

,

2616 0. 750 0. 761 2. 208

280 001691 -413. 8 -1 1805 0. 684 711 2 251

290 001722 -391 -1 1007 0. 621 662 2 298

300 001754 -367. 7 -1 0219 0. 561 616 2 348

310 001789 -343 9 -0 9439 0. 503 571 2 403

320 001827 -319 5 -0 8666 449 528 2 461

330 001868 -294 6 -0 7899 0. 398 486 2 523

340 001912 -269 -0 7136 350 446 2 589

350 001961 -242 7 -0 6375 305 408 2 658

360 002015 -215 7 -0 5615 263 371 2 733

370 002076 -188 -0 4855 224 336 2 814

380 002145 -159 4 -0 4092 1879 302 2 903

390 002225 -129 8 -0 3325 1545 269 3 004

395 002270 -114 6 -0 2938 1389 253 3 060

400 002320 -99 1 -0 2549 1240 237 3 121

405 002374 -83 3 -0 2157 1098 222 3 189

410 002434 -67 2 -0 1761 0964 206 3 264

415 002502 -50 6 -0 1359 0838 191 3 350

420 002579 -33 6 -0 0952 0720 176 3 447

425 002667 -16 1 -0 0537 0611 1619 3 559

430 002770 2 1 -0 0113 0513 1476 3 688

435 002891 20 9 0323 0425 1336 3 837

440 003036 40 5 0771 0350 1200 4 003

445 003211 61 1234 0290 1071 4 174

450 003420 82 3 1709 0245 0950 4 322

455 003666 104 1 2193 0216 0841 4 408

460 003943 126 2 2676 0201 0747 4 405

470 004548 169 4 3604 0202 0601 4 184

480 005154 209 7 4453 0227 0501 3 882

490 005721 247 3 5228 0260 0432 3 638

500 006243 282 8 5945 0297 0381 3 467

510 006727 316 9 6620 0334 0343 3 352

520 007177 350 1 7264 0370 0313 3 275

530 007602 382 6 7883 0406 0289 3 225

540 008004 414 7 8483 0440 0269 3 194

550 008389 446 6 9069 0473 0252 3 176

560 008758 478 4 9641 0505 0237 3 168

570 009115 510 2 1 0203 0536 0225 3 166

580 009460 541 9 1 0755 0566 0213 3 170

590 009797 573 8 1 1299 0595 0204 3 178

600 010124 605 8 1 1836 0623 0195 3 190
-109-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 7 5 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001583 -499 9 -1 5149 0. 973 0. 929 2. 087

250 001608 -478 9 -1 4291 0. 901 0. 873 2. 129

260 001633 -457 4 -1 3452 0. 830 0. 819 2. 167

270 001660 -435 6 -1 2630 0. 761 0. 767 2. 206

280 001689 -413 3 -1 1820 695 0. 717 2. 249

290 001719 -390 6 -1 1023 631 0. 668 2. 295

300 001752 -367 3 -1 0236 571 0. 622 2. 345

310 001786 -343 6 -0 9457 513 0. 577 2. 399

320 001823 -319 3 -0 8686 0. 459 0. 534 2. 456

330 001863 -294 4 -0 7920 408 0. 492 2. 517

340 001907 -268 8 -0 7159 360 452 2 581

350 001955 -242 6 -0 6400 315 414 2 649

360 002008 -215 7 -0 5643 273 378 2 722

370 002067 -188 1 -0 4887 234 342 2. 799

380 002133 -159 7 -0 4129 1978 308 2. 884

390 002210 -130 3 -0 3367 1645 276 2 978

400 002299 -100 -0 2599 1340 245 3 085

405 002349 -84 4 -0 2212 1199 230 3 145

410 002405 -68 5 -0 1822 1065 215 3 211

415 002467 -52 2 -0 1428 0939 200 3 284

420 002536 -35 6 -0 1029 0821 186 3 364

425 002614 -18 5 -0 0625 0712 172 3 454

430 002702 -1 -0 0215 0611 1578 3 556

435 002804 17 1 0203 0521 1443 3 668

440 002922 35 8 0630 0442 1313 3 791

445 003061 55 1 1066 0374 1189 3 920

450 003223 75 1511 0320 1071 4 043

455 003410 95 5 1964 0279 0962 4 142

460 003624 116 4 2421 0252 0863 4 197

465 003860 137 4 2875 0236 0776 4 196

470 004113 158 3 3322 0230 0702 4 142

480 004638 198 8 4175 0239 0584 3 944

490 005156 237 2 4966 0264 0500 3 729

500 005647 273 7 5702 0295 0438 3 556

510 006107 308 6 6394 0329 0392 3 429

520 006538 342 4 7051 0364 0355 3 341

530 006945 375 6 7682 0399 0326 3 281

540 007332 408 2 8292 0433 0302 3 242

550 007701 440 6 .8886 0466 0282 3 217

560 008055 472 8 .9465 0498 0265 3 203

570 008396 504 9 1 .0033 0529 0250 3 197

580 008727 536 9 1 .0590 0559 0237 3 198

590 .009048 569 1 1 .1139 0589 0226 3 203

600 .009361 601 3 1 .1680 0618 0216 3 211
-110-

Table A2.(coiit.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 8 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001582 -499 4 -1 5161 985 937 2 086

250 001606 -478 4 -1 4303 913 880 2 127

260 001632 -457 -1 3465 841 826 2 165

270 001659 -435 2 -1 2644 772 774 2 204

280 001687 -412 9 -1 1835 705 723 2 246

290 001717 -390 2 -1 1038 642 674 2 292

300 001749 -367 -1 0252 581 628 2 342

310 001783 -343 2 -0 9475 523 583 2 395

320 001820 -319 -0 8705 469 539 2 452

330 001859 -294 1 -0 7941 417 498 2 512

340 001902 -268 6 -0 7182 369 458 2 575

350 001949 -242 5 -0 6425 325 420 2 641

360 002000 -215 7 -0 5671 283 384 2 711

370 002058 -188 2 -0 4918 244 348 2 786

380 002122 -159 9 -0 4163 208 315 2 866

390 002195 -130 8 -0 3407 1743 283 2 955

400 002279 -100 7 -0 2646 1439 252 3 054

405 002327 -85 3 -0 2263 1298 237 3 108

410 002379 -69 6 -0 1878 1164 222 3 167

415 002436 -53 6 -0 1490 1038 208 3 230

420 002499 -37 2 -0 1099 0919 194 3 299

425 002569 -20 5 -0 0703 0809 180 3 375

430 002647 -3 4 -0 0303 0708 1670 3 457

435 002736 14 1 0102 0615 1540 3 547

440 002836 32 1 0513 0533 1415 3 644

445 002951 50 6 0931 0461 1294 3 745

450 003083 69 6 1356 0400 1179 3 844

455 003233 89 1 1786 0351 1071 3 934

460 003404 109 2220 0314 0971 4 002

465 003593 129 1 2656 0288 0881 4 038

470 003799 149 3 3088 0272 0801 4 037

480 004245 189 3 3930 0264 0670 3 937

490 004706 227 9 4726 0277 0572 3 777

500 005158 264 9 5474 0301 0499 3 621

510 005589 300 5 6179 0331 0444 3 494

520 005999 335 6848 0363 0401 3 400

530 006387 368 7 7490 0396 0366 3 333

540 006757 401 9 8109 0429 0338 3 287

550 007110 434 7 8711 0461 0314 3 256

560 007450 467 2 9297 0493 0294 3 238

570 007777 499 7 9870 0525 0277 3 228

580 008094 532 1 0433 0555 0262 3 .225

590 008401 564 4 1 0987 0585 0249 3 227

600 008701 596 9 1 1532 0614 0237 3 233
-IllTable A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 8.,5 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240,,0 0..001581 -498. 9 -1 ,,5173 0. 998 0. 945 2.,084

250,.0 0,,001605 -477. 9 -1,,4316 0. 924 0. 888 2.,126

260,.0 0,,001630 -456. 5 -1.,3478 0. 853 0. 833 2.,164

270,.0 0,,001657 -434. 7 -1.,2657 0. 783 0. 780 2.,202

280,.0 0.,001685 -412. 5 -1,, 1849 0.,716 0. 729 2,.244

290,.0 0,.001715 -389. 8 -1., 1054 0. 652 0. 680 2,.289

300,.0 0,,001746 -366. 6 -1.,0269 0. 591 0. 633 2,.338

310,.0 0,,001780 -342. 9 -0.,9493 0. 533 0. 588 2..391

320.,0 0,,001816 -318. 7 -0.,8724 0. 478 0.,545 2,.447

330,.0 0,,001855 -293. 9 -0. 7962 0.,427 0.,503 2..506

340.,0 0,.001897 -268. 4 -0.,7204 0. 379 0.,464 2,.568

350.,0 0,,001943 -242. 4 -0.,6450 0.,334 0. 426 2,.633

360..0 0,.001993 -215. 7 -0.,5698 0. 292 0. 389 2,.701

370.,0 0,.002049 -188.,3 -0.,4947 0. 253 0.,354 2..773

380.,0 0,.002111 -160., 1 -0..4197 0.,217 0.,321 2,.851

390.,0 0,.002181 -131..2 -0,.3446 0. 1839 0.,289 2,.934

400..0 0,.002262 -101..4 -0,.2691 0., 1535 0.,259 3..026

405..0 0,.002307 -86., 1 -0,.2311 0., 1394 0.,244 3..076

410.,0 0,.002355 -70,.5 -0,.1930 0., 1260 0.,230 3,.129

415.,0 0,.002408 -54,.7 -0,.1547 0., 1134 0..216 3,.186

420..0 0,.002466 -38,.6 -0,.1162 0., 1015 0..202 3,.246

425..0 0,.002530 -22,,2 -0,.0774 0.,0904 0..189 3,.311

430,.0 0..002601 -5,.5 -0,.0382 0,.0802 0..1756 3,.381

435,.0 0..002679 11,.7 0,.0014 0,.0708 0..1629 3,.456

440,.0 0..002767 29,.2 0..0414 0,.0623 0..1507 3,.535

445,,0 0..002866 47,. 1 0..0818 0,.0547 0,.1389 3,.618

450,,0 0..002978 65,.4 .1228 0,.0481 0,.1276 3,.700

455.,0 0..003103 84,. 1 0.. 1641 0,.0426 0,.1170 3,.777

460,,0 0..003243 103,.2 0,.2058 0,.0382 0,.1070 3,.843

465,,0 0..003399 122,.5 0,.2477 0,.0347 0,.0979 3,.891

470,,0 0..003570 142,. 1 0,.2895 0,.0323 0,.0895 3,.915

480,.0 0..003946 181,.2 0,.3718 0,.0299 0,.0755 3,.886

490,,0 0..004350 219,.6 0,.4511 0,.0299 0,.0646 3,.784

500,.0 0..004758 256,.9 .5263 0,.0315 0,.0563 3,.658

510,.0 0..005158 292,.9 .5976 0,.0339 0,.0499 3..543

520..0 0..005543 327.,9 .6656 0,.0367 0,,0448 3..450

530,.0 0..005911 362., 1 .7307 0,.0398 0..0408 3..379

540..0 .006264 395..7 .7934 0.,0429 0,.0375 3..329

550..0 .006602 428..9 .8543 0.,0461 0..0348 3,.293

560..0 .006926 461..8 .9136 0..0492 0,,0325 3..271

570..0 .007240 494,.6 .9715 0..0523 0..0305 3..257

580..0 .007543 527,.2 1 .0283 0,,0553 0..0288 3..251

590 .0 .007838 559 .9 1 .0840 0..0583 0..0273 3,.250

600 .0 .008125 592 .6 1 .1389 0,,0612 0,.0260 3,.254
-112-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 9 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001579 -498 4 -1 5185 1. 010 0. 953 2 083

250 001603 -477 4 -1 4328 0. 936 0. 895 2 124

260 001629 -456 -1 3491 0. 864 840 2 162

270 001655 -434 3 -1 2671 794 786 2 200

280 001683 -412 -1 1864 0. 726 735 2 242

290 001712 -389 4 -1 1069 0. 662 686 2 287

300 001744 -366 2 -1 0285 601 639 2 335

310 001777 -342 5 -0 9510 543 594 2 388

320 001812 -318 4 -0 8743 488 550 2 443

330 001851 -293 6 -0 7982 437 509 2 501

340 001892 -268 2 -0 7226 388 469 2 562

350 001937 -242 3 -0 6473 343 431 2 625

360 001986 -215 7 -0 5724 301 395 2 692

370 002041 -188 3 -0 4977 262 360 2 762

380 002101 -160 3 -0 4230 226 327 2 836

390 002169 -131 5 -0 3482 1933 296 2 916

400 002245 -101 9 -0 2733 1630 266 3 002

405 002288 -86 8 -0 2357 1489 251 3 048

410 002334 -71 4 -0 1980 1355 237 3 097

415 002384 -55 8 -0 1601 1228 223 3 148

420 002438 -39 9 -0 1220 1109 210 3 202

425 002496 -23 7 -0 0838 0998 196 3 260

430 002561 -7 2 -0 0453 0894 1835 3 321

435 002632 9 6 -0 0065 0798 1712 3 385

440 002710 26 7 0326 0711 1592 3 452

445 002797 44 1 0721 0633 1476 3 521

450 002894 61 9 1118 0564 1366 3 590

455 003002 80 1 1519 0504 1261 3 657

460 003121 98 5 1923 0453 1162 3 717

465 003252 117 3 2328 0413 1070 3 767

470 003396 136 2 2733 0381 0985 3 802

480 003716 174 4 3537 0343 0838 3 815

490 004068 212 4 4319 0330 0720 3 761

500 004434 249 6 5071 0336 0628 3 670

510 004800 285 9 5789 0353 0556 3 573

520 005159 321 2 6475 0377 0498 3 487

530 005506 355 8 7133 0404 0452 3 418

540 005840 389 7 7768 0433 0415 3 365

550 006162 423 3 8383 0463 0383 3 327

560 006472 456 5 8981 0493 0357 3 301

570 006772 489 6 9566 0523 0335 3 285

580 007062 522 5 1 0138 0553 0315 3 276

590 007345 555 4 1 0700 0583 0298 3 273

600 007619 588 4 1 1253 0612 0283 3 275
-113-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 9 5 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001578 -497 9 — ]_ 5196 1 022 961 2 082

250 001602 -476 9 -1 4341 948 902 2 123

260 001627 -455 5 -1 3504 875 846 2 160

270 001653 -433 8 -1 2685 804 793 2 198

280 001681 -411 6 -1 1878 737 741 2 239

290 001710 -388 9 — 1 1084 672 692 2 284

300 001741 -365 8 — 1 0301 610 644 2 332

310 001774 -342 2 -0 9527 552 599 2 384

320 001809 -318 -0 8761 498 556 2 439

330 001847 -293 3 -0 8002 446 514 2 496

340 001888 -268 -0 7247 398 475 2 556

350 001932 -242 1 -0. 6497 353 437 2 618

360 001980 -215 6 -0 5750 311 401 2 683

370 002033 -188 4 -0. 5005 272 366 2 751

380 002091 -160 5 -0. 4261 236 333 2 823

390 002156 -131 8 -0. 3518 203 302 2 899

400 002230 -102 4 -0. 2773 1723 272 2 980

405 002271 -87 4 -0. 2400 1581 258 3 023

410 002314 -72 1 -0. 2026 1447 244 3 068

415 002361 -56 6 -0. 1651 1321 230 3 115

420 002412 -40 9 -0. 1275 1201 216 3 165

425 002466 -25 -0 0897 1089 204 3 216

430 002526 -8 7 -0 0517 0984 1910 3 270

435 002591 7 8 -0. 0136 0887 1789 3 327

440 002662 24 6 0248 0799 1671 3 385

445 002740 41 7 0635 0718 1557 3 445

450 002825 59 1 1023 0646 1449 3 505

455 002920 76 8 1414 0582 1345 3 563

460 003024 94 8 1807 0527 1247 3 617

465 003137 113 2201 0481 1155 3 665

470 003261 131 4 2595 0444 1069 3 703

480 003536 168 7 3380 0393 0918 3 739

490 003843 206 1 4151 0369 0793 3 720

500 004169 243 1 4897 0364 0693 3 662

510 004503 279 4 5616 0374 0613 3 586

520 004834 314 9 6306 0392 0549 3 512

530 005159 349 8 6969 0415 0498 3 447

540 005474 384 7610 0441 0455 3 395

550 005780 417 9 8230 0469 0420 3 357

560 006076 451 4 8834 0498 0390 3 329

570 006362 484 8 9424 0527 0365 3 310

580 006640 518 1 0000 0556 0343 3 299

590 006911 551 1 1 0566 0585 0324 3 294

600 007174 584 3 1 1123 0613 0307 3 294
-114-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P =10.0 MPa

T V H s DP/DD DP/DT CP

Deg K mS/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001577 -497 4 -1 5208 1 034 968 2 081

250 001601 -476 4 -1 4353 959 909 2 122

260 001626 -455 1 -1 3517 886 853 2 159

270 001652 -433 3 -1 2698 815 799 2 196

280 001679 -411 2 -1 1892 747 747 2 237

290 001708 -388 5 -1 1099 682 697 2 281

300 001738 -365 4 -1 0317 620 650 2 329

310 001771 -341 8 -0 9544 562 604 2 381

320 001806 -317 7 -0 8780 507 561 2 435

330 001843 -293 1 -0 8021 455 519 2 491

340 001883 -267 8 -0 7268 407 480 2 550

350 001926 -242 -0 6520 362 442 2 612

360 001973 -215 5 -0 5775 320 406 2 675

370 002025 -188 4 -0 5032 281 372 2 741

380 002082 -160 6 -0 4292 245 339 2 811

390 002145 -132 1 -0 3552 212 308 2 883

400 002216 -102 8 -0 2812 1814 278 2 961

405 002255 -87 9 -0 2441 1673 264 3 001

410 002296 -72 8 -0 2070 1539 250 3 043

415 002340 -57 4 -0 1698 1411 236 3 087

420 002388 -41 9 -0 1326 1291 223 3 132

425 002439 -26 1 -0 0952 1179 210 3 179

430 002495 -10 -0 0577 1073 1981 3 228

435 002555 6 3 -0 0201 0975 1861 3 279

440 002620 22 8 0177 0885 1745 3 330

445 002690 39 6 0557 0802 1633 3 383

450 002768 56 7 0938 0727 1526 3 436

455 002852 74 1321 0661 1424 3 487

460 002944 91 6 1705 0602 1327 3 536

465 003044 109 4 2090 0552 1235 3 581

470 003152 127 4 2476 0510 1149 3 619

480 003393 163 9 3244 0448 0994 3 666

490 003662 200 7 4002 0413 0865 3 672

500 003953 237 3 4741 0399 0758 3 640

510 004255 273 5 5458 0400 0672 3 585

520 004559 309 1 6149 0412 0602 3 525

530 004862 344 1 6816 0430 0544 3 468

540 005158 378 7 7460 0453 0497 3 419

550 005448 412 8 8086 0478 0458 3 381

560 005729 446 5 8694 0505 0425 3 353

570 006002 480 1 9287 0533 0396 3 333

580 006268 513 5 9868 0561 0372 3 320

590 006527 546 9 1 0438 0589 0351 3 314

600 006779 580 3 1 0998 0617 0332 3 312
-115-

Table A2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P =11 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001575 -496 4 -1 5231 1 058 984 2 079

250 001598 -475 4 -1 4377 982 923 2 119

260 001622 -454 1 -1 3542 908 866 2 156

270 001648 -432 4 -1 2725 836 811 2 193

280 001675 -410 3 -1. 1920 767 758 2 233

290 001704 -387 7 -1. 1129 702 708 2 277

300 001734 -364 6 -1. 0349 639 660 2 324

310 001765 -341 1 -0. 9578 581 615 2 374

320 001799 -317 1 -0. 8815 526 571 2 427

330 001835 -292 5 -0. 8060 474 530 2 482

340 001874 -267 3 -0. 7310 425 490 2 540

350 001916 -241 6 -0. 6565 380 452 2 599

360 001961 -215 3 -0. 5823 338 416 2 660

370 002011 -188 3 -0. 5086 299 382 2 723

380 002065 -160 7 -0. 4350 263 350 2 788

390 002124 -132 5 -0. 3617 230 319 2 856

400 002190 -103 5 -0. 2885 199 290 2 927

410 002263 -73 9 -0. 2152 1716 262 3 001

420 002346 -43 4 -0. 1419 1468 236 3 079

430 002441 -12 2 -0. 0685 1246 211 3 161

440 002549 19 9 0. 0052 1053 1882 3 245

450 002674 52 8 0. 0791 0889 1668 3 331

460 002819 86 6 0. 1533 0753 1472 3 414

470 002986 121 2 0. 2276 0646 1294 3 488

480 003177 156 4 3017 0567 1137 3 542

490 003391 192 3752 0514 1001 3 572

500 003624 227 8 4475 0482 0885 3 575

510 003872 263 5 5182 0468 0788 3 556

520 004128 299 5870 0466 0707 3 523

530 004388 334 1 6539 0474 0640 3 485

540 004648 368 9 7188 0489 0583 3 448

550 004905 403 3 7819 0507 0536 3 416

560 005157 437 4 8434 0529 0496 3 390

570 005405 471 4 9034 0553 0462 3 370

580 005647 505 .2 9621 0578 0432 3 357

590 005883 538 9 1 0197 0604 0406 3 348

600 .0 006115 572 .6 1 0763 0630 0384 3 345
-116-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 12 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001572 -495. 3 -1. 5254 1. 082 998 2.077

250 001595 -474. 4 -1. 4401 1. 004 0. 937 2.117

260 001620 -453. 1 -1. 3567 0. 929 878 2.153

270 001645 -431 5 -1 2751 856 822 2.189

280 001671 -409. 4 -1 1948 0. 787 769 2.229

290 001699 -386. 8 -1 1158 721 719 2.272

300 001729 -363 8 -1 0379 659 671 2.318

310 001760 -340 4 -0 9611 600 625 2.368

320 001793 -316 4 -0 8850 544 581 2.420

330 001828 -291 9 -0 8097 492 539 2.474

340 001866 -266 8 -0 7350 443 500 2.530

350 001907 -241 2 -0 6608 398 462 2.587

360 001950 -215 -0 5870 356 426 2.646

370 001997 -188 2 -0 5136 317 392 2.707

380 002049 -160 8 -0 4406 280 360 2.769

390 002105 -132 7 -0 3678 247 330 2.833

400 002166 -104 1 -0 2952 217 301 2.899

410 002235 -74 7 -0 2228 1889 273 2.966

420 002311 -44 6 -0 1504 1639 248 3.037

430 002396 -13 9 -0 0781 1415 223 3.109

440 002492 17 6 -0 0057 1218 201 3.182

450 002601 49 8 0667 1047 1796 3.256

460 002725 82 8 1391 0904 1602 3.327

470 002865 116 5 2114 0786 1426 3.392

480 003023 150 7 2834 0694 1267 3.446

490 003198 185 4 3550 0626 1127 3.485

500 003390 220 4 4257 0579 1005 3.505

510 003596 255 6 4952 0550 0900 3.508

520 003812 290 7 5633 0536 0811 3.497

530 004035 325 6 6299 0533 0735 3.478

540 004260 360 4 6948 0538 0671 3.455

550 004487 394 9 7581 0549 0616 3.432

560 004712 429 3 8199 0565 0570 3.412

570 004935 463 5 8804 0584 0530 3.395

580 005154 497 6 9396 0605 0495 3.383

590 005370 531 6 9977 0628 0464 3.375

600 005582 565 6 1 0547 0651 0438 3.371
-117-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 13 MPa

T V H s DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001570 -494 3 -1 5277 1 106 1. 013 2 075

250 001593 -473 4 -1 4425 1 027 0. 950 2 114

260 001617 -452 1 -1 3592 950 890 2 150

270 001642 -430 5 -1 2777 877 834 2 186

280 001668 -408 5 -1 1975 807 780 2 225

290 001695 -386 -1 1187 740 729 2 268

300 001724 -363 -1 0410 677 681 2 313

310 001755 -339 6 -0 9643 618 635 2 362

320 001787 -315 7 -0 8884 562 591 2 413

330 001822 -291 2 -0 8133 510 549 2 466

340 001858 -266 3 -0 7388 461 509 2 521

350 001897 -240 8 -0 6649 416 472 2 577

360 001939 -214 7 -0 5915 373 436 2 634

370 001985 -188 -0 5185 334 402 2 693

380 002034 -160 7 -0 4459 298 370 2 752

390 002087 -132 9 -0 3736 264 340 2 813

400 002145 -104 4 -0 3016 234 311 2 874

410 002209 -75 3 -0 2298 206 284 2 938

420 002279 -45 6 -0 1582 1805 258 3 002

430 002357 -15 2 -0 0868 1579 234 3 067

440 002444 15 8 -0 0154 1378 212 3 133

450 002541 47 5 0557 1203 191 3 .198

460 002649 79 9 1268 1052 1721 3 .261

470 002770 112 8 1976 0927 1546 3 320

480 002905 146 3 2681 0825 1387 3 372

490 003054 180 3 3381 0745 1244 3 413

500 003216 214 6 4074 0686 1118 3 441

510 003390 249 2 4758 0644 1008 3 457

520 003574 283 9 5431 0618 0912 3 462

530 003765 318 5 6091 0604 0830 3 457

540 003962 353 2 6737 0599 0759 3 447

550 004161 387 7 7370 0602 0697 3 434

560 004361 422 1 7990 0611 0645 3 421

570 004561 456 4 8596 0624 0599 3 410

580 004759 490 7 9191 0641 0559 3 401

590 004956 524 9 9775 0659 0524 3 395

600 005149 559 1 1 .0349 0679 0493 3 392
-118-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 14 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001568 -493 3 -1. 5300 1. 129 1. 027 2.073

250 001590 -472. 4 -1. 4448 1. 049 963 2. 112

260 001614 -451 2 -1. 3616 971 902 2.147

270 001639 -429 6 -1. 2802 897 845 2. 183

280 001664 -407 5 -1. 2002 826 791 2.221

290 001691 -385 1 -1. 1215 759 739 2.263

300 001720 -362 2 -1. 0439 696 690 2.308

310 001750 -338 8 -0. 9674 636 644 2.356

320 001781 -315 -0. 8918 580 600 2.407

330 001815 -290 6 -0. 8169 528 558 2.459

340 001851 -265 7 -0 7426 479 518 2.512

350 001889 -240 3 -0 6690 433 481 2.567

360 001929 -214 3 -0 5958 390 445 2.623

370 001973 -187 7 -0 5232 351 411 2.680

380 002020 -160 6 -0 4509 315 379 2.737

390 002071 -133 -0 3791 281 349 2.795

400 002126 -104 7 -0 3075 250 321 2.853

410 002186 -75 8 -0 2363 222 294 2.913

420 002251 -46 4 -0 1654 197 268 2.973

430 002324 -16 3 -0 0947 1739 245 3.033

440 002403 14 4 -0 0242 1535 223 3.093

450 002490 45 7 0460 1355 202 3.153

460 002587 77 5 1159 1200 1831 3.210

470 002694 109 9 1856 1067 1656 3.264

480 002812 142 9 2549 0957 1497 3.313

490 002940 176 3 3237 0867 1353 3.354

500 003080 210 3918 0797 1224 3.387

510 003230 244 1 4592 0745 1110 3.410

520 003389 278 3 5256 0708 1009 3.424

530 003555 312 7 5910 0684 0921 3.430

540 003727 347 1 6553 0670 0844 3.430

550 003903 381 4 7183 0665 0778 3.426

560 004081 415 8 7802 0667 0719 3.421

570 004260 450 2 8409 0673 0669 3.415

580 004439 484 5 9005 0684 0624 3.410

590 004617 518 8 9591 0698 0585 3.407

600 004794 553 2 1 0167 0715 0550 3.406
-119-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 15 MPa

T V H s DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001565 -492 3 — 2 5322 1. 152 1 040 2.071

250 001588 -471 4 -1 4471 1 070 975 2.110

260 001611 -450 2 -1 3640 0. 992 914 2.144

270 001636 -428 6 -1 2828 0. 917 856 2.180

280 001661 -406 6 -1 2028 0. 846 801 2.218

290 001688 -384 2 -1 1242 0. 778 749 2.259

300 001716 -361 3 -1 0469 0. 714 700 2.304

310 001745 -338 -0 9705 0. 654 653 2.351

320 001776 -314 2 -0 8950 0. 598 609 2.401

330 001809 -289 9 -0 8203 545 567 2.452

340 001844 -265 1 -0 7463 496 527 2.505

350 001880 -239 8 -0 6729 450 490 2.558

360 001920 -213 9 -0 6000 407 454 2.613

370 001962 -187 4 -0 5277 368 420 2.668

380 002007 -160 5 -0 4558 331 388 2.723

390 002056 -132 9 -0 3843 298 358 2.779

400 002108 -104 8 -0 3132 267 330 2.835

410 002165 -76 2 -0 2425 238 303 2.891

420 002226 -46 9 -0 1721 213 278 2.948

430 002293 -17 1 -0 1020 1896 255 3.004

440 002367 13 2 -0 0323 1689 233 3.060

450 002447 44 1 0371 1505 212 3. 115

460 002534 75 6 1062 1345 1934 3.168

470 002630 107 6 1749 1206 1760 3.219

480 002735 140 1 2432 1089 1600 3.265

490 002848 173 3110 0991 1455 3.306

500 002971 206 3 3782 0913 1324 3.340

510 003102 239 9 4447 0851 1206 3.368

520 003241 273 7 5104 0804 1102 3.388

530 003387 307 7 5751 0771 1010 3.401

540 003539 341 9 6389 0749 0928 3.409

550 003695 376 1 7016 0735 0857 3.412

560 003854 410 4 7633 0730 0794 3.414

570 .004015 444 7 8240 0730 0738 3.413

580 .004176 479 8836 0735 0689 3.413

590 .004338 513 4 .9423 0744 0646 3.413

600 .004499 547 8 1 .0000 0756 0607 3.415
-120-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 16 MPa

T V H S DP/DD DP/DT CP

Deg K m3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001563 -491 2 -1.5344 1 174 1. 054 2.069

250 001585 -470 4 -1.4494 1 092 0. 987 2.107

260 001609 -449 2 -1.3664 1 013 0. 925 2.142

270 001633 -427 7 -1.2852 937 0. 866 2.177

280 001658 -405 7 -1.2054 865 0. 811 2.215

290 001684 -383 3 -1.1270 797 0. 758 2.255

300 001711 -360 5 -1.0497 732 0. 709 2.299

310 001740 -337 2 -0.9735 672 0. 662 2.346

320 001771 -313 5 -0.8982 615 0. 618 2.395

330 001803 -289 2 -0.8237 562 576 2.446

340 001837 -264 5 -0.7499 513 0. 536 2.497

350 001873 -239 2 -0.6767 467 498 2.550

360 001911 -213 4 -0.6041 424 462 2.603

370 001952 -187 1 -0.5320 384 429 2.657

380 001995 -160 2 -0.4604 347 397 2.711

390 002042 -132 8 -0.3893 314 367 2.765

400 002092 -104 9 -0.3186 283 339 2.819

410 002145 -76 4 -0.2483 254 312 2.873

420 002203 -47 4 -0. 1784 228 287 2.926

430 002266 -17 8 -0.1089 205 264 2.980

440 002334 12 3 -0.0398 1840 242 3.033

450 002408 42 9 0.0290 1652 222 3.084

460 002489 74 1 0.0974 1487 203 3.134

470 002576 105 7 0. 1653 1344 1856 3.182

480 002670 137 8 0.2328 1220 1696 3.226

490 002772 170 3 0.2998 1116 1550 3.266

500 002881 203 2 0.3662 1030 1418 3.301

510 002998 236 .4 0.4319 0960 1298 3.331

520 003121 269 9 0.4969 0905 1191 3.355

530 003251 303 6 0.5611 0863 a 1095 3.373

540 003385 337 5 0.6243 0833 1009 3.386

550 003524 371 5 0.6867 0812 0934 3.396

560 003667 405 7 0.7481 0799 0867 3.403

570 003812 459 9 0.8086 0793 0807 3.407

580 003958 474 2 0.8682 0792 0754 3.411

590 004105 508 6 0.9269 0796 0707 3.415

600 004252 543 0.9846 0804 0665 3.419
-121-

Table A2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 18 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 .001559 -489 1 -1.5387 1 219 1 079 2 065

250 001581 -468 3 -1.4539 1 134 1 oil 2 103

260 001603 -447 2 -1.3711 1 053 946 2 137

270 001627 -425 7 -1.2901 976 886 2 171

280 001651 -403 8 -1.2105 903 830 2 208

290 001677 -381 5 -1. 1323 833 777 2 248

300 001703 -358 7 -1.0553 768 727 2 291

310 001731 -335 6 -0.9794 707 679 2 337

320 001760 -311 9 -0.9044 650 634 2 385

330 001791 -287 8 -0.8302 596 592 2 434

340 001824 -263 2 -0.7568 546 552 2 484

350 001858 -238 -0.6840 500 514 2 535

360 001894 -212 4 -0.6118 456 479 2 586

370 001932 -186 3 -0.5403 416 445 2 638

380 001973 -159 6 -0.4692 379 413 2 689

390 002016 -132 4 -0.3987 345 383 2 740

400 002062 -104 8 -0.3287 314 355 2 791

410 002111 -76 6 -0.2591 285 329 2 841

420 002163 -47 9 -0.1900 259 304 2 891

430 002219 -18 7 -0.1214 235 281 2 940

440 002279 11 -0.0533 213 260 2 988

450 002344 41 1 0.0144 1940 239 3 035

460 002413 71 8 0.0817 1767 221 3 081

470 002487 102 8 0. 1484 1615 203 3 124

480 002566 134 3 0.2147 1481 187 3 166

490 002650 166 2 0.2804 1366 173 3 204

500 002740 198 5 0.3455 1267 159 3 239

510 002835 231 1 0.4100 1184 1468 3 271

520 002935 264 0.4739 1115 1356 3 299

530 003040 297 2 0.5370 1059 1255 3 323

540 003149 330 6 0.5994 1014 1163 3 343

550 003262 364 3 0.6611 0979 1081 3 361

560 003379 398 1 0.7219 0953 1007 3 376

570 003497 432 1 0.7820 0934 0941 3 388

580 003618 466 2 0.8412 0922 0881 3. 399

590 003741 500 5 0.8997 0915 0827 3. 409

600 003864 534 9 0.9575 0913 0779 3. 419
-122-

Table A2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 20 MPa

T V H S DP/DD DP/DT CP

Deg K in3/kg kJ/kg kJ/(kg.K) kJ/(kg.K)

240 001555 -487 1 -1.5430 1 263 1 104 2.062

250 001576 -466 3 -1.4583 1 176 1 033 2.099

260 001599 -445 2 -1.3757 1 093 967 2.133

270 001621 -423 8 -1.2949 1 014 906 2.166

280 001645 -401 9 -1.2155 0. 940 848 2.202

290 001670 -379 6 -1.1375 869 794 2.242

300 001696 -357 -1.0607 803 743 2.284

310 001723 -333 9 -0.9851 741 695 2.329

320 001751 -310 3 -0.9104 0. 683 650 2.375

330 001781 -286 3 -0.8365 629 608 2.423

340 001812 -261 8 -0.7634 579 567 2.472

350 001844 -236 8 -0.6910 532 530 2.522

360 001878 -211 3 -0.6192 488 494 2.572

370 001914 -185 3 -0.5480 448 460 2.621

380 001953 -158 8 -0.4775 410 429 2.671

390 001993 -131 8 -0.4074 376 399 2.720

400 002035 -104 4 -0.3380 344 371 2.768

410 002081 -76 4 -0.2690 315 345 2.816

420 002128 -48 -0.2006 288 320 2.863

430 002179 -19 1 -0. 1327 264 297 2.909

440 002233 10 2 -0.0653 242 275 2.954

450 002290 40 0.0016 222 255 2.998

460 002351 70 3 0.0680 204 237 3.041

470 002415 100 9 0. 1339 188 219 3.082

480 002484 132 0. 1992 174 203 3.121

490 002556 163 4 0.2639 161 188 3.158

500 002632 195 2 0.3281 150 175 3. 193

510 002713 227 3 0.3917 1410 1622 3.225

520 002797 259 8 0.4547 1330 1507 3.255

530 002884 292 5 0.5170 1261 1402 3.282

540 002976 325 6 0.5787 1205 1307 3.306

550 003070 358 8 0.6396 1158 1220 3.328

560 003167 392 4 0.6999 1120 1141 3.348

570 003266 426 1 0.7595 1090 1069 3.365

580 003368 460 0.8184 1067 1004 3.382

590 003471 494 1 0.8767 1050 0945 3.397

600 003575 528 4 0.9342 1037 0891 3.411
-123-

APPENDIX B.

Tables of Values for the Thermodynamic Properties

of the 0.1 Mole Fraction Isopentane in Isobutane Mixture

in British Units

Table Bl presents properties for both the dew-points and the

bubble-points and at increments of both temperature and pressure. Also

shown are the concentrations and thermodynamic properties of the

coexisting phase.

Table B2 presents properties along isobars at increments of

temperature from the compressed liquid through the superheated vapor. At

the bubble -points and dew-points the concentrations and values for the

thermodynamic properties of the coexisting phase are also shown.

The intervals for both of these sets of tables are chosen such that

for most purposes a linear interpolation between the values presented will

give values for the thermodynamic properties to within the uncertainty of

the calculated values . In order to facilitate smoother interpolations

the values of the properties presented here have from one half to one more

significant figure than would be justified by the uncertainty of these

calculated values
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-128-

Table B2 . THERMODYNAMIC PROPERTIES OF THE . 1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

VAPOR

,

P = 1 PSIA

T V H s DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40 75 38 -57 1 0680 75. 1 0. 00240 0.327

-20 79 00 -50 5 0834 78 7 0. 00229 0.339

82 63 -43 6 0986 82 4 0. 00219 0.350

20 86 26 -36 6 1137 86 00209 0.363

40 89 88 -29 2 1287 89 7 00201 0.375

60 93 50 -21 6 1437 93 3 00193 0.387

80 97 12 -13 7 1585 96 9 00186 0.399

100 100 74 -5 6 1733 100 6 00179 0.412

110 102 54 -1 5 1806 102 4 00176 0.418

120 104 35 2 8 1880 104 2 00173 0.424

130 106 16 7 1953 106 00170 0.431

140 107 97 11 4 2026 107 8 00167 0.437

150 109 78 15 8 2099 109 6 00164 0.443

160 111 58 20 2 2171 111 5 00162 0.449

170 113 39 24 8 2244 113 3 00159 0.456

180 115 20 29 4 2316 115 1 00157 0.462

190 117 00 34 2388 116 9 00154 0.468

200 118 81 38 7 2460 118 7 00152 0.474

210 120 62 43 5 2532 120 5 00150 0.481

220 122 42 48 3 2604 122 3 00147 0.487

230 124 23 53 2 2675 124 1 00145 0.493

240 126 04 58 2 2746 125 9 00143 0.499

250 127 84 63 2 2818 127 7 00141 0.505

260 129 65 68 3 2889 129 6 00139 0.511

270 131 45 73 4 2960 131 4 00137 0.517

280 133 26 78 6 3030 133 2 00135 0.523

290 135 06 83 9 3101 135 00134 0.529

300 136 87 89 2 3172 136 8 00132 0.535

310 138 67 94 6 3242 138 6 00130 0.541

320 140 48 100 3312 140 4 00128 0.546

330 142 28 105 5 3382 142 2 00127 0.552

340 144 09 111 3452 144 00125 0.558

350 145 89 116 7 3521 145 8 00124 0.564

360 147 70 122 3 3591 147 6 00122 0.569

370 149 50 128 3660 149 4 00121 0.575

380 151 31 133 8 3730 151 2 00119 0.580

390 153 11 139 6 3799 153 00118 0.586

400 154 92 145 5 3867 154 9 00116 0.591

420 158 53 157 5 4005 158 5 00114 0.602

440 162 14 169 6 4141 162 1 00111 0.613

460 165 75 182 4277 165 7 00109 0.623

480 169 35 194 5 4412 169 3 00107 0.633

500 172 96 207 3 4546 172 9 00104 0.643

520 176 57 220 2 4680 176 5 00102 0.653

540 180 18 233 4 4813 180 1 00100 0.663

560 183 79 246 7 4945 183 7 00098 0.672

580 187 39 260 3 5076 187 4 00096 0.682

600 191 00 274 5207 191 00094 0.691
-129-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg F

V

ft3/lb

LIQUID,

H

BTU/lb

P =

-40.0 0.02544 -224.4

-30.24 0.02566 -219.5

COEXISTING VAPOR (x=.0196)

-30.24 15.52 -49.1

BTU/(lb.F)

-0.3720

-0.3606

0.0241

5 PSIA

DP/DD

VAPOR

COEXISTING LIQUID (x=.3661)

-19.84 0.02503 -229.9 -0.3553

-19.84

-10.0

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

160.0

170.0

180.0

190.0

200.0

220.0

240.0

260.0

280.0

300.0

320.0

340.0

360.0

380.0

400.0

420.0

440.0

460.0

480.0

500.0

520.0

540.0

560.0

580.0

600.0

15.59

15.96

16.33

16.70

17.07

17.44

17.81

18.18

18.55

18.92

19.28

19.65

20.02

20.38

20.75

21. 12

21.48

21.85

22.21

22.58

22.94

23.31

23.67

24.40

25.13

25.85

26.58

27.31

28.03

28.76

29.48

30.21

30.93

31.66

32.38

33. 11

33.83

34.55

35.28

36.00

36.73

37.45

38.17

-51.0

-47.6

-44.2

-40.6

-37.0

-33.4

-29.7

-25.9

-22.0

-18

-14

-10

-6

-1

2

6

11

15

19

24

29

33

38

48. 1 57.9

68. 1 78.4

89.0

99.8

110

122

133

145

157.3

169.5

181.8

194.4

207. 1 220. 1 233.3

246.6

260. 1 273.9

0.0289

0.0365

0.0441

0.0517

0.0593

0.0668

0.0744

0.0819

0.0894

0.0969

0.1043

0.1117

0.1191

0.1265

0.1338

0.1412

0.1485

0.1558

0. 1631

0. 1703

0.1776

0.1848

0.1920

0.2064

0.2207

0.2349

0.2491

0.2632

0.2773

0.2913

0.3052

0.3191

0.3329

0.3466

0.3603

0.3738

0.3874

0.4008

0.4142

0.4275

0.4407

0.4538

0.4669

1890

1817

1821.7

76.6

78.5

80

82

84

86

88.0

89.9

91.8

93

95

97

99

101. 1 103.0

104.8

106

108

110

112

114

115.9

117.8

7

6

4

2

1

121.5

125. 1 128.8

132.5

136. 1 139.8

143.4

147. 1 150.7

154.4

158.0

161.6

165

168

172

176

179.8

183.4

187. 1 190.7

DP/DT CP

BTU/(lb.F)

65.8

64.0

76.3 0.01202

62.48

0.01174

0.01146

0.01119

0.01093

0.01069

0.01045

0.01023

0.01002

0.00981

0.00962

0.00943

0.00925

0.00908

0.00891

0.00875

0.00860

0.00845

0.00830

0.00817

0.00803

0.00790

0.00778

0.00766

. 00742

0.00721

0.00700

0.00681

0.00663

0.00645

0.00629

0.00613

0.00599

0.00585

0.00571

0.00558

0.00546

0.00534

0.00523

0.00512

0.00502

0.00492

0.00482

0.00473

0.495

0.502

0.335

0.496

0.341

0.347

0.353

0.358

0.364

0.370

0.376

0.382

0.388

0.395

0.401

0.407

0.413

0.419

0.426

0.432

0.438

0.444

0.450

0.457

0.463

0.469

0.475

0.487

0.499

0.512

0.523

0.535

0.547

0.558

0.570

0.581

0.592

0.602

0.613

0.623

0.634

0.644

0.653

0.663

0.673

0.682

0.691
-130-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg F

V

ft3/lb

LIQUID,

H

BTU/lb

P = 10 PSIA

S DP/DD

BTU/(lb.F)

-40.0 0.02543 -224.4 -0.3721

-20.0 0.02590 -214.4 -0.3487

-2.51 0.02633 -205.4 -0.3287

COEXISTING VAPOR (x=.0231)

-2.51 8.15 -40.5 0.0210

VAPOR

COEXISTING LIQUID (x=.3282)

7.21 0.02577 -214.2 -0.3237

1893

1739

1600

DP/DT CP

BTU/(lb.F)

65.9

62.1

58.6

79.1 0.0232

1610. 57.6

0.495

0.509

0.519

0.355

0.515

7 21 8 17 -42 3 0255 79 3 0227 0.360

10 8 23 -41 3 0277 79 8 0225 0.361

20 8 42 -37 7 0353 81 9 0220 0.367

30 8 61 -34 0429 83 9 0214 0.373

40 8 80 -30 2 0505 85 9 0210 0.379

50 8 99 -26 4 0580 87 9 0205 0.385

60 9 18 -22 5 0656 89 8 '0 0200 0.391

70 9 36 -18 6 0731 91 8 0196 0.397

80 9 55 -14 6 0806 93 7 0192 0.403

90 9 74 -10 5 0880 95 7 0188 0.409

100 9 93 -6 4 0954 97 6 0185 0.415

110 10 11 -2 2 1028 99 5 01811 0.421

120 10 30 2 1102 101 5 01777 0.427

130 10 48 6 3 1176 103 4 01744 0.433

140 10 67 10 7 1249 105 3 01713 0.439

150 10 85 15 1 1322 107 2 01682 0.445

160 11 04 19 6 1395 109 1 01653 0.451

170 11 22 24 1 1468 111 01625 0.458

180 11 41 28 7 1541 112 9 01598 0.464

190 11 59 33 4 1613 114 7 01572 0.470

200 11 78 38 1 1685 116 6 01547 0.476

220 12 15 47 8 1829 120 4 01499 0.488

240 12 51 57 7 1973 124 1 01454 0.500

260 12 88 67 8 2115 127 8 01412 0.512

280 13 25 78 1 2257 131 6 01372 0.524

300 13 61 88 7 2399 135 3 01335 0.536

320 13 98 99 6 2539 139 01299 0.547

340 14 34 110 6 2680 142 7 01266 0.559

360 14 71 121 9 2819 146 4 01234 0.570

380 15 07 133 4 2958 150 01204 0.581

400 15 44 145 2 3096 153 7 01175 0.592

420 15 80 157 1 3233 157 4 01147 0.603

440 16 16 169 3 3370 161 1 01121 0.613

460 16 53 181 6 3506 164 7 01096 0.624

480 16 89 194 2 3641 168 4 01073 0.634

500 17 25 207 3775 172 1 01050 0.644

520 17 62 219 9 3909 175 7 01028 0.654

540 17 98 233 1 4042 179 4 01007 0.663

560 18 34 246 5 4174 183 00987 0.673

580 18 71 260 4306 186 7 00968 0.682

600 19 07 273 7 4437 190 3 00949 0.691
-131

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg F

LIQUID

V

ft3/lb

H

BTU/lb

-40.0 0.02543 -224.4

-20.0 0.02590 -214.3

0.0 0.02639 -204.1

14.76 0.02678 -196.3

COEXISTING VAPOR (x=.0254)

14.76 5.70 -35.0

P = 14.696 PSIA

S DP/DD

BTU/(lb.F)

-0.3721

-0.3487

-0.3259

-0.3094

0.0203

1895.

1742.

1582.

1463.

DP/DT CP

BTU/(lb.F)

65

62

58

55

80.3 0.0335

0.495

0.509

0.521

0.529

0.367

VAPOR

COEXISTING LIQUID (x=.3073)

24.06 0.02626 -204.3 -0.3046 1474. 54.4 0.526

24 06 5 70 -36. 8 0. 0246 80. 4 0329 0.373

30 5 78 -34. 6 0. 0292 81. 7 0324 0.376

40 5 92 -30. 8 0. 0368 83. 8 0316 0.381

50. 6 05 -27. 0. 0445 85. 8 0308 0.387

60. 6 18 -23. 1 0. 0520 87. 9 0301 0.393

70. 6 31 -19. 1 0. 0596 90. 0294 0.399

80 6 44 -15. 1 0. 0671 92. 0288 0.404

90. 6 57 -11. 0. 0746 94 0282 0.410

100. 6 70 -6. 9 0. 0820 96 0276 0.416

110 6 83 -2 7 0. 0895 98 0270 0.422

120 6 96 1 6 0. 0969 100 0265 0.428

130 7 09 5 9 0. 1043 102 0260 0.434

140 7 21 10 3 1116 103 9 0255 0.440

150 7 34 14 7 1190 105 9 0250 0.447

160 7 47 19 2 0. 1263 107 8 0246 0.453

170 7 60 23 8 1336 109 7 0242 0.459

180 7 72 28 4 1409 111 7 0237 0.465

190 7 85 33 1 1481 113 6 0233 0.471

200 7 98 37 8 1554 115 5 0230 0.477

220 8 23 47 5 1698 119 3 0222 0.489

240 8 48 57 4 1841 123 2 0215 0.501

260 8 73 67 5 1984 126 9 0209 0.513

280 8 98 77 9 2126 130 7 0203 0.525

300 9 23 88 5 2268 134 5 0197 0.536

320 9 49 99 3 2409 138 2 0192 0.548

340 9 74 110 4 2549 142 0187 0.559

360 9 98 121 7 2689 145 7 0182 0.570

380 10 23 133 2 2827 149 4 0178 0.582

400 10 48 145 2966 153 1 0174 0.592

420 10 73 156 9 3103 156 8 01694 0.603

440 10 98 169 1 3240 160 6 01655 0.614

460 11 23 181 5 3376 164 2 .01618 0.624

480 .0 11 48 194 3511 167 9 .01582 0.634

500 .0 11 73 206 .8 3646 171 6 .01548 0.644

520 .0 11 97 219 8 3779 175 3 .01516 0.654

540 .0 12 22 233 .0 3913 179 .01485 0.664

560 .0 12 .47 246 .3 4045 182 7 .01455 0.673

580 .0 12 72 259 .9 4176 186 3 .01426 0.682

600 .0 12 .96 273 .6 4307 190 .01399 0.692
-132-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 20 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 02543 -224.4 -0.3721 1898. 66.0 0.495

-20.0 02589 -214.3 -0.3488 1744. 62.2 0.509

0.0 02639 -204.1 -0.3259 1584. 58.2 0.521

10.0 02665 -198.8 -0.3147 1503. 56.2 0.526

20.0 02692 -193.6 -0.3036 1423. 54.2 0.532

29.69 02720 -188.4 -0.2929 1345. 52.2 0.538

COEXISTING VAPOR ( x=.0275)

29.69 4.27 -30.3 0.0203

VAPOR

81.0 0.0452 0.379

COEXISTING LIQUID (x=.2908)

38.62 02671 -195.5 -0.2882 1357. 51.5 0.536

38.62 4.27 -32.0 0.0246 81.0 . 0444 0.384

40.0 4.29 -31.5 0.0256 81 .3 0.0443 0.385

50.0 4.39 -27.6 0.0333 83.5 0.0431 0.390

60.0 4.49 -23.7 0.0409 85.7 0.0420 0.396

70.0 4.58 -19.7 0.0485 87.8 0.0410 0.401

80.0 4.68 -15.6 0.0561 90.0 0.0400 0.407

90.0 4.78 -11.5 0.0636 92. 1 0.0391 0.413

100.0 4.88 -7.4 0.0711 94.2 0.0382 0.418

110.0 4.97 -3.2 0.0786 96.2 0.0374 0.424

120.0 5.07 1.1 0.0860 98.3 0.0367 0.430

130.0 5.17 5.4 0.0935 100.3 0.0359 0.436

140.0 5.26 9.8 0.1008 102.4 0.0352 0.442

150.0 5.36 14.3 0.1082 104.4 0.0346 0.448

160.0 5.45 18.8 0. 1155 106.4 0.0339 0.454

170.0 5.55 23.4 0.1229 108.4 0.0333 0.460

180.0 5.64 28.0 0.1302 110.3 0.0327 0.466

190.0 5.74 32.7 0.1374 112.3 0.0321 0.472

200.0 5.83 37.5 0. 1447 114.3 0.0316 0.478

220.0 6.02 47.1 0. 1592 118.2 0.0306 0.490

240.0 6.20 57. 1 0.1735 122.1 0.0296 0.502

260.0 6.39 67.2 0.1878 125.9 0.0287 0.514

280.0 6.58 77.6 0.2021 129.8 0.0278 0.525

300.0 6.76 88.2 0.2163 133.6 0.0271 0.537

320.0 6.95 99.1 0.2304 137.4 0.0263 0.549

340.0 7.13 110.2 0.2444 141.2 0.0256 0.560

360.0 7.32 121.5 0.2584 145.0 0.0250 0.571

380.0 7.50 133.0 0.2723 148.7 0.0243 0.582

400.0 7.69 144.8 0.2861 152.5 0.0237 0.593

420.0 7.87 156.7 0.2999 156.2 0.0232 0.604

440.0 8.05 168.9 0.3135 160.0 0.0226 0.614

460.0 8.24 181.3 0.3271 163.7 0.0221 0.624

480.0 8.42 193.9 0.3407 167.4 0.0216 0.635

500.0 8.60 206.6 0.3541 171 . 1 0.0212 0.645

520.0 8.79 219.6 0.3675 174.8 0.0207 0.654

540.0 8.97 232.8 0.3808 178.5 0.0203 0.664

560.0 9. 15 246.2 0.3941 182.2 0.0199 0.673

580.0 9.33 259.7 0.4072 185.9 0.0195 0.683

600.0 9.52 273.5 0.4203 189.6 0.0191 0.692
-133-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 25 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02543 -224.4 -0.3721 1900. 66.1 0.495

-20.0 0.02589 -214.3 -0.3488 1746. 62.3 0.509

0.0 0.02639 -204.0 -0.3260 1586. 58.3 0.521

10.0 0.02665 -198.8 -0.3147 1505. 56.3 0.526

20.0 0.02692 -193.5 -0.3036 1425. 54.3 0.532

30.0 0.02720 -188.2 -0.2926 1344. 52.2 0. 539

40.0 0.02750 -182.8 -0.2817 1265. 50.2 0.545

41.18 0.02753 -182.

-0.2804 1256. 50.0 0.546

COEXISTING VAPOR (x=.0291)

41.18 3.464 -26.7 0.0207 81.2 0.0563 0.389

VAPOR

COEXISTING LIQUID (x=.2790)

49.83 0.02706 -188.7 -0.2757 1268 49.4 0.543

49 83 3 463 -28 3 0248 81 1 0554 0.394

50 3 464 -28 2 0. 0250 81 2 0554 0.394

60 3 546 -24 3 0. 0327 83 5 0539 0.399

70 3 627 -20 3 0. 0403 85 8 0524 0.404

80 3 707 -16 2 0. 0480 88 0511 0.409

90 3 787 -12 1 0555 90 2 0499 0.415

100 3 866 -7 9 0631 92 4 0487 0.421

110 3 945 -3 6 0706 94 5 0476 0.426

120 4 024 7 0780 96 7 0466 0.432

130 4 102 5 0855 98 8 0456 0.438

140 4 179 9 4 0929 100 9 0447 0.444

150 4 257 13 9 1003 102 9 0438 0.449

160 4 334 18 4 1077 105 0430 0.455

170 4 411 23 1150 107 0421 0.461

180 4 488 27 6 1223 109 1 0414 0.467

190 4 564 32 3 1296 111 1 0406 0.473

200 4 640 37 1 1369 113 1 0399 0.479

220 4 792 46 8 1514 117 1 0386 0.491

240 4 943 56 7 1658 121 0373 0.503

260 5 094 66 9 1801 125 0362 0.515

280 5 244 77 3 1944 128 9 0351 0.526

300 5 393 88 2086 132 7 0341 0.538

320 5 543 98 8 2227 136 6 0331 0.549

340 5 692 109 9 2368 140 4 0322 0.560

360 5 840 121 3 2507 144 2 0314 0.572

380 5 988 132 8 2646 148 1 0306 0.583

400 6 136 144 6 2785 151 8 0298 0.593

420 6 284 156 5 2922 155 6 0291 0.604

440 6 432 168 .7 3059 159 4 0284 0.614

460 6 579 181 1 3196 163 2 0278 0.625

480 6 726 193 7 3331 166 9 0271 0.635

500 6 873 206 5 3466 170 7 0265 0.645

520 7 020 219 .5 3600 174 4 0260 0.655

540 .0 7 167 232 .6 3733 178 1 0254 0.664

560 .0 7 .314 246 .0 3865 181 9 0249 0.674

580 .0 7 460 259 .6 3997 185 6 0244 0.683

600 .0 7 .607 273 .3 4128 189 3 0239 0.692
-134-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 30 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb. F) BTU/(lb.F)

-40.0 0.02543 -224.3 -0.3721 1902. 66.1 0.495

-20.0 0.02589 -214.3 -0.3488 1748. 62.3 0.509

0.0 0.02639 -204.0 -0.3260 1588. 58.4 0.521

10.0 0.02665 -198.8 -0.3148 1507. 56.3 0.526

20.0 0.02692 -193.5 -0.3037 1427. 54.3 0.532

30.0 0.02720 -188.2 -0.2926 1346. 52.3 0.539

40.0 0.02749 -182.8 -0.2817 1267. 50.2 0.545

50.0 0.02780 -177.3 -0.2708 1189. 48.2 0.552

51.02 0.02783 -176.7 -0.2697 1181. 48.0 0.553

COEXISTING VAPOR (x=.0305)

51.02 2.916 -23.6 0.0213 81.2 0.0675 0.397

VAPOR

COEXISTING LIQUID (x=.2694)

59.43 0.02738 -182.8 -0.2651 1192. 47.5 0.550

59 43 2 914 -25 1 0253 81 1 0665 0.402

60 2 918 -24 9 0257 81 2 •0 0664 0.402

70 2 987 -20 9 0335 83 6 0645 0.407

80 3 056 -16 8 0411 86 0628 0.412

90 3 124 -12 6 04 PS 88 3 0612 0.418

100 3 192 -8 4 05': i 90 6 0596 0.423

110 3 259 -4 1 0639 92 8 0582 0.428

120 3 326 2 0714 95 0569 0.434

130 3 392 4 6 0789 97 2 0556 0.440

140 3 458 9 0863 99 3 0544 0.445

150 3 523 13 5 0937 101 5 0533 0.451

160 3 588 18 1011 103 6 0522 0.457

170 3 653 22 6 1085 105 7 0512 0.463

180 3 718 27 3 1158 107 8 0502 0.468

190 3 783 32 1231 109 8 0493 0.474

200 3 847 36 8 1304 111 9 0484 0.480

220 3 975 46 5 1450 116 0467 0.492

240 4 102 56 4 1594 120 0452 0.504

260 4 229 66 6 1738 124 0438 0.515

280 4 355 77 1 1880 127 9 0424 0.527

300 4 480 87 7 2023 131 9 0412 0.538

320 4 606 98 6 2164 135 8 0400 0.550

340 4 730 109 7 2305 139 7 0389 0.561

360 4 855 121 2445 143 5 0379 0.572

380 4 979 132 6 2584 147 4 0369 0.583

400 5 103 144 4 2722 151 2 0359 0.594

420 5 227 156 3 2860 155 0351 0.604

440 5 350 168 5 2997 158 8 0342 0.615

460 5 474 180 9 3133 162 6 0334 0.625

480 5 597 193 5 3269 166 4 0327 0.635

500 5 720 206 3 3404 170 2 0320 0.645

520 5 843 219 3 3538 174 0313 0.655

540 5 965 232 5 3671 177 7 0306 0.665

560 6 088 245 9 3803 181 5 0300 0.674

580 6 211 259 4 3935 185 2 0294 0.683

600 6 333 273 2 4066 188 9 0288 0.692
-135-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 40 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 .02542 -224.3 -0.3722 1907. 66.2 0.495

-20.0 .02589 -214.3 -0.3489 1753. 62.4 0.509

0.0 .02638 -204.0 -0.3260 1592. 58.4 0.520

10.0 . 02664 -198.8 -0.3148 1511. 56.4 0.526

20.0 .02691 -193.5 -0.3037 1431. 54.4 0.532

30.0 .02719 -188.2 -0.2927 1350. 52.4 0.538

40.0 .02749 -182.7 -0.2817 1271. 50.3 0.545

50.0 .02779 -177.2 -0.2709 1192. 48.3 0.552

60.0 .02811 -171.7 -0.2601 1115. 46.3 0.559

67.45 .02836 -167.45 -0.2520 1058. 44.8 0. 565

COEXISTING VAPOR ( x=.0329)

67.45 2.219 -18.4 0.0226

VAPOR

80.8 0.0905 0.413

COEXISTING LIQUID (x=.2543)

75.46 .02794 -172.9 -0.2475 1070. 44.4 0.563

75.46 2.215 -19.9 0.0264 80.6 0.0893 0.417

80.0 2.240 -18.0 0.0300 81.8 0.0880 0.419

90.0 2.294 -13.7 0.0377 84.3 0.0853 0.424

100.0 2.347 -9.5 0.0454 86.8 0.0829 0.428

110.0 2.400 -5. 1 0.0530 89.2 0.0807 0.433

120.0 2.452 -0.8 0.0606 91.6 0.0786 0.438

130.0 2.503 3.6 0.0682 93.9 0.0767 0.444

140.0 2.555 8. 1 0.0757 96.3 0.0749 0.449

150.0 2.605 12.6 0.0832 98.5 0.0732 0.454

160.0 2.656 17.2 0.0906 100.8 0.0716 0.460

170.0 2.706 21.8 0.0980 103.0 0.0701 0.466

180.0 2.756 26.5 0. 1054 105.2 0.0687 0.471

190.0 2.805 31.3 0. 1128 107.3 0.0673 0.477

200.0 2.855 36. 1 0. 1201 109.5 0.0660 0.483

220.0 2.953 45.8 0.1347 113.7 0.0636 0.494

240.0 3.050 55.8 0. 1492 117.9 0.0614 0.506

260.0 3.147 66. 1 0. 1636 122.0 0.0593 0.517

280.0 3.243 76.5 0. 1779 126. 1 0.0574 0.528

300.0 3.339 87.2 0.1922 130.2 0.0557 0.540

320.0 3.434 98. 1 0.2064 134.2 0.0540 0.551

340.0 3.529 109.2 0.2204 138.2 0.0525 0.562

360.0 3.623 120.6 0.2345 142.1 0.0511 0.573

380.0 3.718 132.2 0.2484 146.0 0.0497 0.584

400.0 3.811 144.0 0.2623 150.0 0.0484 0.595

420.0 3.905 156.0 0.2761 153.8 0.0472 0.605

440.0 3.999 168.2 0.2898 157.7 0.0461 0.616

460.0 4.092 180.6 0.3034 161.6 0.0450 0.626

480.0 4. 185 193.2 0.3170 165.4 0.0439 0.636

500.0 4.278 206.0 0.3305 169.3 0.0429 0.646

520.0 4.371 219.0 0.3439 173. 1 0.0420 0.656

540.0 4.464 232.2 0.3572 176.9 0.0411 0.665

560.0 4.556 245.6 0.3705 180.7 0.0402 0.675

580.0 4.649 259.2 0.3837 184.5 0.0394 0.684

600.0 4.741 272.9 0.3968 188.2 0.0386 0.693
-136-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 50 PSIA

T V H S DP/DD DP/DT CP

Deg F et3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 .02542 -224.3 -0.3722 1912. 66.4 0.495

-20.0 .02588 -214.2 -0.3489 1757. 62.5 0.509

0.0 .02638 -204.0 -0.3261 1597. 58.6 0.520

10.0 .02664 -198.8 -0.3149 1516. 56.5 0.526

20.0 .02691 -193.5 -0.3038 1435. 54.5 0.532

30.0 .02719 -188.1 -0.2928 1354. 52.5 0.538

40.0 .02748 -182.7 -0.2818 1275. 50.4 0.545

50.0 .02779 -177.2 -0.2709 1196. 48.4 0.552

60.0 .02811 -171.6 -0.2601 1119. 46.4 0.559

70.0 .02844 -166.0 -0.2494 1043. 44.3 0.567

80.0 .02880 -160.3 -0.2387 969. 42.3 0.575

81.02 .02883 -159.7 -0.2376 961. 42. 1 0.576

COEXISTING VAPOR (x=.0350)

81.02 1.792 -14.1 0.0239

/APOR

80.0 0.1140 0.426

COEXISTING LIQUID (x=.2428)

88.69 .02843 -164.6 -0.2332 972. 41.8 0.574

88.69 1.788 -15.5 0.0276 79.7 0. 1127 0.431

90.0 1.793 -14.9 0.0287 80.1 0.1122 0.431

100.0 1.838 -10.6 0.0365 82.8 0.1085 0.435

110.0 1.883 -6.2 0.0442 85.5 0.1052 0.439

120.0 1.926 -1.8 0.0519 88.1 0.1022 0.444

130.0 1.969 2.7 0.0596 90.6 0.0994 0.448

140.0 2.012 7.2 0.0672 93. 1 0.0968 0.453

150.0 2.054 11.7 0.0747 95.5 0.0944 0.458

160.0 2.095 16.3 0.0822 97.9 0.0921 0.463

170.0 2.137 21.0 0.0897 100.2 0.0900 0.469

180.0 2. 178 25.7 0.0971 102.5 0.0880 0.474

190.0 2.219 30.5 0. 1045 104.8 0.0862 0.480

200.0 2.259 35.3 0.1119 107.0 0.0844 0.485

220.0 2.339 45.2 0. 1266 111.5 0.0811 0.496

240.0 2.419 55.2 0. 1411 115.8 0.0781 0.507

260.0 2.498 65.5 0. 1556 120. 1 0.0754 0.519

280.0 2.576 76.0 0. 1700 124.3 0.0729 0.530

300.0 2.654 86.7 0. 1842 128.4 0.0706 0.541

320.0 2.731 97.6 0. 1985 132.6 0.0684 0.552

340.0 2.808 108.8 0.2126 136.6 0.0664 0.563

360.0 2.884 120.1 0.2266 140.7 0.0645 0.574

380.0 2.960 131.7 0.2406 144.7 0.0628 0.585

400.0 3.036 143.5 0.2545 148.7 0.0611 0.596

420.0 3. 112 155.6 0.2683 152.7 0.0596 0.606

440.0 3.188 167.8 0.2821 156.6 0.0581 0.616

460.0 3.263 180.2 0.2957 160.5 0.0567 0.627

480.0 3.338 192.8 0.3093 164.4 0.0553 0.637

500.0 3.413 205.7 0.3228 168.3 0.0541 0.646

520.0 3.488 218.7 0.3362 172.2 0.0529 0.656

540.0 3.562 231.9 0.3496 176.0 0.0517 0.666

560.0 3.637 245.3 0.3628 179.9 0.0506 0.675

580.0 3.711 258.9 0.3760 183.7 0.0496 0.684

600.0 3.786 272.6 0.3892 187.6 0.0486 0.693
-137-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 60 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02542 -224.3 -0.3723 1917. 66.5 0.495

-20.0 0.02588 -214.2 -0.3489 1762. 62.7 0.509

0.0 0.02637 -203.9 -0.3261 1601. 58.7 0.520

10.0 0.02663 -198.7 -0.3149 1520. 56.6 0.526

20.0 0.02690 -193.5 -0.3038 1439. 54.6 0.532

30.0 0.02718 -188.1 -0.2928 1358. 52.6 0.538

40.0 0.02747 -182.7 -0.2819 1279. 50.5 0.545

50.0 0.02778 -177.2 -0.2710 1200. 48.5 0.552

60.0 0.02810 -171.6 -0.2602 1123. 46.4 0.559

70.0 0.02843 -166.0 -0.2494 1047. 44.4 0.567

80.0 0.02879 -160.3 -0.2388 972. 42.4 0.575

90.0 0.02916 -154.5 -0.2281 900. 40.4 0.584

92.67 0.02926 -152.9 -0.2253 880. 39.9 0.587

COEXISTING VAPOR (x=.0368)

92.67 1.502 -10.4 0.0253 79.0 0.1383 0.439

VAPOR

COEXISTING LIQUID (x=.2335)

100.06 0.02888 -157.4 -0.2210 891 39.6 0.584

100. 06 1 498 -11. 8 0. 0289 78. 6 1368 0.443

110. 1 536 -7. 4 0. 0367 81 5 1321 0.446

120. 1 574 -2. 9 0445 84 4 1278 0.450

130. 1 612 1. 6 0. 0522 87 1 1239 0.454

140. 1 649 6. 2 0599 89 7 1203 0.458

150. 1 685 10. 8 0675 92 3 1170 0.463

160. 1 721 15. 5 0751 94 9 1139 0.467

170. 1 757 20. 2 0827 97 3 1111 0.472

180 1 792 24 9 0901 99 8 1085 0.477

190 1 827 29 7 0976 102 2 1060 0.483

200 1 861 34 6 1050 104 5 1037 0.488

220 1 930 44 5 1198 109 1 0994 0.499

240 1 998 54 6 1344 113 7 0955 0.510

260 2 065 64 9 1489 118 1 0921 0.521

280 2 131 75 4 1633 122 4 0889 0.532

300 2 197 86 1 1777 126 7 0859 0.543

320 2 262 97 1 1919 130 9 0832 0.554

340 2 327 108 3 2061 135 1 0807 0.565

360 2 391 119 7 2202 139 3 0783 0.575

380 2 456 131 3 2342 143 4 0761 0.586

400 2 .520 143 1 2481 147 4 0741 0.597

420 2 .583 155 2 2619 151 5 0721 0.607

440 2 .647 167 4 2757 155 5 0703 0.617

460 2 .710 179 8 2893 159 5 0686 0.627

480 2 .773 192 5 3029 163 4 0669 0.637

500 2 .836 205 3 3165 167 4 0654 0.647

520 2 .899 218 .4 3299 171 3 0639 0.657

540 .0 2 .962 231 .6 3433 175 2 0625 0.666

560 .0 3 .024 245 .0 3565 179 1 0611 0.676

580 .0 3 .087 258 .6 3698 183 0599 0.685

600 .0 3 . 149 272 .4 .3829 186 9 0586 0.694
-138-

Table B2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 70 PSIA

T V H S DP/DD DP/DT CP

Deg F et3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 .02541 -224.2 -0.3723 1921. 66.6 0.495

-20.0 .02588 -214.2 -0.3490 1766. 62.8 0.509

0.0 .02637 -203.9 -0.3262 1605. 58.8 0.520

10.0 .02663 -198.7 -0.3150 1524. 56.7 0.526

20.0 .02690 -193.4 -0.3039 1443. 54.7 0.532

30.0 .02718 -188.1 -0.2929 1362. 52.6 0.538

40.0 .02747 -182.7 -0.2819 1282. 50.6 0.545

50.0 .02777 -177.2 -0.2710 1204. 48.6 0.552

60.0 .02809 -171.6 -0.2602 1127. 46.5 0.559

70.0 .02843 -166.0 -0.2495 1051. 44.5 0.567

80.0 .02878 -160.2 -0.2388 976. 42.5 0.575

90.0 .02915 -154.4 -0.2282 903. 40.5 0.584

100.0 .02954 -148.5 -0.2175 832. 38.5 0.593

102.95 .02966 -146.8 -0.2144 811. 38.0 0.596

COEXISTING VAPOR (x=.0385)

102.95 1.292 -7.3 0.0265

VAPOR

77.8 0.1634 0.450

COEXISTING LIQUID (x=.2257)

110.09 .02929 -150.9 -0.2103 821. 37.7 0.594

110.09 1.288 -8.6 0.0301 77.4 0.1617 0.454

120.0 1.322 -4.0 0.0379 80.5 0.1558 0.457

130.0 1.356 0.6 0.0458 83.5 0.1505 0.460

140.0 1.389 5.2 0.0536 86.3 0.1456 0.464

150.0 1.421 9.9 0.0613 89. 1 0. 1412 0.468

160.0 1.453 14.6 0.0689 91.8 0.1372 0.472

170.0 1.485 19.3 0.0765 94.4 0.1335 0.476

180.0 1.516 24. 1 0.0841 97.0 0.1301 0.481

190.0 1.547 28.9 0.0916 99.5 0.1269 0.486

200.0 1.577 33.8 0.0991 102.0 0.1239 0.491

220.0 1.637 43.8 0. 1139 106.8 0.1185 0.501

240.0 1.697 53.9 0. 1286 111.5 0.1136 0.512

260.0 1.755 64.3 0. 1432 116. 1 0.1093 0.523

280.0 1.813 74.8 0. 1576 120.6 0.1053 0.533

300.0 1.870 85.6 0. 1720 125.0 0. 1017 0.544

320.0 1.927 96.6 0. 1863 129.3 0.0984 0.555

340.0 1.983 107.8 0.2005 133.6 0.0953 0.566

360.0 2.039 119.2 0.2146 137.8 0.0925 0.576

380.0 2.095 130.9 0.2286 142.0 0.0898 0.587

400.0 2.151 142.7 0.2426 146.2 0.0873 0.598

420.0 2.206 154.8 0.2564 150.3 0.0850 0.608

440.0 2.261 167.0 0.2702 154.4 0.0828 0.618

460.0 2.315 179.5 0.2839 158.4 0.0807 0.628

480.0 2.370 192.1 0.2975 162.4 0.0787 0.638

500.0 2.424 205.0 0.3111 166.4 0.0768 0.648

520.0 2.478 218.0 0.3245 170.4 0.0751 0.657

540.0 2.533 231.3 0.3379 174.4 0.0734 0.667

560.0 2.587 244.7 0.3512 178.3 0.0718 0.676

580.0 2.640 258.3 0.3644 182.2 0.0703 0.685

600.0 2.694 272. 1 0.3775 186.2 0.0688 0.694

1
-139-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 80 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02541 -224.2 -0.3723 1926. 66.8 0.495

-20.0 0.02587 -214.2 -0.3490 1770. 62.9 0.509

0.0 0.02636 -203.9 -0.3262 1609. 58.9 0.520

10.0 0.02662 -198.7 -0.3150 1528. 56.8 0.526

20.0 0.02689 -193.4 -0.3039 1447. 54.8 0.532

30.0 0.02717 -188.

-0.2929 1366. 52.7 0.538

40.0 0.02746 -182.6 -0.2820 1286. 50.7 0.545

50.0 0.02777 -177.2 -0.2711 1208. 48.7 0.551

60.0 0.02808 -171.6 -0.2603 1130. 46.6 0.559

70.0 0.02842 -165.9 -0.2496 1054. 44.6 0.567

80.0 0.02877 -160.2 -0.2389 980. 42.6 0.575

90.0 0.02914 -154.4 -0.2282 907. 40.6 0.584

100.0 0.02953 -148.5 -0.2176 836. 38.6 0.593

110.0 0.02995 -142.5 -0.2070 766. 36.7 0.603

112. 19 0.03004 -141.2 -0.2047 751. 36.2 0.605

COEXISTING VAPOR (x=.0400)

112.19 1. 133 -4.4 0.0278 76.5 0. 1892 0.462

VAPOR

COEXISTING LIQUID (x=.2190)

119.10 0.02968 -145.1 -0.2007 761 36.0 0.603

119 10 1 129 -5 7 0312 76. 1 0. 1875 465

120 1 131 -5 3 0319 76. 4 0. 1868 466

130 1 163 -0 6 0399 79. 7 0. 1796 468

140 1 193 4 1 0478 82 8 0. 1731 470

150 1 222 8 8 0556 85 7 0. 1674 473

160 1 252 13 6 0634 88 6 0. 1621 477

170 1 280 18 4 0710 91 4 1574 481

180 1 308 23 2 0787 94 1 0. 1530 485

190 1 336 28 1 0862 96 8 1489 490

200 1 364 33 1 0938 99 4 1452 494

220 1 418 43 1087 104 4 1384 504

240 1 471 53 2 1235 109 3 1325 514

260 1 523 63 6 1381 114 1 1271 525

280 1 574 74 2 1526 118 7 1223 535

300 1 625 85 1 1671 123 2 1180 546

320 1 676 96 1 1814 127 7 1140 556

340 1 726 107 3 1956 132 1 1103 567

360 1 775 118 8 2098 136 4 1069 578

380 1 825 130 4 2238 140 7 1037 588

400 1 874 142 3 2378 144 9 1008 599

420 1 922 154 4 2517 149 1 0980 609

440 1 971 166 6 2654 153 2 0954 619

460 2 019 179 1 2792 157 3 0930 629

480 2 .067 191 8 2928 161 4 0907 639

500 2 115 204 7 3063 165 5 0885 649

520 2 163 217 7 3198 169 5 0864 658

540 2 .211 231 3332 173 5 0844 667

560 2 .258 244 4 3465 177 5 0826 677

580 .0 2 .306 258 3597 181 5 0808 686

600 .0 2 .353 271 8 3729 185 5 0791 695
-140-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 90 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02541 -224.2 -0.3724 1931. 66.9 0.495

-20.0 0.0258? -214.1 -0.3491 1775. 63.0 0.508

0.0 0.02636 -203.9 -0.3263 1613. 59.0 0.520

10.0 0.02662 -198.6 -0.3151 1532. 56.9 0.526

20.0 0.02689 -193.4 -0.3040 1451. 54.9 0.532

30.0 0.02717 -188.0 -0.2930 1370. 52.8 0.538

40.0 0.02746 -182.6 -0.2820 1290. 50.8 0.544

50.0 0.02776 -177.1 -0.2712 1212. 48.7 0.551

60.0 0.02808 -171.6 -0.2604 1134. 46.7 0.559

70.0 0.02841 -165.9 -0.2496 1058. 44.7 0.566

80.0 0.02876 -160.2 -0.2390 984. 42.7 0.575

90.0 0.02913 -154.4 -0.2283 911. 40.7 0.583

100.0 0.02952 -148.5 -0.2177 840. 38.7 0.593

110.0 0.02994 -142.5 -0.2071 770. 36.8 0.603

120.0 0.03038 -136.4 -0.1965 702. 34.8 0.613

120.61 0.03041 -136.1 -0.1959 698. 34.7 0.614

COEXISTING VAPOR (x=.0414)

120.61 1.007 -1.8 0.0290 75.2 0.2159 0.472

VAPOR

COEXISTING LIQUID (x=.2131)

127.32 0.03006 -139.7 -0.1919 707 34.5 0.612

127 32 1 003 -3 1 0323 74 7 0. 2140 0.476

130 1 Oil -1 8 0345 75 7 0. 2116 0.476

140 1 040 3 0425 79 0. 2031 0.478

150 1 067 7 8 0504 82 3 0. 1956 0.480

160 1 094 12 6 0583 85 4 1889 0.483

170 1 121 17 5 0660 88 3 0. 1828 0.486

180 1 147 22 4 0737 91 2 1773 0.490

190 1 172 27 3 0814 94 1722 0.494

200 1 197 32 2 0890 96 7 1676 0.498

220 1 246 42 3 1040 102 1593 0.507

240 1 295 52 6 1188 107 1 1520 0.517

260 1 342 63 1335 112 1456 0.527

280 1 389 73 6 1481 116 8 1399 0.537

300 1 435 84 5 1626 121 5 1347 0.548

320 1 480 95 6 1770 126 1300 0.558

340 1 525 106 8 1912 130 5 1257 0.568

360 1 570 118 3 2054 135 1217 0.579

380 1 614 130 2195 139 3 1180 0.589

400 1 658 141 9 2335 143 6 1145 0.600

420 1 702 154 2474 147 9 1113 0.610

440 1 746 166 3 2612 152 1 1083 0.620

460 1 789 178 8 2749 156 3 1055 0.630

480 1 832 191 4 2886 160 4 1028 0.640

500 1 875 204 3 3021 164 6 1003 0.649

520 1 918 217 4 3156 168 6 0979 0.659

540 1 960 230 7 3290 172 7 0956 0.668

560 2 003 244 1 3424 176 8 0935 0.677

580 2 045 257 7 3556 180 8 0914 0.686

600 2 088 271 5 3688 184 8 0895 0.695
-141-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 100 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb. F) BTU/(lb.F)

-40.0 0.02540 -224.-0.3724 1936. 67.0 0.495

-20.0 0.02586 -214.

-0.3491 1779. 63. 1 0.508

0.0 0.02635 -203.8 -0.3263 1617. 59. 1 0.520

20.0 0.02688 -193.3 -0.3040 1455. 55.0 0.532

40.0 0.02745 -182.6 -0.2821 1294. 50.9 0.544

60.0 0.02807 -171.5 -0.2604 1138. 46.8 0.558

80.0 0.02875 -160.2 -0.2390 987. 42.8 0.574

100.0 0.02951 -148.5 -0.2178 843. 38.8 0.593

110.0 0.02992 -142.5 -0.2072 774. 36.8 0.602

120.0 0.03037 -136.4 -0. 1966 706. 34.9 0.613

128.36 0.03076 -131.3 -0. 1877 650. 33.3 0.623

COEXISTING VAPOR (x=.0428)

128.36 0.906 0.5 0.0301 73.8 0.2434 0.483

VAPOR

COEXISTING LIQUID (x=.2079)

134.88 0.03042 -134.6 -0.1839 659. 33.1 0.620

134 88 902 -0 7 0333 73 3 2414 0.486

140 916 1 8 0375 75 2 0. 2359 0.487

150 942 6 7 0456 78 7 2263 0.487

160 968 11 6 0535 82 2177 0.489

170 992 16 5 0614 85 2 2101 0.492

180 1 017 21 4 0692 88 2 2032 0.495

190 1 040 26 4 0769 91 2 1969 0.498

200 1 064 31 4 0845 94 1912 0.502

210 1 087 36 5 0921 96 8 1860 0.506

220 1 109 41 6 0997 99 6 1811 0.510

230 1 132 46 7 1072 102 2 1766 0.515

240 1 154 51 9 1146 104 9 1724 0.520

250 1 176 57 1 1220 107 4 1685 0.524

260 1 197 62 4 1294 109 9 1648 0.529

270 1 219 67 7 1367 112 4 1613 0.534

280 1 240 73 1 1440 114 9 1580 0.539

290 1 261 78 5 1513 117 3 1549 0.544

300 1 282 83 9 1586 119 7 1519 0.549

320 1 324 95 1730 124 4 1464 0.560

340 1 365 106 3 1873 129 1414 0.570

360 1 406 117 8 2015 133 5 1368 0.580

380 1 446 129 5 2156 138 1325 0.590

400 1 486 141 5 2296 142 4 1286 0.601

420 1 526 153 6 2435 146 7 1249 0.611

440 1 565 165 9 2574 151 1214 0.621

460 1 605 178 4 2711 155 2 1182 0.631

480 1 644 191 1 2848 159 4 1151 0.640

500 1 683 204 2984 163 6 1123 0.650

520 1 721 217 1 3119 167 8 1095 0.659

540 1 760 230 3 3253 171 9 1070 0.669

560 1 799 243 8 3386 176 1045 0.678

580 1 837 257 4 3519 180 1022 0.687

600 1 875 271 3 3650 184 1 1000 0.696
-142-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 120 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02540 -224.

1

-0.3725 1945. 67.3 0.494

-20.0 0.02586 -214.0 -0.3492 1788. 63.3 0.508

0.0 0.02635 -203.8 -0.3264 1626. 59.3 0.520

20.0 0.02687 -193.3 -0.3041 1463. 55.2 0.531

40.0 0.02744 -182.5 -0.2822 1302. 51.1 0.544

60.0 0.02806 -171.5 -0.2605 1145. 47.0 0.558

80.0 0.02874 -160.2 -0.2392 995. 42.9 0. 574

100.0 0.02949 -148.5 -0.2179 851. 39.0 0.592

110.0 0.02990 -142.5 -0.2073 781. 37.0 0.602

120.0 0.03034 -136.4 -0.1968 713. 35.1 0.612

130.0 0.03081 -130.2 -0. 1862 647. 33.2 0.624

140.0 0.03132 -123.9 -0.1756 583. 31.2 0.636

142.29 0.03144 -122.5 -0.1731 568. 30.8 0.639

COEXISTING VAPOR (x=.0452)

142.29 0.752 4.6 0.0321 70.8 0.301 0.503

VAPOR

COEXISTING LIQUID (x=.1990)

148.47 0.03112 -125.5 -0.1695 576 30.7 0.636

148 47 749 3 5 0352 70 4 299 0.507

150 753 4 3 0365 71 297 0.506

160 776 9 4 0448 74 8 283 0.505

170 799 14 4 0529 78 5 271 0.505

180 821 19 5 0608 82 260 0.507

190 842 24 6 0687 85 3 251 0.509

200 863 29 7 0765 88 5 243 0.511

210 883 34 8 0843 91 6 235 0.514

220 903 40 0919 94 5 228 0.518

230 923 45 2 0995 97 5 222 0.522

240 942 50 4 1071 100 3 216 0.526

250 961 55 7 1146 103 210 0.530

260 980 61 1220 105 8 205 0.534

270 998 66 4 1294 108 4 201 0.539

280 1 017 71 8 1368 111 196 0.543

290 1 035 77 3 1441 113 6 192 0.548

300 1 053 82 8 1514 116 1 188 0.553

320 1 089 94 1659 121 1 181 0.563

340 1 124 105 3 1803 125 9 174 0.573

360 1 159 116 9 1946 130 6 168 0.583

380 1 193 128 7 2087 135 2 163 0.593

400 1 227 140 6 2228 139 8 157 0.603

420 1 261 152 8 2368 144 3 153 0.613

440 1 295 165 1 2507 148 7 148 0.622

460 1 328 177 7 2645 153 1 144 0.632

480 1 361 190 4 2782 157 4 140 0.642

500 1 394 203 3 2918 161 7 137 0.651

520 1 427 216 4 3053 166 133 0.661

540 1 460 229 7 3187 170 2 130 0.670

560 1 492 243 2 3321 174 4 127 0.679

580 1 525 256 9 3454 178 6 124 0.688

600 1 557 270 7 3586 182 7 121 0.697
-143-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 140 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02539 -224.0 -0.3726 1955. 67.5 0.494

-20.0 0.02585 -214.0 -0.3493 1797. 63.6 0.508

0.0 0.02634 -203.7 -0.3265 1634. 59.5 0.520

20.0 0.02686 -193.2 -0.3042 1471. 55.4 0.531

40.0 0.02743 -182.5 -0.2823 1309. 51.2 0.544

60.0 0.02804 -171.5 -0.2607 1153. 47.1 0.558

80.0 0.02872 -160.1 -0.2393 1002. 43. 1 0.574

100.0 0.02947 -148.5 -0.2181 858. 39.2 0.592

110.0 0.02988 -142.5 -0.2075 788. 37.2 0.601

120.0 0.03031 -136.4 -0.1969 721. 35.3 0.612

130.0 0.03078 -130.2 -0. 1864 655. 33.3 0.623

140.0 0.03128 -123.9 -0. 1758 590. 31.4 0.635

150.0 0.03183 -117.5 -0. 1652 528. 29.5 0.648

154.61 0.03210 -114.5 -0.1602 499.. 28.6 0.655

COEXISTING VAPOR (x=.0475)

154.61 0.641 8.2 0.0340 67.8 0.362 0.524

VAPOR

COEXISTING LIQUID (x=.1916)

160.49 0.03179 -117.2 -0.1568 506. 28.6 0.652

160.49 638 7. 1 0. 0370 67. 3 0. 360 0.527

170.0 658 12. 1 0. 0450 71. 3 0. 342 0.523

180.0 679 17 4 0. 0532 75 3 0. 327 0.522

190.0 699 22 6 0. 0613 79 1 0. 313 0.522

200.0 718 27 8 0. 0693 82 6 0. 301 0.522

210.0 737 33 1 0. 0772 86 1 290 0.524

220.0 755 38 3 0. 0850 89 3 280 0.526

230.0 772 43 6 0927 92 5 271 0.529

240.0 790 48 9 1004 95 6 263 0.533

250.0 807 54 3 1080 98 6 256 0.536

260.0 824 59 7 1155 101 5 249 0.540

270.0 841 65 1 1230 104 3 243 0.544

280.0 857 70 6 1304 107 1 237 0.548

290.0 873 76 1 1378 109 8 231 0.553

300.0 889 81 6 1452 112 5 226 0.557

320.0 921 92 9 1598 117 7 217 0.566

340.0 952 104 3 1742 122 8 208 0.576

360.0 983 115 9 1886 127 7 201 0.586

380.0 1 013 127 7 2028 132 5 194 0.595

400.0 1 043 139 7 2169 137 2 187 0.605

420.0 1 072 151 9 2310 141 9 182 0.615

440.0 1 102 164 3 2449 146 5 176 0.624

460.0 1 131 176 9 2587 151 171 0.634

480.0 1 160 189 7 2725 155 5 166 0.643

500.0 1 188 202 6 2861 159 9 162 0.653

520.0 1 217 215 8 2997 164 2 158 0.662

540.0 1 245 229 1 3131 168 6 154 0.671

560.0 1 .273 242 6 3265 172 9 150 0.680

580.0 1 .301 256 3 3398 177 1 147 0.689

600.0 1 .329 270 .2 3530 181 3 143 0.698
-144-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 160 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02538 -224.0 -0.3727 1964. 67.8 0.494

-20.0 0.02584 -213.9 -0.3494 1806. 63.8 0.508

0.0 0.02633 -203.7 -0.3266 1642. 59.7 0.520

20.0 0.02685 -193.2 -0.3043 1478. 55.5 0.531

40.0 0.02742 -182.5 -0.2824 1317. 51.4 0.544

60.0 0.02803 -171.4 -0.2608 1160. 47.3 0.558

80.0 0.02870 -160.1 -0.2394 1010. 43.3 0.573

100.0 0.02945 -148.4 -0.2182 865. 39.3 0.591

110.0 0.02986 -142.5 -0.2077 796. 37.4 0.601

120.0 0.03029 -136.4 -0. 1971 728. 35.4 0.611

130.0 0.03075 -130.2 -0.1865 662. 33.5 0.622

140.0 0.03125 -123.9 -0.1760 598. 31.6 0.634

150.0 0.03179 -117.5 -0.1654 535. 29.7 0.647

160.0 0.03238 -110.9 -0.1547 474. 27.8 0.662

165.69 0.03274 -107.

1

-0.1486 440. 26.7 0.671

COEXISTING VAPOR (x=.0495)

165.69 0.556 11.3 0.0357 64.6 0.427 0.544

COEXISTING LIQUID (x=.1852)

171.32 0.03244 -109.6

VAPOR

-0. 1453 447 26.7 0.668

171 32 554 10 3 0385 64 2 425 0.547

180 571 15 1 0460 68 2 404 0.542

190 590 20 5 0. 0544 72 5 384 0.538

200 608 25 8 0626 76 5 367 0.536

210 626 31 2 0707 80 3 351 0.536

220 643 36 6 0786 83 9 338 0.537

230 659 42 0865 87 4 326 0.538

240 675 47 4 0943 90 7 315 0.541

250 691 52 8 1020 94 305 0.543

260 707 58 3 1096 97 1 296 0.546

270 722 63 8 1172 100 1 288 0.550

280 737 69 3 1247 103 1 281 0.554

290 752 74 8 1322 106 274 0.558

300 766 80 4 1396 108 8 267 0.562

320 795 91 8 1543 114 3 255 0.570

340 823 103 3 1688 119 6 245 0.579

360 850 115 1833 124 8 235 0.588

380 877 126 8 1976 129 8 227 0.598

400 904 138 9 2118 134 7 219 0.607

420 930 151 1 2258 139 5 212 0.617

440 957 163 6 2398 144 2 205 0.626

460 982 176 2 2537 148 9 199 0.636

480 008 189 2674 153 5 193 0.645

500 034 202 2811 158 188 0.654

520 059 215 1 2947 162 5 183 0.663

540 084 228 5 3082 166 9 178 0.673

560 109 242 3216 171 3 174 0.681

580 134 255 7 3349 175 7 169 0.690

600 159 269 6 3482 180 166 0.699
-145-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 180 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02538 -223.9 -0.3728 1973. 68.0 0.494

-20.0 0.02583 -213.9 -0.3495 1814. 64.0 0.508

0.0 0.02632 -203.6 -0.3267 1651. 59.9 0.519

20.0 0.02684 -193.1 -0.3044 1486. 55.7 0.531

40.0 0.02740 -182.4 -0.2825 1325. 51.6 0.543

60.0 0.02801 -171.4 -0.2609 1168. 47.5 0.557

80.0 0.02869 -160.1 -0.2395 1017. 43.5 0.573

100.0 0.02943 -148.4 -0.2184 873. 39.5 0.591

110.0 0.02983 -142.4 -0.2078 803. 37.5 0.600

120.0 0.03026 -136.4 -0.1973 735. 35.6 0.610

130.0 0.03072 -130.2 -0.1867 669. 33.7 0.621

140.0 0.03122 -123.9 -0.1762 605. 31.8 0.633

150.0 0.03175 -117.5 -0.1656 543. 29.9 0.646

160.0 0.03234 -111.0 -0.1549 482. 28.0 0.660

170.0 0.03298 -104.3 -0. 1442 422. 26.1 0.676

175.81 0.03338 -100.3 -0.1380 389. 25.0 0.687

COEXISTING VAPOR (x=.0515)

175.81 0.4896 14.0 0.0372 61.5 0.496 0.565

VAPOR

COEXISTING LIQUID (x=.1796)

181.19 0.03310 -102.5 -0.1348 395 25.0 0.684

181 19 4872 13 1 0. 0399 61 0.494 567

190 5038 18 1 0. 0476 65 4 0.468 560

200 5216 23 7 0. 0561 70 0.443 554

210 5386 29 2 0645 74 3 0.422 551

220 5548 34 7 0726 78 3 0.403 549

230 5705 40 2 0807 82 1 0.387 549

240 5858 45 7 0886 85 7 0.372 550

250 6006 51 3 0964 89 2 0.360 552

260 615 56 8 1042 92 6 0.348 554

270 629 62 4 1118 95 8 0.337 557

280 643 67 9 1194 99 0.328 560

290 657 73 6 1270 102 1 0.319 563

300 670 79 2 1345 105 1 0.310 567

320 696 90 6 1493 110 9 0.296 574

340 722 102 2 1640 116 4 0.283 583

360 747 114 1785 121 8 0.271 592

380 772 125 9 1928 127 0.261 601

400 796 138 2071 132 1 0.251 610

420 820 150 3 2212 137 1 0.243 619

440 844 162 8 2352 142 0.235 628

460 867 175 4 2491 146 8 0.227 637

480 890 188 2 2629 151 5 0.221 647

500 913 201 3 2766 156 1 0.214 656

520 936 214 5 2903 160 7 0.209 665

540 959 227 .8 3038 165 3 0.203 674

560 982 241 .4 3172 169 8 0.198 683

580 1 004 255 .1 3306 174 2 0.193 691

600 .0 1 026 269 .1 3438 178 6 0.188 700
-146-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 200 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02537 -223.8 -0.3728 1983. 68.2 0.494

-20.0 0.02583 -213.8 -0.3496 1823. 64.2 0.508

0.0 0.02631 -203.6 -0.3268 1659. 60.1 0.519

20.0 0.02683 -193.

1

-0.3045 1494. 55.9 0.531

40.0 0.02739 -182.4 -0.2826 1332. 51.8 0.543

60.0 0.02800 -171.3 -0.2610 1175. 47.7 0.557

80.0 0.02867 -160.0 -0.2397 1024. 43.6 0.573

100.0 0.02941 -148.4 -0.2185 880. 39.7 0.590

110.0 0.02981 -142.4 -0.2080 810. 37.7 0.600

120.0 0.03024 -136.4 -0. 1974 743. 35.8 0.610

130.0 0.03069 -130.2 -0. 1869 677. 33.9 0.621

140.0 0.03118 -123.9 -0.1763 613. 32.0 0.632

150.0 0.03171 -117.5 -0. 1658 550. 30.1 0.645

160.0 0.03229 -111.0 -0. 1552 489. 28.2 0.659

170.0 0.03293 -104.3 -0. 1445 430. 26.3 0.675

180.0 0.03363 -97.5 -0. 1337 372. 24.4 0.693

185. 13 0.03403 -93.9 ^0. 1281 343. 23.5 0.703

COEXISTING VAPOR (x=.0534)

185. 13 0.4356 16.5 0.0385

VAPOR

58.3 0.570 0.586

COEXISTING LIQUID (x=.1746)

190.29 0.03375 -95.9 -0.1251 349. 23.5 0.700

190.29 0.4335 15.6 0.0411 57.8 0.567 0.589

200.0 0.4509 21.3 0.0498 63.0 0.532 0.577

210.0 0.4677 27.0 0.0584 67.8 0.502 0.569

220.0 0.4836 32.7 0.0669 72.3 0.477 0.565

230.0 0.4988 38.4 0.0751 76.6 0.455 0.562

240.0 0.5134 44.0 0.0832 80.5 0.436 0.561

250.0 0.5276 49.6 0.0912 84.3 0.419 0.561

260.0 0.5413 55.3 0.0990 88.0 0.404 0.562

270.0 0.5547 60.9 0.1068 91.5 0.391 0.564

280.0 0.5677 66.6 0.1145 94.8 0.378 0.566

290.0 0.5805 72.2 0.1221 98.1 0.367 0.569

300.0 0.5931 77.9 0. 1297 101.3 0.357 0.572

320.0 0.6175 89.5 0.1447 107.4 0.339 0.579

340.0 0.6413 101. 1 0. 1594 113.2 0.323 0.587

360.0 . 6646 113.0 0.1740 118.8 0.309 0.595

380.0 0.6874 124.9 0.1885 124.3 0.296 0.604

400.0 0.7097 137. 1 0.2028 129.5 0.285 0.612

420.0 0.732 149.4 0.2170 134.7 0.275 0.621

440.0 0.754 162.0 0.2311 139.7 0.266 0.630

460.0 0.775 174.6 0.2450 144.7 0.257 0.639

480.0 0.796 187.5 0.2588 149.5 0.249 0.648

500.0 0.817 200.6 0.2726 154.3 0.242 0.657

520.0 0.838 213.8 0.2862 159.0 0.235 0.666

540.0 0.859 227.2 0.2998 163.6 0.229 0.675

560.0 0.879 240.8 0.3132 168.2 0.223 0.684

580.0 0.900 254.6 0.3266 172.8 0.217 0.693

600.0 0.920 268.5 0.3399 177.3 0.212 0.701
147-

Table B2.(G0nt.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg F

-40.0

-20.0

0.0

20.0

40.0

60.0

80.0

100.0

V

ft3/lb

0.02536

0.02582

0.02630

0.02682

0.02738

0.02799

0.02865

0.02939

LIQUID, P = 220 PSIA

H S DP/DD

BTU/lb BTU/(lb.F)

223.8

-213.8

-203.5

-193.0

-182.3

-171.3

-160.0

•148.3

110.0 0.02979

120.0 0.03021

130.0 0.03067

140.0 0.03115

150.0 0.03168

160.0 0.03225

170.0 0.03287

180.0 0.03357

190.0 0.03435

193.80 0.03468

COEXISTING VAPOR (x=

193.80 0.3910

142

136

130

123

117

111.0

104.3

-97.5

-90.5

-87.80

.0552)

18.6

-0.3729

-0.3496

-0.3269

-0.3046

-0.2827

-0.2611

-0.2398

-0.2187

-0.2081

-0.1976

-0.1871

-0.1765

-0.1660

-0. 1554

-0. 1447

-0. 1340

-0. 1231

-0. 1189

0.0397

VAPOR

COEXISTING LIQUID (x=.1701)

198.75 0.03441 -89.6 -0.1160

1992.

1832.

1667.

1502.

1340.

1183.

1031.

887.

818.

750.

684.

620.

558.

497.

438.

380.

324.

303.

DP/DT CP

BTU/(lb.F)

68

64

60

56

51.9

47.8

43.8

39.8

37.9

36.0

34.0

32

30

28

26

24

22.8

22.0

13

4

5

7

55.0 0.648

308. 22.0

0.494

0.508

0.519

0. 531

0.543

0.557

0.572

0.590

0.599

0.609

0.620

0.631

0.644

0.658

0.673

0.691

0.711

0.720

0.609

0.717

198 75 3891 17 9 0422 54 6 645 612

200 3913 18 6 0434 55 4 639 609

210 4084 24 7 0524 61 596 594

220 4244 30 6 0612 66 1 561 584

230 4394 36 4 0697 70 8 532 578

240 4536 42 2 0780 75 2 507 574

250 4673 47 9 0861 79 3 485 573

260 4805 53 6 0942 83 2 466 572

270 4933 59 4 1021 87 448 573

280 5058 65 1 1099 90 6 433 574

290 5179 70 9 1176 94 1 419 576

300 5298 76 6 1253 97 4 406 578

320 5529 88 3 1404 103 9 384 584

340 5752 100 1552 110 365 591

360 5970 111 9 1699 115 8 348 598

380 6182 124 1845 121 5 333 607

400 6390 136 2 1988 127 320 615

420 660 148 6 2131 132 3 308 624

440 680 161 1 2272 137 5 297 632

460 700 173 9 2412 142 6 288 641

480 719 186 8 2551 147 5 278 650

500 738 199 9 2689 152 4 270 659

520 758 213 1 2826 157 3 262 668

540 777 226 6 2961 162 255 677

560 796 240 2 3096 166 7 246 685

580 815 254 3230 171 3 242 694

600 833 267 9 3363 175 9 235 702
-148-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 240 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40 0.02536 -223 7 -0. 3730 2001. 68.7 0.494

-20 0.02581 -213 7 -0. 3497 1840. 64.6 0.508

0.02629 -203 5 -0. 3270 1675. 60.5 0.519

20 0.02681 -193 -0. 3047 1510. 56.3 0.530

40 0.02737 -182 3 -0. 2828 1347. 52.1 0.543

60 0.02797 -171 3 -0. 2613 1190. 48.0 0.557

80 0.02864 -159 9 -0 2399 1039. 44.0 0.572

100 0.02937 -148 3 -0. 2188 894. 40.0 0.589

110 0.02977 -142 4 -0 2083 825. 38.1 0.599

120 0.03019 -136 3 -0 1978 757. 36.1 0.609

130 0.03064 -130 2 -0 1872 691. 34.2 0.619

140 0.03112 -123 9 -0 1767 627. 32.3 0.631

150 0.03164 -117 5 -0 1662 565. 30.4 0.643

160 0.03221 -111 -0 1556 504. 28.6 0.656

170 0.03282 -104 4 -0 1450 445. 26.7 0.672

180 0.03351 -97 6 -0 1342 388. 24.9 0.689

190 0.03428 -90 6 -0 1234 332. 23.0 0.709

200 0.03516 -83 3 -0 1124 277. 21.1 0.733

201 91 0.03534 -81 91 -0 1102 267. 20.7 0.739

201 91 0.3534 20 6 0407 51.8 0.731 0.634

206 66 0.03508 -83 6 -0 1074 272. 20.7 0.735

206 66 0.3517 19 9 0431 51.4 0.728 0.636

210 0.3575 22 0463 53.5 0.709 0.628

220 0.3738 28 2 0555 59.3 0.660 0.610

230 0.3889 34 2 0643 64.6 0.620 0.598

240 0.4031 40 2 0729 69.5 0.586 0.591

250 0.4166 46 1 0813 74.1 0.558 0.586

260 0.4295 51 9 0895 78.3 0.533 0.583

270 0.4419 57 8 0975 82.4 0.512 0.582

280 0.4539 63 6 1054 86.2 0.492 0.582

290 0.4655 69 4 1133 89.9 0.475 0.583

300 0.4769 75 3 1210 93.5 0.460 0.585

320 0.4989 87 1363 100.3 0.432 0.589

340 0.5200 98 9 1513 106.7 0.409 0.595

360 0.5405 110 9 1661 112.8 0.390 0.602

380 0.5605 123 1807 118.7 0.372 0.610

400 0.5800 135 3 1952 124.4 0.357 0.618

420 0.599 147 7 2095 129.9 0.343 0.626

440 0.618 160 3 2236 135.2 0.330 0.635

460 0.636 173 1 2377 140.5 0.319 0.643

480 0.655 186 1 2516 145.6 0.309 0.652

500 0.673 199 2 2654 150.6 0.299 0.661

520 0.691 212 5 2791 155.5 0.290 0.669

540 0.709 225 9 2927 160.4 0.282 0.678

560 0.726 239 6 3063 165.2 0.274 0.687

580 .0 0.744 253 4 3197 169.9 0.267 0.695

600 0.761 267 4 3330 174.6 0.260 0.703
-149-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 260 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02535 -223.7 -0.3731 2011. 69.0 0.494

-20.0 0.02580 -213.6 -0.3498 1849. 64.9 0.507

0.0 0.02629 -203.4 -0.3271 1683. 60.7 0.519

20.0 0.02680 -192.9 -0.3048 1518. 56.5 0.530

40.0 0.02736 -182.2 -0.2829 1355. 52.3 0.542

60.0 0.02796 -171.2 -0.2614 1197. 48.2 0.556

80.0 0.02862 -159.9 -0.2401 1046. 44. 1 0.572

100.0 0.02935 -148.3 -0.2189 902. 40.2 0.589

110.0 0.02974 -142.3 -0.2084 832. 38.2 0.598

120.0 0.03016 -136.3 -0.1979 764. 36.3 0.608

130.0 0.03061 -130.2 -0. 1874 699. 34.4 0.619

140.0 0.03109 -123.9 -0.1769 635. 32.5 0.630

150.0 0.03161 -117.5 -0.1664 572. 30.6 0.642

160.0 0.03216 -111.0 -0.1558 512. 28.8 0.655

170.0 0.03278 -104.4 -0.1452 453. 26.9 0.670

180.0 0.03345 -97.6 -0. 1345 396. 25. 1 0.687

190.0 0.03421 -90.6 -0.1237 340. 23.2 0.706

200.0 0.03507 -83.4 -0.1127 285. 21.3 0.730

209.54 0.03603 -76.3 -0.1020 234. 19.5 0.758

COEXISTING VAPOR Cx=.0586)

209.54 0.3212 22.3 0.0416

VAPOR

48.5 0.820 0.660

COEXISTING LIQUID (x=.1620)

214.10 0.03577 -77.9 -0.0993 239. 19.5 0.754

214.10 0.3197 21.6 0.0439 48.2 0.817 0.662

220.0 0.3296 25.5 0.0497 52.1 0.777 0.645

230.0 0.3452 31.9 0.0589 58. 1 0.722 0.624

240.0 0.3596 38.0 0.0678 63.6 0.677 0.611

250.0 0.3730 44. 1 0.0765 68.6 0.640 0.602

260.0 0.3858 50. 1 0.0849 73.3 0.608 0.597

270.0 0.3979 56. 1 0.0931 77.6 0.581 0.594

280.0 0.4096 62.0 0. 1012 81.8 0.557 0.592

290.0 0.4209 68.0 0.1091 85.7 0.536 0.592

300.0 0.4319 73.9 0. 1170 89.5 0.517 0.592

320.0 0.4530 85.8 0.1324 96.7 0.484 0.595

340.0 0.4732 97.7 0. 1476 103.4 0.457 0.600

360.0 0.4927 109.8 0. 1625 109.8 0.433 0.606

380.0 0.5116 122.0 0. 1772 115.9 0.413 0.613

400.0 0.5301 134.3 0. 1917 121.8 0.395 0.621

420.0 0.548 146.8 0.2061 127.5 0.379 0.629

440.0 0.566 159.5 0.2203 133.0 0.365 0.637

460.0 0.583 172.3 0.2344 138.4 0.352 0.645

480.0 0.600 185.3 0.2483 143.6 0.340 0.654

500.0 0.617 198.5 0.2622 148.8 0.329 0.662

520.0 0.634 211.8 0.2759 153.8 0.319 0.671

540.0 0.651 225.3 0.2896 158.8 0.309 0.679

560.0 0.667 239.0 0.3031 163.7 0.300 0.688

580.0 0.684 252.8 0.3166 168.5 0.292 0.696

600.0 0.700 266.8 0.3299 173.3 0.285 0.705
-150-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 280 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02534 -223.6 -0.3732 2020. 69.2 0.494

-20.0 0.02580 -213.6 -0.3499 1858. 65.1 0.507

0.0 0.02628 -203.3 -0.3272 1692. 60.9 0.519

20.0 0.02679 -192.9 -0.3049 1525. 56.6 0.530

40.0 0.02735 -182.2 -0.2831 1363. 52.5 0.542

60.0 0.02795 -171.2 -0.2615 1205. 48.3 0.556

80.0 0.02860 -159.9 -0.2402 1053. 44.3 0.571

100.0 0.02933 -148.3 -0.2191 909. 40.3 0.588

110.0 0.02972 -142.3 -0.2086 839. 38.4 0.598

120.0 0.03014 -136.3 -0.1981 772. 36.5 0.607

130.0 0.03058 -130.1 -0.1876 706. 34.6 0.618

140.0 0.03106 -123.9 -0.1771 642. 32.7 0.629

150.0 0.03157 -117.5 -0.1666 580. 30.8 0.641

160.0 0.03212 -111. 1 -0. 1560 519. 29.0 0.654

170.0 0.03273 -104.4 -0. 1454 461. 27. 1 0.669

180.0 0.03339 -97.7 -0. 1348 403. 25.3 0.685

190.0 0.03414 -90.7 -0. 1240 348. 23.4 0.704

200.0 0.03498 -83.5 -0.1130 294. 21.6 0.726

210.0 0.03596 -76. 1 -0. 1019 240. 19.7 0.755

216.75 0.03673 -70.9 -0.0942 205. 18.4 0.780

COEXISTING VAPOR Cx=.0602)

216.75 0.2933 23.8 0.0423

VAPOR

45.2 0.915 0.689

COEXISTING LIQUID (x=.1584)

221. 13 0.03648 -72.4 -0.0916 209. 18.4 0.775

221. 13 0.2919 23.2 . 0446 44.9 0.911 0.691

230.0 0.3065 29.2 0.0533 51.1 0.843 0.660

240.0 0.3214 35.7 0.0627 57.3 0.782 0.637

250.0 0.3350 42.0 0.0716 62.9 0.733 0.623

260.0 0.3478 48.2 0.0803 68.0 0.692 0.613

270.0 0.3599 54.3 0.0887 72.7 0.657 0.607

280.0 0.3714 60.4 0.0970 77.2 0.628 0.603

290.0 0.3824 66.4 0.1051 81.4 0.601 0.601

300.0 0.3931 72.4 0.1130 85.5 0.578 0.601

320.0 0.4135 84.5 0. 1287 93. 1 0.539 0.602

340.0 0.4329 96.5 0.1440 100.1 0.506 0.605

360.0 0.4516 108.7 0.1590 106.8 0.479 0.611

380.0 0.4696 121.0 0.1738 113.1 0.455 0.617

400.0 0.4872 133.4 0.1884 119.2 0.435 0.624

420.0 0.504 146.0 0.2028 125.1 0.416 0.632

440.0 0.521 158.7 0.2171 130.8 0.400 0.639

460.0 0.538 171.5 0.2313 136.3 0.385 0.648

480.0 0.554 184.6 0.2453 141.7 0.372 0.656

500.0 0.570 197.8 0.2592 146.9 0.359 0.664

520.0 0.586 211. 1 0.2730 152.1 0.348 0.673

540.0 0.601 224.7 0.2866 157.2 0.337 0.681

560.0 0.617 238.4 0.3002 162.2 0.328 0.689

580.0 0.632 252.2 0.3137 167.1 0.318 0.697

600.0 0.647 266.3 0.3270 172.0 0.310 0.706
-151-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 300 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02534 -223.5 -0.3733 2029. 69.4 0.494

-20.0 0.02579 -213.5 -0.3500 1866. 65.3 0.507

0.0 0.02627 -203.3 -0.3273 1700. 61.1 0.519

20.0 0.02678 -192.8 -0.3050 1533. 56.8 0.530

40.0 0.02734 -182.1 -0.2832 1370. 52.6 0.542

60.0 0.02793 -171.1 -0.2616 1212. 48.5 0.556

80.0 0.02859 -159.8 -0.2403 1060. 44.5 0.571

100.0 0.02931 -148.2 -0.2192 916. 40.5 0.588

110.0 0.02970 -142.3 -0.2087 846. 38.5 0.597

120.0 0.03012 -136.3 -0. 1982 779. 36.6 0.607

130.0 0.03056 -130.1 -0. 1878 713. 34.7 0.617

140.0 0.03103 -123.9 -0. 1773 649. 32.8 0.628

150.0 0.03154 -117.5 -0. 1668 587. 31.0 0.640

160.0 0.03208 -111.1 -0. 1562 527. 29. 1 0.653

170.0 0.03268 -104.5 -0. 1457 468. 27.3 0.667

180.0 0.03334 -97.7 -0. 1350 411. 25.5 0.683

190.0 0.03407 -90.8 -0. 1243 356. 23.6 0.701

200.0 0.03490 -83.6 -0. 1134 302. 21.8 0.723

210.0 0.03586 -76.2 -0.1023 249. 19.9 0.751

220.0 0.03700 -68.6 -0.0909 197. 18.0 0.787

223.60 0.03747 -65.7 -0.0867 179. 17.3 0.804

COEXISTING VAPOR (x=.0619)

223.60 0.2687 25.2 0.0429

7AP0R

41.9 1.017 0.722

COEXISTING LIQUID (x=.1550)

227.80 0.03722 -67.0 -0.0842 182. 17.3 0.798

227.80 0.2676 24.6 0.0451 41.7 1.013 0.724

230.0 0.2714 26.2 0.0474 43.4 0.990 0.711

240.0 0.2872 33. 1 0.0574 50.5 0.905 0.672

250.0 0.3013 39.7 0.0667 56.8 0.840 0.649

260.0 0.3143 46. 1 0.0757 62.5 0.786 0.633

270.0 0.3264 52.4 0.0844 67.7 0.742 0.623

280.0 0.3379 58.6 0.0929 72.5 0.705 0.617

290.0 0.3488 64.8 0. 1011 77.0 0.673 0.612

300.0 0.3592 70.9 0. 1092 81.3 0.645 0.610

320.0 0.3791 83. 1 0. 1251 89.4 0.597 0.609

340.0 0.3979 95.3 0. 1405 96.8 0.559 0.611

360.0 0.4159 107.6 0. 1557 103.7 0.527 0.615

380.0 0.4332 120.0 0. 1706 110.3 0.500 0.621

400.0 0.4500 132.4 0. 1853 116.6 0.476 0.627

420.0 0.466 145. 1 0. 1998 122.7 0.455 0.634

440.0 0.482 157.8 0.2141 128.5 0.436 0.642

460.0 0.498 170.7 0.2283 134.2 0.420 0.650

480.0 0.513 183.8 0.2424 139.7 0.405 0.658

500.0 0.529 197.0 0.2563 145. 1 0.391 0.666

520.0 0.544 210.4 0.2701 150.4 0.378 0.674

540.0 0.558 224.0 0.2838 155.6 0.366 0.682

560.0 0.573 237.7 0.2974 160.7 0.355 0.691

580.0 0.587 251.6 0.3109 165.7 0.345 0.699

600.0 0.602 265.7 0.3243 170.7 0.336 0.707
-152-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 320 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02533 -223.5 -0.3733 2038. 69.7 0.493

-20.0 0.02578 -213.5 -0.3501 1875. 65.5 0.507

0.0 0.02626 -203.2 -0.3273 1708. 61.3 0.518

20.0 0.02677 -192.8 -0.3051 1541. 57.0 0.530

40.0 0.02732 -182.

1

-0.2833 1378. 52.8 0.542

60.0 0.02792 -171.

1

-0.2617 1219. 48.7 0.555

80.0 0.02857 -159.8 -0.2404 1068. 44.6 0.571

100.0 0.02929 -148.2 -0.2194 923. 40.7 0.588

120.0 0.03009 -136.2 -0. 1984 786. 36.8 0.606

140.0 0.03100 -123.9 -0.1775 656. 33.0 0.627

160.0 0.03204 -111. 1 -0. 1565 534. 29.3 0.652

180.0 0.03328 -97.7 -0. 1353 419. 25.7 0.681

200.0 0.03482 -83.7 -0. 1137 310. 22.0 0.720

210.0 0.03575 -76.4 -0.1027 257. 20.2 0.746

220.0 0.03686 -68.7 -0.0913 206. 18.3 0.781

230.0 0.03823 -60.7 -0.0796 155. 16.3 0.831

230. 12 0.03824 -60.6 -0.0794 154. 16.2 0.831

COEXISTING VAPOR (x=.0635)

230. 12 0.2470 26.3 0.0433 38.6 1.126 0.759

VAPOR

COEXISTING LIQUID (x=.1518)

234.14 0.03800 -61.8 -0.0771 158. 16.3 0.825

234 14 2460 25 8 0455 38 4 1 122 0.761

240 2559 30 2 0517 43 2 1 055 0.723

250 2709 37 2 0617 50 4 964 0.683

260 2843 43 9 0711 56 7 894 0.658

270 2967 50 4 0801 62 4 838 0.643

280 3082 56 8 0888 67 6 791 0.632

290 3190 63 1 0972 72 5 751 0.625

300 3294 69 3 1055 77 1 717 0.621

310 3393 75 5 1136 81 5 687 0.618

320 3489 81 7 1216 85 6 660 0.617

330 3582 87 9 1294 89 6 636 0.617

340 3672 94 1 1372 93 4 615 0.617

350 3760 100 3 1449 97 1 595 0.619

360 3846 106 5 1525 100 7 578 0.620

370 3930 112 7 1600 104 1 561 0.622

380 4013 118 9 1675 107 5 546 0.625

390 4094 125 2 1749 110 8 532 0.628

400 4174 131 5 1823 114 519 0.631

420 433 144 2 1969 120 3 495 0.637

440 448 157 2113 126 3 474 0.645

460 463 169 9 2255 132 1 455 0.652

480 478 183 1 2396 137 8 439 0.660

500 492 196 3 2536 143 3 423 0.668

520 507 209 8 2674 148 7 409 0.676

540 521 223 4 2812 154 396 0.684

560 535 237 1 2948 159 2 384 0.692

580 548 251 3083 164 4 373 0.700

600 .562 265 1 3218 169 4 362 0.708
153-

Table B2.(oont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

T

Deg F

-40.0

-20.0

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

180.0

200.0

210.0

220.0

230.0

236.34

V

ft3/lb

0.02532

0.02577

0.02625

0.02676

0.02731

0.02791

0.02856

0.02927

0.03007

0.03097

0.03201

0.03323

0.03474

0.03565

0.03673

0.03804

0.03906

LIQUID,

H

BTU/lb

223

-213,

-203

-192

-182

-171

-159.

-148.

-136

123

-111.

-97

-83.8

-76.5

-68.9

-60.9

-55.6

COEXISTING VAPOR (x=.0651)

236.34 0.2275 27.3

P = 340 PSIA

S DP/DD

BTU/(lb.F)

-0.3734

-0.3502

-0.3274

-0.3052

-0.2834

-0.2618

-0.2406

-0.2195

-0.1985

-0.1776

-0.1567

-0. 1355

-0. 1140

-0.1030

-0.0918

-0.0801

-0.0724

0.0436

2048.

1883.

1716.

1549.

1385.

1227.

1075.

930.

793.

663.

541.

426.

317.

265.

214.

164.

133.

35.3

DP/DT CP

BTU/(lb.F)

69.9

65.7

61.4

57.2

53.0

48.8

44.8

40.8

37.0

33.2

29.5

25.9

22

20

18

16

15

1.245

0.493

0.507

0.518

0.529

0.542

0.555

0.570

0.587

0.606

0.627

0.651

0.680

0.718

0.742

0.775

0.820

0.863

0.803

VAPOR

COEXISTING LIQUID (x=.1486)

240.19 0.03883 -56.7 -0.0702 136

240. 19

250.0

260.0

270.0

280.0

290.0

300.0

310.0

320.0

330.0

340.0

350.0

360.0

370.0

380.0

390.0

400.0

420.0

440.0

460.0

480.0

500.0

520.0

540.0

560.0

580.0

600.0

0.2266

0.2429

0.2571

0.2698

0.2815

0.2925

0.3028

0.3126

0.3221

0.3312

0.3400

0.3486

0.3569

0.3651

0.3731

0.3809

0.3887

0.4037

0.4184

0.4328

0.4468

0.4606

0.4742

0.4876

0.5009

0.5140

0.5269

26.8

34.3

41.4

48.2

54.8

61.3

67.7

74.0

80.3

86.5

92.8

99.0

105.3

111.6

117.8

124.2

130.5

143

156

169

182

195

209

222

236

250

264

0.0457

0.0563

0.0663

0.0757

0.0846

0.0933

0. 1018

0. 1100

0. 1181

0. 1261

0. 1339

0. 1417

0. 1494

0. 1570

0. 1645

0. 1720

0.1794

0. 1940

0.2085

0.2228

0.2370

0.2510

0.2649

0.2787

0.2923

0.3059

0.3193

35

43

50

56

62

1

4

5

9

6

67.9

72.8

77.4

81.8

86.0

90.0

93.9

97

101

104

108

111

6

2

7

1

4

117.9

124.1

130

135

141

147

152

157.8

163.0

168.1

15.3

1.240

1. 113

1.019

0.946

0.887

0.837

0.795

0.759

0.728

0.700

0.674

0.652

0.631

0.612

0.595

0.579

0.564

0.537

0.513

0.492

0.473

0.456

0.441

0.426

0.413

0.400

0.389

0.855

0.804

0.732

0.692

0.667

0.651

0.640

0.633

0.629

0.626

0.624

0.624

0.625

0.626

0.627

0.629

0.632

0.634

0.641

0.647

0.655

0.662

0.670

0.678

0.685

0.693

0.701

0.709
-154-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 360 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40 0.02532 -223.4 -0.3735 2057. 70.2 0.493

-20 0.02577 -213.4 -0.3502 1892. 65.9 0.507

0.02624 -203.1 -0.3275 1724. 61.6 0.518

20 0.02675 -192.7 -0.3053 1556. 57.4 0.529

40 0.02730 -182.0 -0.2835 1392. 53.1 0.541

60 0.02790 -171.0 -0.2620 1234. 49.0 0.555

80 0.02854 -159.7 -0.2407 1082. 44.9 0.570

100. 0.02925 -148.1 -0.2196 937. 41.0 0.587

120. 0.03005 -136.2 -0. 1987 800. 37.1 0.605

140. 0.03094 -123.9 -0. 1778 671. 33.4 0.626

160. 0.03197 -111.1 -0. 1569 548. 29.7 0.650

180. 0.03318 -97.8 -0. 1358 434. 26.1 0.678

200. 0.03466 -83.9 -0. 1143 325. 22.5 0.715

210. 0.03556 -76.6 -0.1034 273. 20.6 0.739

220. 0.03660 -69.0 -0.0922 223. 18.8 0.769

230. 0.03787 -61.1 -0.0807 173. 16.9 0.811

240. 0.03949 -52.7 -0.0685 124. 14.8 0.878

242. 31 0.03994 -50.7 -0.0656 113. 14.3 0.900

0EX3[STING VAPOR :x=.0668)

242 31 0.2099 28.1 0.0437

VAPOR

32.0 1.373 0.854

OEX][STING LIQUID (x=.1455)

245 97 0.03971 -51.7 -0.0635 115. 14.4 0.891

245 97 0.2091 27.7 0.0457 31.8 1.368 0.855

250 0.2163 31.0 0.0504 35.6 1.299 0.808

260 0.2319 38.7 0.0612 44.0 1.166 0.737

270 0.2453 45.9 0.0711 51.1 1.070 0.698

280 0.2574 52.7 0.0804 57.4 0.994 0.674

290 0.2685 59.4 0.0894 63.1 0.933 0.658

300 0.2789 65.9 0.0980 68.4 0.882 0.648

310 0.2887 72.4 0. 1065 73.3 0.838 0.640

320 0.2980 78.8 0. 1147 78.0 0.800 0.636

330 0.3070 85.1 0. 1228 82.4 0.767 0.633

340 0.3157 91.5 0. 1308 86.6 0.738 0.632

350 0.3241 97.8 0. 1386 90.6 0.711 0.631

360 0.3322 104. 1 0. 1464 94.5 0.687 0.631

370 0.3402 110.4 0. 1540 98.2 0.666 0.633

380 0.3479 116.8 0. 1616 101.9 0.646 0.634

390 0.3556 123.1 0.1691 105.4 0.628 0.636

400 0.3630 129.5 0. 1766 108.9 0.611 0.638

420 0.3776 142.3 0. 1913 115.5 0.580 0.644

440 0.3918 155.3 0.2059 121.9 0.554 0.650

460 0.4056 168.3 0.2203 128.0 0.530 0.657

480 .0 0.4191 181.5 0.2345 134.0 0.509 0.664

500 .0 0.4323 194.9 0.2485 139.8 0.490 0.672

520 .0 0.4453 208.4 0.2625 145.4 0.473 0.679

540 .0 0.4582 222.0 0.2763 150.9 0.457 0.687

560 .0 0.4708 235.9 0.2899 156.3 0.443 0.695

580 .0 0.4834 249.8 0.3035 161.6 0.429 0.703

600 .0 0.4957 264.0 0.3170 166.9 0.416 0.711
155-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 380 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40 0.02531 -223.3 -0.3736 2066. 70.4 0.493

-20 0.02576 -213.3 -0.3503 1900. 66.1 0.507

0.02624 -203.

-0.3276 1732. 61.8 0.518

20 0.02675 -192.6 -0.3054 1564. 57.5 0.529

40 0.02729 -181.9 -0.2836 1400. 53.3 0.541

60 0.02788 -170.9 -0.2621 1241. 49.2 0.555

80 0.02853 -159.7 -0.2408 1089. 45.1 0.570

100 0.02923 -148.1 -0.2198 944. 41.1 0.586

120 0.03002 -136.2 -0.1989 807. 37.3 0.605

140 0.03091 -123.9 -0. 1780 678. 33.5 0.625

160 0.03193 -111. 1 -0. 1571 556. 29.8 0.649

180 0.03313 -97.8 -0.1360 441. 26.2 0.677

200 0.03459 -83.9 -0.1146 333. 22.7 0.712

210 0.03547 -76.7 -0. 1037 281. 20.9 0.735

220 0.03648 -69.2 -0.0926 231. 19.0 0.764

230 0.03770 -61.4 -0.0812 182. 17.1 0.803

240 0.03924 -53.0 -0.0692 133. 15.2 0.862

248 03 0.04089 -45.8 -0.0589 94. 13.4 0.945

OEX][STING VAPOR (x=.0685)

248 03 0. 1938 28.7 0.0436 28.6 1.514 0.916

VAPOR

COEXISTING LIQUID (x=.1425)

251.51 0.04066 -46.7 -0.0569 97. 13.5 0.934

251 51 1931 28 3 0. 0455 28 5 1 508 917

260 2080 35 5 0. 0557 36 8 1 347 805

270 2226 43 2 0. 0663 44 9 1 214 740

280 2353 50 5 0. 0761 51 9 1 116 703

290 2467 57 4 0. 0854 58 1 1 039 680

300 2572 64 1 0943 63 8 976 664

310 2670 70 7 1030 69 1 924 654

320 2764 77 2 1114 74 878 647

330 2853 83 7 1196 78 7 839 643

340 2938 90 1 0. 1277 83 1 805 640

350 3021 96 5 1356 87 3 774 638

360 3101 102 9 1434 91 4 747 638

370 3178 109 3 1512 95 3 722 638

380 3254 115 7 1588 99 699 639

390 3328 122 1 1664 102 7 679 641

400 3401 128 5 1739 106 3 660 642

420 3542 141 4 1887 113 1 626 647

440 3679 154 4 2034 119 7 596 653

460 3812 167 5 2178 126 570 660

480 3942 180 8 2320 132 1 546 666

500 4070 194 1 2461 138 525 674

520 4195 207 7 2601 143 8 506 681

540 4318 221 4 2740 149 4 489 689

560 4440 235 2 2877 154 9 473 696

580 4560 249 3 3013 160 3 458 704

600 4678 263 4 3148 165 6 444 712
-156-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 400 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02530 -223.2 -0.3737 2075. 70.6 0.493

-20.0 0.02575 -213.2 -0.3504 1909. 66.3 0.507

0.0 0.02623 -203.0 -0.3277 1740. 62.0 0.518

20.0 0.02674 -192.6 -0.3055 1572. 57.7 0.529

40.0 0.02728 -181.9 -0.2837 1407. 53.5 0.541

60.0 0.02787 -170.9 -0.2622 1248. 49.3 0.554

80.0 0.02851 -159.6 -0.2410 1096. 45.3 0.569

100.0 0.02922 -148.1 -0.2199 951. 41.3 0.586

120.0 0.03000 -136.2 -0. 1990 814. 37.4 0.604

140.0 0.03088 -123.9 -0.1782 685. 33.7 0.625

160.0 0.03189 -111.1 -0. 1573 563. 30.0 0.648

180.0 0.03308 -97.9 -0.1363 448. 26.4 0.675

200.0 0.03452 -84.0 -0. 1149 341. 22.9 0.710

210.0 0.03538 -76.8 -0.1041 289. 21.1 0.732

220.0 0.03637 -69.3 -0.0930 239. 19.3 0.759

230.0 0.03755 -61.5 -0.0817 190. 17.4 0.796

240.0 0.03902 -53.3 -0.0698 142. 15.5 0.849

250.0 0.04100 -44.4 -0.0572 95. 13.4 0.943

253.53 0.04193 -41.0 -0.0523 78. 12.5 1.001

COEXISTING VAPOR (x=.0702)

253.53 0. 1789 29.0 0.0433

VAPOR

25.2 1.669 0.995

COEXISTING LIQUID (x=. 1394)

256.83 0.04170 -41.8 -0.0505 80. 12.6 0.988

256.83 0. 1783 28.7 0.0451 25.1 1.663 0.994

260.0 0.1846 31.7 0.0494 28.7 1.579 0.922

270.0 0.2011 40.3 0.0611 38.3 1.388 0.800

280.0 0.2147 48.0 0.0716 46.2 1.257 0.741

290.0 0.2266 55.2 0.0813 53.0 1.159 0.707

300.0 0.2374 62.2 0.0906 59.2 1.081 0.685

310.0 0.2473 68.9 0.0994 64.8 1.017 0.670

320.0 0.2567 75.6 0.1080 70.0 0.963 0.660

330.0 0.2655 82.2 0. 1164 75.0 0.917 0.653

340.0 0.2740 88.7 0. 1246 79.6 0.877 0.649

350.0 0.2822 95.2 0. 1326 84.0 0.841 0.646

360.0 0.2900 101.6 0.1405 88.2 0.810 0.645

370.0 0.2977 108.1 0. 1484 92.3 0.781 0.644

380.0 0.3051 114.5 0. 1561 96.2 0.756 0.644

390.0 0.3123 121.0 0.1637 100.0 0.732 0.645

400.0 0.3194 127.4 0.1713 103.7 0.711 0.647

420.0 0.3331 140.4 0.1862 110.8 0.672 0.651

440.0 0.3464 153.5 0.2009 117.5 0.639 0.656

460.0 0.3593 166.7 0.2154 124.0 0.610 0.662

480.0 0.3719 180.0 0.2297 130.2 0.585 0.669

500.0 0.3842 193.4 0.2439 136.3 0.561 0.676

520.0 0.3962 207.0 0.2579 142. 1 0.541 0.683

540.0 0.4081 220.7 0.2717 147.9 0.521 0.690

560.0 0.4198 234.6 0.2855 153.5 0.504 0.698

580.0 0.4313 248.7 0.2991 159.0 0.488 0.705

600.0 0.4427 262.8 0.3126 164.4 0.473 0.713
-157-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 420 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/Clb.F)

-40.0 0.02530 -223.2 -0.3737 2084. 70.9 0.493

-20.0 0.02575 -213.2 -0.3505 1917. 66.5 0.507

0.0 0.02622 -203.0 -0.3278 1748. 62.2 0.518

20.0 0.02673 -192.5 -0.3056 1579. 57.9 0.529

40.0 0.02727 -181.8 -0.2838 1415. 53.6 0.541

60.0 0.02786 -170.9 -0.2623 1255. 49.5 0.554

80.0 0.02850 -159.6 -0.2411 1103. 45.4 0.569

100.0 0.02920 -148.0 -0.2201 958. 41.4 0.585

120.0 0.02998 -136.

-0.1992 821. 37.6 0.604

140.0 0.03085 -123.8 -0. 1783 692. 33.8 0.624

160.0 0.03186 -111. 1 -0. 1575 570. 30.2 0.647

180.0 0.03303 -97.9 -0.1365 456. 26.6 0.674

200.0 0.03445 -84. 1 -0. 1152 348. 23. 1 0.708

210.0 0.03529 -76.9 -0. 1044 297. 21.3 0.729

220.0 0.03626 -69.5 -0.0934 247. 19.5 0.755

230.0 0.03740 -61.7 -0.0821 199. 17.7 0.789

240.0 0.03881 -53.6 -0.0704 151. 15.8 0.837

250.0 0.04066 -44.9 -0.0580 104. 13.7 0.918

258.83 0.04308 -36. 1 -0.0458 63. 11.7 1.073

COEXISTING VAPOR (:x=.0721)

258.83 0. 1651 29.2 0.0427

VAPOR

21.8 1.841 1.097

COEXISTING LIQUID (x=. 1363)

261.93 0.04285 -36.9 -0.0441 65. 11.7 1.057

261.93 0.1646 28.9 0.0445 21.8 1.834 1.095

270.0 0.1802 36.8 0.0554 31.0 1.605 0.896

280.0 0.1952 45.2 0.0668 40.0 1.424 0.794

290.0 0.2079 52.8 0.0771 47.7 1.296 0.741

300.0 0.2190 60. 1 0.0867 54.4 1.198 0.709

310.0 0.2292 67. 1 0.0958 60.4 1.120 0.689

320.0 0.2387 73.9 0. 1046 66.0 1.056 0.675

330.0 0.2476 80.6 0.1132 71.2 1.001 0.665

340.0 0.2560 87.2 0. 1215 76. 1 0.954 0.659

350.0 0.2641 93.8 0. 1297 80.7 0.913 0.655

360.0 0.2718 100.3 0. 1377 85. 1 0.876 0.652

370.0 0.2793 106.9 0. 1456 89.3 0.844 0.651

380.0 0.2866 113.4 0.1534 93.4 0.815 0.650

390.0 0.2937 119.9 0. 1611 97.3 0.788 0.651

400.0 0.3006 126.4 0. 1687 101. 1 0.764 0.651

420.0 0.3140 139.4 0.1837 108.4 0.721 0.655

440.0 0.3269 152.6 0.1985 115.3 0.684 0.659

460.0 0.3395 165.8 0.2131 122.0 0.652 0.665

480.0 0.3516 179.2 0.2274 128.3 0.624 0.671

500.0 0.3635 192.7 0.2416 134.5 0.598 0.678

520.0 0.3752 206.3 0.2557 140.5 0.576 0.685

540.0 0.3867 220. 1 0.2696 146.4 0.555 0.692

560.0 0.3979 234.0 0.2834 152. 1 0.536 0.699

580.0 0.4091 248. 1 0.2970 157.7 0.518 0.707

600.0 0.4200 262.3 0.3106 163.2 0.502 0.714
-158-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 440 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02529 -223.1 -0.3738 2093. 71. 1 0.493

-20.0 0.02574 -213.

1

-0.3506 1926. 66.7 0.506

0.0 0.02621 -202.9 -0.3279 1756. 62.4 0.518

20.0 0.02672 -192.5 -0.3057 1587. 58.1 0.529

40.0 0.02726 -181.8 -0.2839 1422. 53.8 0.541

60.0 0.02784 -170.8 -0.2624 1263. 49.6 0.554

80.0 0.02848 -159.6 -0.2412 1110. 45.6 0.569

100.0 0.02918 -148.0 -0.2202 965. 41.6 0.585

120.0 0.02996 -136.

1

-0.1993 828. 37.8 0.603

140.0 0.03083 -123.8 -0.1785 699. 34.0 0.623

160.0 0.03182 -111. 1 -0.1577 577. 30.4 0.646

180.0 0.03298 -97.9 -0. 1367 463. 26.8 0.672

200.0 0.03438 -84.1 -0.1155 356. 23.3 0.705

210.0 0.03521 -77.0 -0.1048 304. 21.5 0.726

220.0 0.03615 -69.6 -0.0938 255. 19.7 0.751

230.0 0.03726 -61.9 -0.0826 207. 17.9 0.783

240.0 0.03861 -53.9 -0.0710 160. 16.1 0.827

250.0 0.04036 -45.3 -0.0588 114. 14.1 0.898

260.0 0.04290 -35.6 -0.0453 68. 11.9 1.045

263.95 0.04438 -31.3 -0.0393 49. 10.9 1.172

COEXISTING VAPOR (x=.0740)

263.95 0.15199 29.0 0.0418 18.4 2.04 1.236

VAPOR

COEXISTING LIQUID (x=.1332)

266.83 0.04415 -31.9 -0.0377 51 10.9 1. 151

266..83 0.. 15161 28..7 0.,0435 18.,4 2.03 1.232

270.,0 0.,15889 32..4 0.,0485 22..7 1.90 1.079

280..0 0..17651 42..0 0,,0615 33.,5 1.63 0.872

290.,0 0., 19025 50.,2 0..0726 42.,0 1.46 0.786

300..0 0.,20198 57..8 0.,0827 49..4 1.33 0.740

310..0 0,.2125 65.,1 0,,0922 55.,9 1.234 0.711

320..0 0..2221 72.. 1 0,. 1013 61..9 1. 156 0.692

330..0 0..2310 79..0 0..1100 67..4 1.092 0.679

340..0 0.,2395 85..7 0,. 1185 72..5 1.037 0.670

350.,0 0.,2475 92..4 0.,1268 77..3 0.989 0.664

360..0 0.,2552 99.,0 0.. 1349 81,.9 0.947 0.660

370..0 0,,2626 105..6 0.. 1429 86.,3 0.910 0.658

380..0 0.,2698 112.,2 0.,1508 90.,5 0.877 0.656

390.,0 0,,2768 118..8 0.. 1585 94..6 0.847 0.656

400..0 0.,2835 125..3 0..1662 98.,5 0.820 0.656

420.,0 0.,2966 138..5 0., 1813 106.,0 0.772 0.659

440.,0 0,,3092 151.,7 0..1962 113.,2 0.731 0.663

460..0 0.,3214 165..0 0..2108 120..0 0.695 0.668

480.,0 0.,3332 178..4 0.,2252 126..5 0.664 0.674

500..0 0.,3448 191..9 0..2395 132,.8 0.636 0.680

520,,0 0,,3561 205..6 0.,2536 138,.9 0.611 0.687

540,.0 0..3672 219..4 0.,2675 144,,9 0.589 0.694

560,.0 0.,3781 233,.4 0..2814 150,.7 0.568 0.701

580,.0 0..3888 247,,4 0..2950 156,,4 0.549 0.708

600,.0 0..3994 261,.7 0..3086 162,.0 0.532 0.716
-159-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID P = 460 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 .02529 -223.

-.3739 2102. 71.3 .493

-20.0 .02573 -213.

-.3507 1934. 66.9 .506

.0 .02620 -202.8 -.3280 1764. 62.6 .517

20.0 .02671 -192.4 -.3058 1595. 58.2 .528

40.0 .02725 -181.7 -.2840 1429. 54.0 .540

60.0 .02783 -170.8 -.2625 1270. 49.8 .554

80.0 .02847 -159.5 -.2413 1117. 45.7 .568

100.0 .02916 -148.0 -.2203 972. 41.8 .585

120.0 .02993 -136.

-.1995 835. 37.9 .603

140.0 .03080 -123.8 -.1787 706. 34.2 .623

160.0 .03178 -111.

-. 1579 584. 30.5 .645

180.0 .03293 -98.0 -. 1370 470. 27.0 .671

200.0 .03431 -84.2 -. 1158 363. 23.5 .703

210.0 .03512 -77. 1 -.1051 312. 21.7 .723

220.0 .03605 -69.7 -.0942 263. 20.0 .747

230.0 .03713 -62. 1 -.0830 215. 18.2 .777

240.0 .03843 -54.1 -.0716 168. 16.4 .818

250.0 .04008 -45.6 -.0595 123. 14.4 .880

260.0 .04239 -36.3 -.0465 78. 12.3 .998

268.90 .04590 -26.3 -.0326 37. 10.0 1.314

COEXISTING VAPOR (x=.0762)

268.90 . 13947 28.5 .0406 15.0 2.26 1.437

COEXISTING LIQUID (x=.1298)

271.55 .04566 -26.9

VAPOR

0312 39 10.1 1.286

271.55 . 13919 28.3 .0421 15. 1 2.25 1.430

280.0 .15786 38. 1 .0555 26.3 1.88 1.002

290.0 . 17338 47.3 .0678 36. 1 1.64 .850

300.0 .18595 55.4 .0785 44.2 1.48 .779

310.0 .1969 63.0 .0885 51.3 1.362 .738

320.0 .2067 70.2 .0978 57.7 1.267 .712

330.0 .2158 77.3 .1068 63.5 1.190 .695

340.0 .2243 84. 1 . 1154 68.9 1. 125 .683

350.0 .2323 90.9 . 1239 74.0 1.070 .675

360.0 .2400 97.7 . 1321 78.8 1.022 .669

370.0 .2473 104.3 . 1402 83.3 .980 .665

380.0 .2544 111.0 . 1482 87.7 .942 .663

390.0 .2613 117.6 .1560 91.9 .908 .662

400.0 .2679 124.2 . 1638 96.0 .878 .662

420.0 .2808 137.5 . 1790 103.7 .824 .663

440.0 .2931 150.8 . 1939 111.0 .779 .666

460.0 .3049 164. 1 .2086 118.0 .740 .671

480.0 .3165 177.6 .2231 124.7 .706 .676

500.0 .3277 191.2 .2374 131. 1 .675 .682

520.0 .3386 204.9 .2516 137.4 .648 .689

540.0 .3494 218.7 .2655 143.4 .624 .696

560.0 .3599 232.7 .2794 149.4 .601 .703

580.0 .3703 246.8 .2931 155. 1 .581 .710

600.0 .3806 261. 1 .3067 160.8 .562 .717
-160-

Table B2.(G0nt.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID. P = 480 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02528 -223.0 -0.3740 2111. 71.5 0.493

-20.0 0.02572 -213.0 -0.3508 1943. 67.1 0.506

0.0 0.02620 -202.8 -0.3281 1772. 62.8 0.517

20.0 0.02670 -192.4 -0.3059 1602. 58.4 0.528

40.0 0.02724 -181.7 -0.2841 1437. 54.1 0.540

60.0 0.02782 -170.7 -0.2626 1277. 50.0 0.553

80.0 0.02845 -159.5 -0.2414 1124. 45.9 0.568

100.0 0.02914 -147.9 -0.2205 979. 41.9 0.584

120.0 0.02991 -136.1 -0.1996 842. 38.1 0.602

140.0 0.03077 -123.8 -0.1789 713. 34.3 0.622

160.0 0.03175 -111.1 -0. 1581 591. 30.7 0.644

180.0 0.03289 -98.0 -0.1372 477. 27.2 0.670

200.0 0.03425 -84.3 -0.1161 370. 23.7 0.701

210.0 0.03504 -77.1 -0. 1054 320. 21.9 0.720

220.0 0.03595 -69.8 -0.0945 271. 20.2 0.743

230.0 0.03700 -62.2 -0.0835 223. 18.4 0.772

240.0 0.03826 -54.3 -0.0721 177. 16.6 0.810

250.0 0.03983 -46.0 -0.0602 132. 14.7 0.865

260.0 0.04196 -36.8 -0.0475 88. 12.7 0.964

270.0 0.04544 -26.1 -0.0327 44. 10.3 1.226

273.69 0.04773 -21.1 -0.0258 27. 9.2 1.537

COEXISTING VAPOR (x=.0786)

273.69 0. 12725 27.5 0.0388 11.6 2.52 1.755

VAPOR

COEXISTING LIQUID (x=.1262)

276.07 0.04748 -21.6 -0.0246 28 9.2 1.496

276.07 0. 12707 27.,4 0.,0402 11.,7 2.51 1.741

280.0 0., 13813 33.. 1 0.,0480 18..0 2.24 1.278

290.0 0., 15687 43..9 0.,0624 29,.8 1.87 0.946

300.0 0., 17068 52..7 0.,0741 38,.8 1.66 0.831

3^10.0 0..1822 60..7 0.,0846 46,.5 1.505 0.772

320.0 0.,1924 68,.2 0.,0943 53.,4 1.390 0.736

330 . 0.,2017 75,.5 0., 1035 59,.6 1.297 0.713

340.0 0..2102 82,.5 0.,1124 65,.3 1.221 0.697

35Cr.O 0..2183 89,.4 0.,1210 70,.6 1.157 0.686

360.0 0,.2259 96,.3 0.,1294^ 75,.6 1.102 0.679

370.0 0,.2332 103,.0 0., 1376 80,.4 1.054 0.&73

38©'. 0..2402 109,.7 0., 1456 84,.9 1.011 0.670

390.0 0,.2470 116,.4 0..1535 89,.2 0.973 0.668

400.0 0..2536 123,. 1 0., 1614 93,.4 . 939 . 667

420.0- 0..2662 136,.5 0., 1767 101,,4 0.879 0.667

440.0 0,.2782 149,.8 0., 1917 108,.9 0.829 0.670

460.0 0..2898 163,.3 0.,2065 116,.0 0.786 0.674

480.0 0,.3011 17^,.8 0..2210 122,.9 0.749 0.679

500.0 0..3120 190,.4 0.,2354 129,.4 0.716 0.685

520.0 0..3226 204,.2 0..2496 135,.8 0.686 0.691

540.0 0..3331 218,. 1 0.,2636 142,.0 0.659 0.697

560.0 0..3433 232,. 1 0.,2775 148,.0 0.635 0.704

580.0 0..3534 246,.2 0.,2912 153,,9 0.613 0.711

600.0 0,.3633 260,.6 0.,3049 159,.7 0.593 0.718
-161-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUir), P = 500 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb. F) BTU/(lb.F)

-40.0 0.02527 -222.9 -0.3741 2120.

71.77 0.493

-20.0 0.02572 -212.9 -0.3508 1951.0 67.35 0.506

0.0 0.02619 -202.7 -0.3282 1779.6 62.94 0.517

20.0 0.02669 -192.3 -0.3060 1609.7 58.58 0.528

40.0 0.02723 -181.6 -0.2842 1443.9 54.30 0.540

60.0 0.02781 -170.7 -0.2627 1284.0 50. 11 0.553

80.0 0.02844 -159.5 -0.2416 1131.2 46.03 0.568

100.0 0.02913 -147.9 -0.2206 986.0 42.06 0.584

120.0 0.02989 -136.0 -0. 1998 848.7 38.21 0.602

140.0 0.03074 -123.8 -0. 1790 719.5 34.48 0.621

160.0 0.03171 -111. 1 -0. 1583 598.0 30.86 0.643

180.0 0.03284 -98.0 -0. 1374 484.2 27.33 0.668

200.0 0.03418 -84.3 -0. 1164 377.8 23.86 0.699

210.0 0.03497 -77.2 -0. 1057 327.1 22.13 0.718

220.0 0.03586 -69.9 -0.0949 278.2 20.41 0.740

230.0 0.03688 -62.4 -0.0839 230.8 18.66 0.767

240.0 0.03809 -54.5 -0.0726 185.0 16.89 0.802

250.0 0.03959 -46.3 -0.0608 140.5 15.05 0.853

260.0 0.04158 -37.3 -0.0484 97.2 13.09 0.936

270.0 0.04460 -27.2 -0.0343 54.4 10.87 1.125

278.35 0.05006 -15.6 -0.0185 17.2 8.33 1.937

COEXISTING VAPOR (x=.0815)

278.35 0. 11494 25.9 0.0362 8.3 2.85 2.328

COEXISTING LIQUID (x=.1221)

280.40 0.04980 -16.0

VAPOR

-0.0175 18.2 8.37 1.870

280 40 11486 25 8 0. 0374 8 4 2 84 2 .299

290 14016 39 7 0. 0562 22 9 2 17 1 .110

300 15591 49 6 0. 0693 33 2 1 86 903

310 16832 58 2 0. 0805 41 7 67 814

320 17896 66 1 0. 0907 49 53 765

330 18846 73 6 0. 1002 55 6 41 734

340 19717 80 8 0. 1093 61 6 33 713

350 20528 87 9 0. 1181 67 2 25 699

360 21293 94 8 0. 1266 72 4 19 689

370 22020 101 7 0. 1349 77 4 13 682

380 22717 108 5 0. 1431 82 1 08 678

390 23387 115 3 1511 86 6 04 675

400 24035 122 0. 1590 90 9 00 673

420 2528 135 4 1744 99 1 936 672

440 2646 148 9 1896 106 8 881 674

460 2759 162 4 2044 114 1 834 677

480 2869 176 2190 121 1 793 682

500 2975 189 7 2334 127 8 757 687

520 3079 203 5 2477 134 3 725 693

540 3181 217 4 2617 140 6 696 699

560 3280 231 4 2756 146 7 670 706

580 3378 245 6 2894 152 7 646 713

600 3474 260 3031 158 5 624 720
-162-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

LIQUID, P = 520 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb. F) BTU/(lb.F)

-40.0 0.02527 -222.9 -0.3741 2129.

1

71.99 0.493

-20.0 0.02571 -212.9 -0.3509 1959.4 67.55 0.506

0.0 0.02618 -202.7 -0.3283 1787.5 63.13 0.517

20.0 0.02668 -192.3 -0.3061 1617.2 58.75 0.528

40.0 0.02722 -181.6 -0.2843 1451.2 54.46 0.540

60.0 0.02779 -170.6 -0.2629 1291.1 50.26 0.553

80.0 0.02842 -159.4 -0.2417 1138.2 46.18 0.568

100.0 0.02911 -147.9 -0.2207 992.9 42.21 0.584

120.0 0.02987 -136.0 -0.1999 855.6 38.37 0.601

140.0 0.03072 -123.8 -0.1792 726.3 34.64 0.621

160.0 0.03168 -111.

1

-0. 1585 605.0 31.02 0.642

180.0 0.03279 -98.0 -0. 1377 491.3 27.50 0.667

200.0 0.03412 -84.4 -0.1166 385.0 24.05 0.697

210.0 0.03489 -77.3 -0.1060 334.5 22.33 0.715

220.0 0.03576 -70.0 -0.0952 285.8 20.62 0.736

230.0 0.03676 -62.5 -0.0843 238.6 18.90 0.762

240.0 0.03794 -54.7 -0.0731 193. 1 17.15 0.795

250.0 0.03937 -46.5 -0.0615 149.0 15.34 0.841

260.0 0.04124 -37.8 -0.0492 106.3 13.44 0.914

270.0 0.04393 -28.0 -0.0357 64.5 11.34 1.059

280.0 0.04931 -15.3 -0.0185 22.6 8.64 1.655

282.89 0.05335 -9.3 -0.0103 9.4 7.40 2.839

COEXISTING VAPOR (x=.0852)

282.89 0. 10179 23. 1 0.0321 5.0 3.28 3.646

VAPOR

COEXISTING LIQUID (x=.1170)

284.52 0.05306 -9.7 -0.0096 10.0 7.44 2.703

284.,52 0., 10182 23., 1 0.,0332 5..1 3,.27 3..568

290,,0 0.. 12212 34.,3 0.,0483 15,.3 2..59 1..467

300.,0 0.. 14136 46., 1 0..0640 27..3 2..12 1..012

310.,0 0., 15500 55.,5 0.,0762 36..7 1..86 0..870

320.,0 0,,16625 63.,8 0..0869 44..6 1..68 0..800

330..0 0,, 17608 71.,6 0.,0968 51..6 1..54 0.,759

340..0 0., 18497 79.,0 0.,1062 57..9 1..44 0,.732

350..0 0., 19317 86,,3 0.,1152 63..8 1..35 0,.714

360..0 0.,20086 93.,3 0., 1239 69..2 1..28 0,.701

370..0 0.,20812 100.,3 0., 1323 74,.4 1.,21 0,.692

380..0 0.,21505 107,,2 0., 1406 79,.3 1..16 0..686

390.,0 0.,22170 114.,0 0..1487 83,.9 1.,11 0,.682

400.,0 0.,22811 120.,8 0..1566 88,.4 1..07 0..679

420,.0 0,,2404 134.,4 0.. 1722 96,.8 0..995 0,.677

440,.0 0.,2520 147..9 0..1875 104,.7 0..935 0,.678

460,,0 0.,2631 161..5 0..2024 112,.2 0..883 0..680

480,,0 0.,2738 175..2 0..2171 119,,3 0..838 0,.684

500,.0 0.,2842 188..9 0..2315 126,.2 0..799 0,.689

520,.0 0,,2943 202..7 0..2458 132,.8 0.,764 0..695

540,.0 0..3042 216,.7 0..2599 139,.2 0.,733 0..701

560,.0 0..3139 230,.8 0..2739 145,.4 0..705 0..707

580,.0 0..3234 245,.0 0..2877 151,.5 0.,680 0..714

600,.0 0,.3328 259,.4 0..3014 157,.4 0..656 0..721
-163-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 540 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-20.0 0.02570 -212.8 -0.3510 1968. 67.8 0.506

0.0 0.02617 -202.6 -0.3283 1795. 63.3 0.517

20.0 0.02667 -192.2 -0.3062 1625. 58.9 0.528

40.0 0.02721 -181.5 -0.2844 1458. 54.6 0.540

60.0 0.02778 -170.6 -0.2630 1298. 50.4 0.553

80.0 0.02841 -159.4 -0.2418 1145. 46.3 0.567

100.0 0.02909 -147.8 -0.2209 1000. 42.4 0.583

110.0 0.02946 -142.0 -0.2105 930. 40.4 0.592

120.0 0.02985 -136.0 -0.2001 862. 38.5 0.601

130.0 0.03026 -129.9 -0. 1897 797. 36.6 0.610

140.0 0.03069 -123.8 -0. 1794 733. 34.8 0.620

150.0 0.03115 -117.5 -0. 1690 672. 33.0 0.630

160.0 0.03165 -111. 1 -0. 1587 612. 31.2 0.641

170.0 0.03218 -104.7 -0. 1483 554. 29.4 0.653

180.0 0.03275 -98.0 -0. 1379 498. 27.7 0.666

190.0 0.03337 -91.3 -0. 1274 444. 25.9 0.680

200.0 0.03406 -84.4 -0.1169 392. 24.2 0.695

210.0 0.03482 -77.4 -0. 1063 342. 22.5 0.713

220.0 0.03567 -70.1 -0.0956 293. 20.8 0.733

230.0 0.03665 -62.7 -0.0847 246. 19.1 0.758

240.0 0.03779 -54.9 -0.0735 201. 17.4 0.789

250.0 0.03917 -46.8 -0.0620 157. 15.6 0.831

260.0 0.04093 -38.2 -0.0500 115. 1 13.78 0.895

270.0 0.0434 -28.7 -0.0369 74. 1 11.77 1.012

280.0 0.0476 -17.2 -0.0213 34. 1 9.37 1.352

290.0 0.0987 25. 1 0.0355 6. 2 3.37 3.038

300.0 0.1266 41.9 0.0577 21. 2 2.44 1. 192

310.0 0. 1421 52.4 0.0715 31. 5 2.08 0.947

320.0 0. 1541 61 .3 0.0830 40. 1 1.85 0.844

330.0 . 1644 69.4 0.0933 47. 5 1.69 0.788

340.0 0. 1735 77.2 0. 1030 54. 2 1.56 0.753

350.0 0.1819 84.6 0. 1122 60. 4 1.46 0.730

360.0 0.1896 91.8 0. 1211 66. 1 1.37 0.714

370.0 0.1969 98.9 0. 1297 71. 4 1.30 0.703

380.0 0.2038 105.9 0. 1381 76. 5 1.24 0.695

390.0 0.2104 112.8 0. 1463 81 3 1.19 0.689

400.0 0.2168 119.7 0. 1543 85 9 1. 14 0.686

420.0 0.2289 133.4 0. 1700 94 5 1.06 0.682

440.0 0.2403 147.0 0. 1854 102 6 0.99 0.682

460.0 0.2512 160.6 0.2004 110 3 0.93 0.684

480.0 0.2617 174.3 0.2151 117 6 0.88 0.687

500.0 0.2719 188. 1 0.2296 124 5 0.84 0.692

520.0 0.2818 202.0 . 2440 131 3 0.80 0.697

540.0 0.2914 216.0 0.2581 137 8 0.77 0.703

560.0 0.3009 230.2 0.2721 144 1 0.74 0.709

580.0 0.3101 244.4 0.2860 150 3 0.71 0.716

600.0 0.3193 258.8 0.2997 156 3 0.69 0.722
-164-

Table B2.(G0nt.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 560 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40,,0 0.02525 -222.8 -0.3743 2147. 72.4 0.492

-20.,0 0.02570 -212.8 -0.3511 1976. 68.0 0.506

0..0 0.02616 -202.6 -0.3284 1803. 63.5 0.517

20,.0 0.02666 -192.2 -0.3063 1632. 59.1 0.528

40,,0 0.02720 -181.5 -0.2845 1466. 54.8 0.539

60,.0 0.02777 -170.5 -0.2631 1305. 50.6 0.552

80,.0 0.02839 -159.3 -0.2419 1152. 46.5 0.567

100,,0 0.02907 -147.8 -0.2210 1007. 42.5 0.583

110,.0 0.02944 -141.9 -0.2106 937. 40.6 0.591

120,.0 0.02983 -136.0 -0.2002 869. 38.7 0.600

130,.0 0.03023 -129.9 -0.1899 804. 36.8 0.610

140,.0 0.03066 -123.8 -0.1795 740. 34.9 0.619

150,,0 0.03112 -117.5 -0.1692 678. 33.1 0.630

160, 0.03161 -111.

1

-0.1588 619. 31.3 0.641

170,,0 0.03214 -104.7 -0.1485 561. 29.6 0.652

180,,0 0.03271 -98.1 -0.1381 505. 27.8 0.665

190,,0 0.03332 -91.3 -0.1277 451. 26.1 0.679

200,,0 0.03400 -84.5 -0. 1172 399. 24.4 0.694

210,,0 0.03475 -77.4 -0.1066 349. 22.7 0.711

220,,0 0.03559 -70.2 -0.0959 301. 21.0 0.731

230,.0 0.03654 -62.8 -0.0851 254. 19.3 0.754

240,,0 0.03765 -55. 1 -0.0740 209. 17.6 0.783

250,,0 0.03898 -47. 1 -0.0626 166. 15.9 0.822

260.,0 0.0406 -38.6 -0.0507 123.7 14.09 0.879

270.,0 0.0429 -29.3 -0.0379 83.4 12.16 0.977

280,,0 0.0465 -18.6 -0.0233 44.5 9.96 1.207

290,,0 0.0572 -1.2 0.0000 7.1 6.65 3.376

300,,0 0.1108 36.4 0.0500 14.7 2.89 1.548

310,.0 0.1294 48.9 0.0663 26.3 2.35 1.057

320,.0 0. 1425 58.6 0.0788 35.5 2.05 0.901

330,,0 0.1533 67.2 0.0897 43.5 1.85 0.824

340,,0 0.1627 75.2 0.0998 50.5 1.70 0.778

350,.0 0. 1712 82.8 0.1093 57.0 1.58 0.749

360,,0 0. 1791 90.2 0. 1183 62.9 1.48 0.729

370,,0 0. 1864 97.4 0. 1271 68.5 1.40 0.715

380,.0 0. 1933 104.5 0.1356 73.7 1.33 0.705

390,.0 0. 1999 111.5 0. 1439 78.6 1.27 0.698

400,,0 0.2062 118.5 0. 1520 83.4 1.21 0.693

420,.0 0.2182 132.3 0.1679 92.3 1.12 0.687

440,.0 0.2294 146.0 0. 1833 100.6 1.05 0.686

460,.0 0.2402 159.7 0.1984 108.4 0.99 0.687

480..0 0.2505 173.5 0.2132 115.8 0.93 0.690

500..0 0.2604 187.4 0.2278 123.0 0.89 0.694

520.,0 0.2701 201.3 0.2422 129.8 0.85 0.699

540.,0 0.2796 215.3 0.2564 136.4 0.81 0.705

560..0 0.2888 229.5 0.2704 142.8 0.78 0.711

580..0 0.2978 243.8 0.2843 149. 1 0.75 0.717

600.,0 0.3067 258.2 0.2980 155.2 0.72 0.724
-165-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 580 PSIA

T V H S DP/DI) DP/DT CP

Deg F ft3/lb BTU/lb BTU/Clb.F) BTU/(lb.F)

-40.0 0.02525 -222.7 -0.3744 2156. 72.7 0.492

-20.0 0.02569 -212.7 -0.3512 1984. 68.2 0.506

0.0 0.02616 -202.5 -0.3285 1811. 63.7 0.517

20.0 0.02665 -192.1 -0.3064 1640. 59.3 0.528

40.0 0.02719 -181.4 -0.2846 1473. 54.9 0.539

60.0 0.02776 -170.5 -0.2632 1312. 50.7 0.552

80.0 0.02838 -159.3 -0.2421 1159. 46.6 0.567

100.0 0.02906 -147.8 -0.2211 1013. 42.7 0.582

110.0 0.02942 -141.9 -0.2107 944. 40.7 0.591

120.0 0.02981 -135.9 -0.2004 876. 38.8 0.600

130.0 0.03021 -129.9 -0.1900 810. 36.9 0.609

140.0 0.03064 -123.7 -0. 1797 747. 35. 1 0.619

150.0 0.03109 -117.5 -0. 1694 685. 33.3 0.629

160.0 0.03158 -111.1 -0.1590 626. 31.5 0.640

170.0 0.03210 -104.7 -0. 1487 568. 29.7 0.651

180.0 0.03266 -98.1 -0.1383 512. 28.0 0.664

190.0 0.03327 -91.4 -0.1279 458. 26.3 0.677

200.0 0.03394 -84.5 -0.1174 407. 24.6 0.692

210.0 0.03468 -77.5 -0.1069 356. 22.9 0.709

220.0 0.03550 -70.3 -0.0962 308. 21.2 0.728

230.0 0.03644 -62.9 -0.0854 262. 19.6 0.750

240.0 0.03751 -55.3 -0.0744 217. 17.9 0.778

250.0 0.03880 -47.3 -0.0631 174. 16.2 0.814

260.0 0.04038 -38.9 -0.0514 132. 14.4 0.866

270.0 0.04248 -29.8 -0.0389 92. 12.5 0.948

280.0 0.04561 -19.6 -0.0249 54. 10.5 1.120

290.0 0.05217 -6.0 -0.0066 18. 7.8 1.813

300.0 0.0924 28.5 0.039O 8. 3 3.62 2.457

310. a 0. 1166 44.8 0.0603 21. 2.69 1.226

320.0^ 0.1313 55.6 0.0743 31. 2.28 0.975

330.0 0.1428 64.7 0.085a 39. 4 2.03 0.867

340.0 0. 1525 73. 1 0.0964 46. 9 1.84 0.807

350.0 0. 1613 81.0 0.1062 53r. 6 1.70 0.770

360.0 0. 1692 88.5 0.1155 59. 8 1.59 0.745

370.0 0.1766 95.9 0.1245 65. 5 1.50 0.727

&80.0 0. 1835 103. 1 0.1331 70. 9 1.42 0.715

390.0 0. 1901 110.2 0.1415 76 1 1.35 0.706

400.0 0. 1963 117.3 a. 149'^ 80 9 1.29 0.700

420.0 0'. 2082 131.2 0.1658 90 1 1. 19 0.693

440.0 0.2193 145.0 0-1813 98 6 1. 11 0.691

460.0 0.2299 158.8 0.1965 106 6 1.04 0.691

480.0 0.2400 172.7 0.2114 114 1 0.98 0.693

500.0 0.2498 186.6 0.2260 121 4 0.93 0.697

520.0 0.2593 200.6 0.2404 128 4 0.89 0.702

540.0 0.2685 214.7 0.2547 135 1 0.85 0.707

560.0 0.2775 228.9 0.2687 141 6 0.82 0.713

580.0 0.2863 243.2 0.2827 148 0.78 0.719

600.0 0.2950 257.7 0.2964 154 1 0.76 0.725
-166-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 600 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02524 -222.6 -0.3745 2165. 72.9 0.492

-20.0 0.02568 -212.7 -0.3513 1993. 68.3 0.506

0.0 0.02615 -202.5 -0.3286 1819. 63.9 0.517

20.0 0.02665 -192.0 -0.3065 1647. 59.4 0.527

40.0 0.02718 -181.4 -0.2847 1480. 55.1 0.539

60.0 0.02775 -170.5 -0.2633 1319. 50.9 0.552

80.0 0.02837 -159.3 -0.2422 1166. 46.8 0.566

100.0 0.02904 -147.7 -0.2213 1020. 42.8 0.582

110.0 0.02940 -141.9 -0.2109 950. 40.9 0.591

120.0 0.02978 -135.9 -0.2005 883. 39.0 0.599

130.0 0.03019 -129.9 -0.1902 817. 37. 1 0.609

140.0 0.03061 -123.7 -0.1798 754. 35.3 0.618

150.0 0.03107 -117.5 -0. 1695 692. 33.4 0.628

160.0 0.03155 -111. 1 -0. 1592 632. 31.7 0.639

170.0 0.03207 -104.7 -0.1489 575. 29.9 0.650

180.0 0.03262 -98. 1 -0. 1385 519. 28.2 0.663

190.0 0.03323 -91.4 -0.1281 465. 26.5 0.676

200.0 0.03388 -84.6 -0. 1177 414. 24.8 0.690

210.0 0.03461 -77.6 -0. 1072 364. 23.1 0.707

220.0 0.03542 -70.4 -0.0966 315. 21.4 0.725

230.0 0.03633 -63.0 -0.0858 269. 19.8 0.747

240.0 0.03739 -55.4 -0.0749 224. 18.1 0.773

250.0 0.03863 -47.5 -0.0636 181. 16.4 0.807

260.0 0.04014 -39.2 -0.0520 140. 14.7 0.854

270.0 0.04210 -30.3 -0.0398 101. 12.9 0.925

280.0 0.0449 -20.5 -0.0263 64. 10.9 1.060

290.0 0.0499 -8.3 -0.0100 29. 8.6 1.445

300.0 0.0709 15.9 0.0221 5. 4 4.98 3.828

310.0 0. 1034 39.8 0.0533 15. 9 3.12 1.499

320.0 0. 1203 52.2 0.0693 26. 5 2.55 1.075

330.0 0. 1326 62. 1 0.0820 35. 4 2.23 0.921

340.0 0. 1429 70.9 0.0930 43. 2 2.01 0.841

350.0 0. 1518 79.0 0.1031 50. 2 1.84 0.794

360.0 0. 1599 86.8 0. 1127 56. 7 1.71 0.763

370.0 0. 1673 94.3 0.1218 62. 6 1.60 0.742

380.0 0. 1743 101.7 0.1306 68. 2 1.51 0.727

390.0 0. 1809 108.9 0.1391 73. 5 1.44 0.716

400.0 0. 1871 116.0 0.1475 78. 5 1.37 0.708

420.0 0. 1989 130. 1 0.1637 87. 9 1.26 0.699

440.0 0.2099 144.0 0. 1793 96. 6 1. 17 0.695

460.0 0.2203 157.9 0.1946 104. 7 1.10 0.695

480.0 0.2303 171.8 0.2096 112. 5 1.03 0.696

500.0 0.2399 185.8 0.2243 119. 9 0.98 0.700

520.0 0.2492 199.8 0.2387 126. 9 0.93 0.704

540.0 0.2582 214.0 0.2530 133. 8 0.89 0.709

560.0 0.2670 228.2 0.2671 140. 4 0.85 0.714

580.0 0.2756 242.6 0.2811 146. 8 0.82 0.720

600.0 0.2841 257. 1 0.2949 153. 1 0.79 0.727
-167-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 620 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02524 -222.6 -0.3745 2174. 73. 1 0.492

-20.0 0.02568 -212.6 -0.3514 2001. 68.5 0.505

0.0 0.02614 -202.4 -0.3287 1827. 64.0 0.516

20.0 0.02664 -192.0 -0.3066 1655. 59.6 0.527

40.0 0.02717 -181.3 -0.2848 1487. 55.3 0.539

60.0 0.02773 -170.4 -0.2634 1326. 51.0 0.552

80.0 0.02835 -159.2 -0.2423 1173. 46.9 0.566

100.0 0.02902 -147.7 -0.2214 1027. 43.0 0.582

110.0 0.02938 -141.8 -0.2110 957. 41.0 0.590

120.0 0.02976 -135.9 -0.2007 890. 39.1 0.599

130.0 0.03016 -129.8 -0.1903 824. 37.2 0.608

140.0 0.03059 -123.7 -0. 1800 760. 35.4 0.618

150.0 0.03104 -117.5 -0. 1697 699. 33.6 0.628

160.0 0.03152 -111. 1 -0. 1594 639. 31.8 0.638

170.0 0.03203 -104.7 -0.1491 582. 30.1 0.650

180.0 0.03258 -98.1 -0.1387 526. 28.3 0.662

190.0 0.03318 -91.4 -0. 1284 472. 26.6 0.675

200.0 0.03383 -84.6 -0. 1179 421. 25.0 0.689

210.0 0.03454 -77.6 -0. 1075 371. 23.3 0.705

220.0 0.03534 -70.5 -0.0969 323. 21.6 0.723

230.0 0.03624 -63.1 -0.0862 276. 20.0 0.743

240.0 0.03726 -55.6 -0.0753 232. 18.3 0.769

250.0 0.03846 -47.7 -0.0641 189. 16.7 0.800

260.0 0.03992 -39.5 -0.0526 148. 15.0 0.843

270.0 0.04177 -30.8 -0.0406 109. 13.2 0.906

280.0 0.04431 -21.2 -0.0275 72. 11.3 1.016

290.0 0.04845 -9.9 -0.0124 38. 2 9.2 1.272

300.0 0.05915 7.0 0.0100 10. 7 6.4 2.440

310.0 0.0898 33.5 0.0446 11. 7 3.72 1.933

320.0 0.1094 48.4 0.0639 22. 2 2.88 1.212

330.0 0.1229 59.2 0.0777 31. 5 2.46 0.987

340.0 0.1336 68.5 0.0894 39. 6 2.19 0.881

350.0 0.1429 77.0 0.1000 46. 9 1.99 0.821

360.0 0.1511 85.0 0.1098 53. 6 1.84 0.783

370.0 0.1587 92.7 0.1191 59. 8 1.72 0.757

380.0 0.1657 100.2 0.1281 65. 5 1.61 0.739

390.0 0.1722 107.5 0.1368 71 1.53 0.726

400.0 0.1785 114.8 0.1452 76 1 1.45 0.717

420.0 0.1902 129.0 0. 1616 85. 7 1.33 0.705

440.0 0.2011 143.0 0. 1774 94 6 1.23 0.700

460.0 0.2113 157.0 0. 1927 103 1. 15 0.699

480.0 0.2211 171.0 0.2078 110 8 1.09 0.700

500.0 0.2306 185.0 0.2225 118 3 1.03 0.702

520.0 0.2397 199.1 0.2371 125 5 0.98 0.706

540.0 0.2485 213.3 0.2514 132 5 0.93 0.711

560.0 0.2572 227.6 0.2655 139 2 0.89 0.716

580.0 0.2656 242 . 0.2795 145 7 0.86 0.722

600.0 0.2739 256.5 0.2933 152 1 0.83 0.728
-168-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 640 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02523 -222.5 -0.3746 2182. 73.3 0.492

-20.0 0.02567 -212.5 -0.3514 2009. 68.7 0.505

0.0 0.02613 -202.3 -0.3288 1834. 64.2 0.516

20.0 0.02663 -191.9 -0.3067 1662. 59.8 0.527

40.0 0.02716 -181.3 -0.2849 1495. 55.4 0.539

60.0 0.02772 -170.4 -0.2635 1333. 51.2 0.552

80.0 0.02834 -159.2 -0.2424 1180. 47.1 0.566

100.0 0.02901 -147.7 -0.2215 1034. 43. 1 0.581

110.0 0.02937 -141.8 -0.2111 964. 41.2 0.590

120.0 0.02974 -135.9 -0.2008 896. 39.3 0.598

130.0 0.03014 -129.8 -0.1905 831. 37.4 0.608

140.0 0.03056 -123.7 -0. 1802 767. 35.6 0.617

150.0 0.03101 -117.5 -0.1699 705. 33.7 0.627

160.0 0.03148 -111. 1 -0.1596 646. 32.0 0.638

170.0 0.03199 -104.7 -0.1493 588. 30.2 0.649

180.0 0.03254 -98.1 -0. 1390 533. 28.5 0.661

190.0 0.03313 -91.5 -0. 1286 479. 26.8 0.673

200.0 0.03377 -84.6 -0.1182 428. 25. 1 0.687

210.0 0.03448 -77.7 -0.1077 378. 23.5 0.703

220.0 0.03526 -70.6 -0.0972 330. 21.8 0.720

230.0 0.03614 -63.2 -0.0865 284. 20.2 0.740

240.0 0.03714 -55.7 -0.0757 239. 18.5 0.764

250.0 0.03831 -47.9 -0.0646 197. 16.9 0.794

260.0 0.03971 -39.8 -0.0532 156. 15.2 0.834

270.0 0.04146 -31.2 -0.0413 118. 13.5 0.890

280.0 0.04380 -21.8 -0.0286 81. 11.7 0.982

290.0 0.04736 -11.2 -0.0143 47. 3 9.7 1.168

300.0 0.05460 2.8 0.0042 18. 7 7.3 1.755

310.0 0.0764 26.0 0.0345 9. 6 4.53 2.357

320.0 0.0987 44.0 0.0578 18. 4 3.28 1.394

330.0 0. 1134 56.1 0.0732 27. 8 2.73 1.070

340.0 0.1248 66.0 0.0857 36. 2 2.39 0.929

350.0 0. 1344 74.9 0.0967 43. 7 2.16 0.852

360.0 0.1428 83.2 0. 1069 50. 6 1.98 0.805

370.0 0. 1505 91.1 0. 1165 57. 1.84 0.774

380.0 0. 1575 98.7 0. 1256 62. 9 1.72 0.752

390.0 0. 1641 106.2 0. 1344 68. 5 1.63 0.737

400.0 0. 1704 113.5 0. 1430 73. 8 1.54 0.726

420.0 0. 1820 127.8 0. 1595 83. 6 1.41 0.712

440.0 0. 1928 142.0 0. 1754 92. 7 1.30 0.705

460.0 0.2029 156. 1 0. 1909 101. 2 1.21 0.703

480.0 0.2126 170.1 0.2060 109. 2 1. 14 0.703

500.0 0.2219 184.2 0.2208 116. 9 1.08 0.705

520.0 0.2308 198.4 0.2354 124. 2 1.02 0.709

540.0 0.2395 212.6 0.2498 131. 2 0.98 0.713

560.0 0.2480 226.9 0.2640 138. 0.93 0.718

580.0 0.2562 241.4 0.2780 144. 6 0.90 0.724

600.0 0.2643 255.9 0.2919 151. 1 0.86 0.730
-169-

Table B2.(coiit.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 660 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/li) BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02522 -222.5 -0.3747 2191. 73.5 0.492

-20.0 0.02566 -212.5 -0.3515 2017. 68.9 0.505

0.0 0.02613 -202.3 -0.3289 1842. 64.4 0.516

20.0 0.02662 -191.9 -0.3068 1670. 59.9 0.527

40.0 0.02715 -181.2 -0.2850 1502. 55.6 0.539

60.0 0.02771 -170.3 -0.2636 1340. 51.3 0.551

80.0 0.02832 -159.1 -0.2425 1186. 47.2 0.566

100.0 0.02899 -147.6 -0.2217 1040. 43.2 0.581

110.0 0.02935 -141.8 -0.2113 971. 41.3 0.589

120.0 0.02972 -135.8 -0.2009 903. 39.4 0.598

130.0 0.03012 -129.8 -0. 1906 837. 37.5 0.607

140.0 0.03054 -123.7 -0. 1803 774. 35.7 0.616

150.0 0.03098 -117.4 -0.1700 712. 33.9 0.626

160.0 0.03145 -111.

-0.1598 653. 32.1 0.637

170.0 0.03196 -104.7 -0. 1495 595. 30.4 0.648

180.0 0.03250 -98.1 -0.1392 540. 28.7 0.660

190.0 0.03308 -91.5 -0. 1288 486. 27.0 0.672

200.0 0.03372 -84.7 -0. 1184 435. 25.3 0.686

210.0 0.03442 -77.7 -0.1080 385. 23.6 0.701

220.0 0.03519 -70.6 -0.0975 337. 22.0 0.718

230.0 0.03605 -63.3 -0.0868 291. 20.4 0.737

240.0 0.03703 -55.9 -0.0761 247. 18.8 0.760

250.0 0.03816 -48.1 -0.0651 205. 17.1 0.789

260.0 0.03951 -40.0 -0.0538 164. 15.5 0.825

270.0 0.04117 -31.5 -0.0420 126. 13.8 0.876

280.0 0.04335 -22.4 -0.0296 90. 12.0 0.954

290.0 0.04650 -12.2 -0.0159 56. 10.1 1.099

300.0 0.05207 0.3 0.0007 27. 8.0 1.458

310.0 0.06625 19.1 0.0252 11. 5.45 2.256

320.0 0.0883 39. 1 0.0510 15. 5 3.77 1.610

330.0 0. 1043 52.7 0.0683 24. 4 3.04 1. 171

340.0 0.1164 63.4 0.0818 32. 9 2.62 0.985

350.0 0. 1263 72.7 0.0934 40. 6 2.34 0.888

360.0 0. 1350 81.3 0.1039 47. 7 2.13 0.830

370.0 0.1427 89.4 0.1137 54. 2 1.97 0.793

380.0 0.1499 97.2 0.1231 60. 3 1.84 0.767

390.0 0.1565 104.7 0.1320 66. 1 1.73 0.749

400.0 0.1627 112.2 0. 1407 71. 5 1.64 0.735

420.0 0.1743 126.7 0.1574 81. 6 1.49 0.719

440.0 0.1850 141.0 0.1735 90. 8 1.37 0.711

460.0 0. 1951 155.2 0.1891 99. 5 1.27 0.707

480.0 0.2046 169.3 0.2043 107. 7 1.20 0.706

500.0 0.2137 183.4 0.2192 115. 4 1.13 0.708

520.0 0.2225 197.6 0.2338 122. 9 1.07 0.711

540.0 0.2310 211.9 0.2482 130. 1.02 0.715

560.0 0.2393 226.3 0.2625 136. 9 0.97 0.720

580.0 0.2474 240.7 0.2765 143. 6 0.93 0.725

600.0 0.2554 255.3 0.2904 150. 1 0.90 0.731
-170-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 680 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02522 -222.4 -0.3748 2200. 73.8 0.492

-20.0 0.02566 -212.4 -0.3516 2025. 69. 1 0.505

0.0 0.02612 -202.2 -0.3290 1850. 64.6 0.516

20.0 0.02661 -191.8 -0.3068 1677. 60. 1 0.527

40.0 0.02714 -181.2 -0.2851 1509. 55.7 0.538

60.0 0.02770 -170.3 -0.2637 1347. 51.5 0.551

80.0 0.02831 -159.

1

-0.2427 1193. 47.4 0.565

100.0 0.02897 -147.6 -0.2218 1047. 43.4 0.581

110.0 0.02933 -141.8 -0.2114 977. 41.5 0.589

120.0 0.02970 -135.8 -0.2011 910. 39.6 0.598

130.0 0.03010 -129.8 -0.1908 844. 37.7 0.607

140.0 0.03051 -123.7 -0.1805 780. 35.8 0.616

150.0 0.03095 -117.4 -0.1702 719. 34.0 0.626

160.0 0.03142 -111. 1 -0.1599 659. 32.3 0.636

170.0 0.03192 -104.7 -0.1497 602. 30.5 0.647

180.0 0.03246 -98.2 -0.1394 547. 28.8 0.659

190.0 0.03304 -91.5 -0.1291 493. 27.1 0.671

200.0 0.03367 -84.7 -0. 1187 441. 25.5 0.684

210.0 0.03435 -77.8 -0.1083 392. 23.8 0.699

220.0 0.03511 -70.7 -0.0978 344. 22.2 0.716

230.0 0.03596 -63.4 -0.0872 298. 20.6 0.734

240.0 0.03692 -56.0 -0.0764 254. 19.0 0.757

250.0 0.03802 -48.3 -0.0655 212. 17.4 0.783

260.0 0.03932 -40.3 -0.0543 172. 15.7 0.817

270.0 0.04091 -31.9 -0.0427 134. 14. 1 0.863

280.0 0.04295 -22.9 -0.0305 98. 12.4 0.932

290.0 0.04579 -13.0 -0.0173 65. 10.6 1.049

300.0 0.05037 -1.4 -0.0019 35. 8.6 1.296

310.0 0.06008 14.2 0.0185 15. 5 6.28 1.879

320.0 0.0788 33.8 0.0439 14. 4.36 1.787

330.0 0.0956 49.0 0.0632 21. 5 3.40 1.287

340.0 0. 1083 60.5 0.0777 29. 9 2.87 1.049

350.0 0. 1187 70.3 0.0899 37. 7 2.53 0.928

360.0 0. 1275 79.3 0. 1009 44. 9 2.29 0.858

370.0 0. 1354 87.6 0.1110 51. 6 2. 11 0.813

380.0 0. 1426 95.6 0.1205 57. 8 1.96 0.782

390.0 0. 1493 103.3 0.1297 63. 7 1.84 0.761

400.0 0. 1555 110.8 0. 1385 69. 2 1.73 0.746

420.0 0. 1671 125.5 0. 1554 79. 5 1.57 0.726

440.0 0. 1777 140.0 0. 1716 89. 1.44 0.716

460.0 0. 1876 154.2 0. 1873 97. 8 1.34 0.711

480.0 0. 1970 168.4 0.2026 106. 1 1.25 0.710

500.0 0.2060 182.6 0.2175 114. 1.18 0.711

520.0 0.2147 196.9 0.2322 121. 5 1. 12 0.714

540.0 0.2231 211.2 0.2467 128. 8 1.06 0.717

560.0 0.2312 225.6 0.2610 135. 8 1.02 0.722

580.0 0.2392 240. 1 0.2750 142. 6 0.97 0.727

600.0 0.2470 254.8 0.2890 149. 2 0.93 0.733
-171-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 700 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/Clb.F)

-40.0 0.02521 -222.3 -0.3749 2209. 74.0 0.492

-20.0 0.02565 -212.4 -0.3517 2034. 69.3 0.505

0.0 0.02611 -202.2 -0.3291 1858. 64.7 0.516

20.0 0.02660 -191.8 -0.3069 1684. 60.3 0.527

40.0 0.02713 -181.

-0.2852 1516. 55.9 0.538

60.0 0.02769 -170.2 -0.2639 1354. 51.6 0.551

80.0 0.02830 -159.0 -0.2428 1200. 47.5 0.565

100.0 0.02896 -147.6 -0.2219 1054. 43.5 0.580

110.0 0.02931 -141.7 -0.2116 984. 41.6 0.589

120.0 0.02968 -135.8 -0.2012 916. 39.7 0.597

130.0 0.03008 -129.8 -0.1909 851. 37.8 0.606

140.0 0.03049 -123.6 -0. 1807 787. 36.0 0.615

150.0 0.03093 -117.4 -0. 1704 726. 34.2 0.625

160.0 0.03139 -111.1 -0.1601 666. 32.4 0.635

170.0 0.03189 -104.7 -0. 1499 609. 30.7 0.646

180.0 0.03242 -98.2 -0. 1396 553. 29.0 0.658

190.0 0.03299 -91.5 -0. 1293 500. 27.3 0.670

200.0 0.03362 -84.7 -0.1189 448. 25.6 0.683

210.0 0.03429 -77.8 -0. 1085 399. 24.0 0.697

220.0 0.03504 -70.8 -0.0981 351. 22.4 0.714

230.0 0.03587 -63.5 -0.0875 305. 20.8 0.732

240.0 0.03681 -56.1 -0.0768 261. 19.2 0.753

250.0 0.03788 -48.4 -0.0659 220. 17.6 0.778

260.0 0.03914 -40.5 -0.0548 179. 16.0 0.810

270.0 0.04066 -32.2 -0.0433 142. 14.4 0.852

280.0 0.04258 -23.3 -0.0313 106. 12.7 0.913

290.0 0.04518 -13.8 -0.0185 73. 10.9 1.010

300.0 0.04911 -2.8 -0.0040 44. 9. 1 1. 194

310.0 0.05636 10.9 0.0140 21. 6 6.98 1.589

320.0 0.0708 28.7 0.0370 14. 5 5.00 1.823

330.0 0.0874 45.0 0.0577 19. 5 3.80 1.404

340.0 0.1007 57.5 0.0734 27. 2 3. 16 1.121

350.0 0.1114 67.9 0.0864 35. 2.75 0.973

360.0 0. 1205 77.2 0.0978 42. 3 2.47 0.888

370.0 0. 1285 85.8 0. 1082 49. 1 2.26 0.835

380.0 0. 1358 93.9 0. 1180 55. 4 2.09 0.799

390.0 0. 1425 101.8 0. 1273 61. 4 1.95 0.774

400.0 0. 1487 109.5 0.1362 67. 1 1.84 0.756

420.0 0.1603 124.3 0. 1534 77. 6 1.65 0.734

440.0 0.1708 138.9 0. 1697 87. 2 1.52 0.722

460.0 0.1806 153.3 0. 1855 96. 2 1.40 0.716

480.0 0. 1899 167.6 0.2009 104 6 1.31 0.714

500.0 0.1988 181.8 0.2159 112 6 1.23 0.714

520.0 0.2073 196.2 0.2307 120 3 1. 17 0.716

540.0 0.2156 210.5 0.2452 127 6 1. 11 0.720

560.0 0.2236 225.0 0.2595 134 7 1.06 0.724

580.0 0.2314 239.5 0.2736 141 6 1.01 0.729

600.0 0.2390 254.2 0.2876 148 2 0.97 0.734
-172-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 750 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02520 -222.2 -0.3751 2231. 74.5 0.492

-20.0 0.02563 -212.2 -0.3519 2054. 69.8 0.505

0.0 0.02609 -202.0 -0.3293 1877. 65.2 0.516

20.0 0.02658 -191.6 -0.3072 1703. 60.7 0.526

40.0 0.02710 -181.0 -0.2855 1534. 56.3 0.538

60.0 0.02766 -170.1 -0.2641 1371. 52.0 0.550

80.0 0.02826 -158.9 -0.2431 1217. 47.9 0.564

100.0 0.02892 -147.5 -0.2222 1071. 43.9 0.580

110.0 0.02927 -141.6 -0.2119 1001. 41.9 0.588

120.0 0.02964 -135.7 -0.2016 933. 40.0 0.596

130.0 0.03002 -129.7 -0. 1913 867. 38.2 0.605

140.0 0.03043 -123.6 -0. 1810 803. 36.4 0.614

150.0 0.03086 -117.4 -0. 1708 742. 34.6 0.624

160.0 0.03132 -111.1 -0.1606 683. 32.8 0.634

170.0 0.03180 -104.7 -0. 1503 625. 31.1 0.644

180.0 0.03233 -98.2 -0. 1401 570. 29.4 0.655

190.0 0.03289 -91.6 -0. 1298 517. 27.7 0.667

200.0 0.03349 -84.8 -0. 1195 465. 26.0 0.680

210.0 0.03415 -78.0 -0. 1092 416. 24.4 0.693

220.0 0.03487 -70.9 -0.0988 368. 22.8 0.709

230.0 0.03566 -63.8 -0.0883 323. 21.2 0.725

240.0 0.03656 -56.4 -0.0777 279. 19.7 0.745

250.0 0.03757 -48.8 -0.0670 238. 18.1 0.768

260.0 0.03873 -41.0 -0.0560 198. 16.6 0.795

270.0 0.04012 -32.9 -0.0448 161. 15.0 0.830

280.0 0.04180 -24.3 -0.0332 125. 13.4 0.876

290.0 0.04396 -15.2 -0.0210 93. 11.8 0.943

300.0 0.04691 -5.3 -0.0078 63. 10.1 1.048

310.0 0.05139 6.0 0.0070 39. 8.33 1.230

320.0 0.05900 19.7 0.0246 23. 2 6.53 1.494

330.0 0.07085 35.2 . 0444 19. 3 5.00 1.529

340.0 0.0837 49.4 0.0622 23. 2 4.01 1 . 294

350.0 0.0949 61.3 0.0770 29. 7 3.39 1.098

360.0 0. 1045 71.6 0.0897 36. 6 2.98 0.975

370.0 0. 1128 81.0 0.1010 43. 4 2.68 0.897

380.0 0. 1203 89.7 0. 1115 49. 9 2.45 0.846

390.0 0. 1271 98.0 0. 1213 56. 1 2.27 0.811

400.0 0. 1334 105.9 0. 1306 62. 2.12 0.786

420.0 0. 1448 121.3 0. 1483 72. 9 1.89 0.754

440.0 0. 1552 136.2 0. 1651 83. 1.71 0.737

460.0 0. 1648 150.9 0. 1812 92. 3 1.58 0.728

480.0 0. 1739 165.4 0. 1968 101. 1 1.47 0.723

500.0 0. 1825 179.8 0.2120 109. 3 1.37 0.722

520.0 0. 1907 194.3 0.2269 117. 2 1.30 0.723

540.0 0. 1986 208.8 0.2415 124. 8 1.23 0.725

560.0 0.2063 223.3 0.2559 132. 1 1.17 0.729

580.0 0.2138 238.0 0.2702 139. 2 1.12 0.733

600.0 0.2211 252.7 0.2842 146. 1.07 0.738
-173-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 800 PSIA

T V H S DP/DE) DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02518 -222.0 -0.3753 2252. 75.0 0.491

-20.0 0.02562 -212.-0.3521 2074. 70.3 0.505

0.0 0.02607 -201.9 -0.3295 1896. 65.6 0.515

20.0 0.02656 -191.5 -0.3074 1721. 61. 1 0.526

40.0 0.02708 -180.9 -0.2857 1551. 56.6 0.537

60.0 0.02763 -170.0 -0.2644 1389. 52.4 0.550

80.0 0.02823 -158.8 -0.2434 1234. 48.2 0.564

100.0 0.02888 -147.4 -0.2226 1087. 44.2 0.579

110.0 0.02922 -141.6 -0.2122 1017. 42.3 0.587

120.0 0.02959 -135.6 -0.2019 949. 40.4 0.595

130.0 0.02997 -129.6 -0.1917 883. 38.5 0.604

140.0 0.03037 -123.5 -0.1814 820. 36.7 0.613

150.0 0.03080 -117.4 -0.1712 758. 34.9 0.622

160.0 0.03125 -111. 1 -0.1610 699. 33.2 0.632

170.0 0.03172 -104.7 -0.1508 642. 31.4 0.642

180.0 0.03223 -98.2 -0.1406 586. 29.7 0.653

190.0 0.03278 -91.6 -0.1304 533. 28.1 0.664

200.0 0.03337 -84.9 -0.1201 482. 26.4 0.677

210.0 0.03401 -78.1 -0.1098 433. 24.8 0.690

220.0 0.03470 -71.1 -0.0995 386. 23.3 0.704

230.0 0.03547 -63.9 -0.0891 340. 21.7 0.720

240.0 0.03632 -56.7 -0.0786 297. 20.2 0.738

250.0 0.03728 -49.2 -0.0679 255. 18.6 0.758

260.0 0.03837 -41.5 -0.0572 216. 17.1 0.782

270.0 0.03964 -33.5 -0.0462 179. 15.6 0.812

280.0 0.04115 -25.2 -0.0348 144. 14.1 0.849

290.0 0.04302 -16.4 -0.0231 112. 12.5 0.899

300.0 0.04543 -7.1 -0.0107 82. 11.0 0.971

310.0 0.04873 3.2 0.0027 56. 8 9.37 1.077

320.0 0.05361 14.7 0.0175 37. 3 7.75 1.232

330.0 0.06103 27.8 0.0343 26. 3 6.23 1.375

340.0 0.07089 41.6 0.0517 24. 2 5.01 1.348

350.0 0.0812 54.4 0.0676 27. 5 4.16 1.201

360.0 0.0907 65.7 0.0814 33. 3.58 1.064

370.0 0.0992 75.9 0.0937 39. 2 3.17 0.966

380.0 0.1068 85.2 0.1049 45. 5 2.86 0.899

390.0 0. 1136 93.9 0.1152 51. 6 2.62 0.852

400.0 0. 1200 102.3 0.1250 57. 6 2.43 0.819

420.0 0. 1314 118.2 0.1433 68. 8 2. 14 0.777

440.0 0. 1416 133.5 0.1605 79. 1 1.93 0.753

460.0 0. 1511 148.4 0.1769 88. 7 1.76 0.740

480.0 0. 1599 163.2 0.1928 97. 8 1.63 0.733

500.0 0. 1682 177.8 0.2082 106. 3 1.52 0.730

520.0 0. 1762 192.4 0.2232 114. 4 1.43 0.730

540.0 0. 1838 207.0 0.2380 122. 2 1.35 0.731

560.0 0. 1912 221.7 0.2525 129. 7 1.28 0.734

580.0 0.1984 236.4 0.2668 137. 1.22 0.737

600.0 0.2054 251.3 0.2810 144. 1. 17 0.742
-174-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 850 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02517 -221.9 -0.3754 2274. 75.6 0.491

-20.0 0.02560 -211.9 -0.3523 2094. 70.7 0.504

0.0 0.02606 -201.8 -0.3297 1915. 66.0 0.515

20.0 0.02654 -191.4 -0.3076 1739. 61.5 0.526

40.0 0.02705 -180.8 -0.2860 1569. 57.0 0.537

60.0 0.02760 -169.9 -0.2647 1406. 52.7 0.549

80.0 0.02820 -158.7 -0.2436 1250. 48.6 0.563

100.0 0.02884 -147.3 -0.2229 1104. 44.6 0.578

110.0 0.02918 -141.5 -0.2126 1033. 42.6 0.586

120.0 0.02954 -135.6 -0.2023 965. 40.7 0.594

130.0 0.02992 -129.6 -0. 1920 900. 38.9 0.603

140.0 0.03031 -123.5 -0.1818 836. 37. 1 0.612

150.0 0.03073 -117.3 -0. 1716 775. 35.3 0.621

160.0 0.03118 -111.0 -0. 1614 715. 33.5 . 630

170.0 0.03164 -104.7 -0. 1512 658. 31.8.- . 640

180.0 0.03214 -98.2 -0. 1411 603. 30.-1 0.651

190.0 0.03268 -91.6 -0.1309 550. 28.5 0.662

200.0 0.03325 -85.0 -0.1207 499. 26.8 0.674

210.0 0.03387 -78. 1 -0. 1104 449. 25 . 2 0.686

220.0 0.03455 -71.2 -0.1001 402. 23 . 7 0.700

230.0 0.03529 -64. 1 -0.0898 357. 22.1 0.715

240.0 0.03610 -56.9 -0.0794 314. 20.6 0.731

250.0 0.03701 -49.5 -0.0689 273. 19.1 0.750

260.0 0.03804 -41.9 -0.0582 234. 17.6 0.772

270.0 0.03922 -34.0 -0.0474 197. 16.1 0.797

280.0 0.04060 -25.9 -0.0363 162. 14.7 0.829

290.0 0.04226 -17.4 -0.0249 130. 13.2 0.868

300.0 0.04431 -8.4 -0.0130 100. 11.7 0.921

310.0 0.04696 1. 1 -0.0005 74. 10.2 0.993

320.0 0.05056 11.6 0.0129 53. 8.7 1.090

330.0 0.05563 23. 1 0.0276 37. 9 7.30 1.203

340.0 0.06257 35.5 0.0432 30. 3 6.03 1.269

350.0 0.07093 48. 1 0.0589 29. 2 5.01 1.227

360.0 0.07955 59.9 0.0733 32. 1 4.27 1.126

370.0 0.0877 70.6 0.0864 36. 9 3.74 1.028

380.0 0.0952 80.5 0.0982 42. 4 3.34 0.951

390.0 0.1020 89.8 0. 1092 48. 2 3.03 0.895

400.0 0. 1083 98.5 0.1194 54. 2.79 0.854

420.0 0.1196 115.0 0.1384 65. 2 2.42 0.801

440.0 0. 1298 130.7 0.1560 75. 7 2.16 0.771

460.0 0. 1390 146.0 0.1728 85. 5 1.96 0.753

480.0 0. 1476 160.9 0.1889 94. 8 1.81 0.744

500.0 0.1557 175.8 0.2045 103. 5 1.68 0.739

520.0 0. 1635 190.5 0.2197 111. 9 1.57 0.737

540.0 0. 1709 205.3 0.2346 119. 9 1.48 0.737

560.0 0. 1780 220. 1 0.2492 127. 5 1.40 0.739

580.0 0. 1849 234.9 0.2636 135. 1.34 0.742

600.0 0. 1917 249.8 0.2779 142. 1 1.27 0.746
-175-

Table B2.Ccont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 900 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02516 -221.7 -0.3756 2295. 76. 1 0.491

-20.0 0.02559 -211.8 -0.3525 2114. 71.2 0.504

0.0 0.02604 -201.6 -0.3299 1934. 66.5 0.515

20.0 0.02652 -191.2 -0.3079 1757. 61.8 0.525

40.0 0.02703 -180.6 -0.2862 1586. 57.4 0.536

60.0 0.02758 -169.8 -0.2649 1423. 53. 1 0.549

80.0 0.02816 -158.6 -0.2439 1267. 48.9 0.562

100.0 0.02880 -147.2 -0.2232 1120. 44.9 0.577

110.0 0.02914 -141.4 -0.2129 1050. 43.0 0.585

120.0 0.02 950 -135.5 -0.2026 982. 41. 1 0.593

130.0 0.02987 -129.5 -0. 1924 916. 39.2 0.602

140.0 0.03026 -123.4 -0. 1822 852. 37.4 0.610

150.0 0.03067 -117.3 -0. 1720 791. 35.6 0.619

160.0 0.03111 -111.0 -0. 1618 731. 33.9 0.629

170.0 0.03157 -104.7 -0. 1517 674. 32.2 0.639

180,0 0.03206 -98.2 -0. 1415 619. 30.5 0.649

190.0 0.03258 -91.7 -0. 1314 566. 28.8 0.660

200.0 0.03314 -85.0 -0. 1212 515. 27.2 0.671

210.0 0.03375 -78.2 -0. 1110 466. 25.6 0.683

220.0 0.03440 -71.3 -0. 1008 419. 24. 1 0.696

230.0 0.03511 -64.3 -0.0905 374. 22.6 0.710

240.0 0.03590 -57. 1 -0.0802 331. 21. 1 0.726

250.0 0.03677 -49.7 -0.0697 290. 19.6 0.743

260.0 0.03774 -42.2 -0.0592 251. 18.1 0.763

270.0 0.03884 -34.5 -0.0485 214. 16.7 0.785

280.0 0.04011 -26.5 -0.0376 180. 15.2 0.812

290.0 0.04161 -18.2 -0.0265 147. 13.8 0.845

300.0 0.04341 -9.5 -0.0150 118. 12.4 0.886

310.0 0.04565 -0.4 -0.0031 92. 11.0 0.939

320.0 0.04853 9.4 0.0095 69. 9.6 1.007

330.0 0.05233 19.8 0.0228 52. 8.2 1.088

340.0 0.05739 31. 1 0.0370 40. 1 6.96 1.160

350.0 0.06376 42.9 0.0517 34. 7 5.88 1.182

360.0 0.07097 54.6 0.0660 34. 3 5.02 1. 140

370.0 0.07833 65.6 0.0794 36. 9 4.36 1.067

380.0 0.0854 75.9 0.0918 41. 2 3.86 0.994

390.0 0.0920 85.6 0. 1032 46. 2 3.48 0.934

400.0 0.0982 94.7 0. 1138 51 . 6 3. 18 0.888

420.0 0. 1094 111.8 0. 1335 62. 4 2.73 0.825

440.0 0. 1193 127.9 0. 1516 72. 8 2.42 0.789

460.0 0. 1284 143.5 0. 1687 82. 8 2. 18 0.767

480.0 0. 1368 158.7 0. 1851 92. 2 2.00 0.754

500.0 0. 1447 173.7 0.2009 101. 1 1.85 0.747

520.0 0. 1522 188.6 0.2163 109. 6 1.73 0.744

540.0 0. 1594 203.5 0.2313 117. 7 1.62 0.743

560.0 0. 1663 218.4 0.2461 125. 6 1.53 0.744

580.0 0. 1730 233.4 0.2606 133 1 1.45 0.747

600.0 0. 1795 248.4 0.2749 140 5 1.38 0.750
-176-

Table B2.(G0nt.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 950 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02514 -221.6 -0.3758 2317. 76.6 0.491

-20.0 0.02557 -211.6 -0.3527 2134. 71.7 0.504

0.0 0.02602 -201.5 -0.3301 1953. 66.9 0.514

20.0 0.02650 -191.1 -0.3081 1775. 62.2 0.525

40.0 0.02701 -180.5 -0.2865 1604. 57.7 0.536

60.0 0.02755 -169.6 -0.2652 1439. 53.4 0.548

80.0 0.02813 -158.5 -0.2442 1283. 49.3 0.562

100.0 0.02876 -147.1 -0.2235 1136. 45.2 0.577

110.0 0.02910 -141.3 -0.2132 1066. 43.3 0.584

120.0 0.02945 -135.4 -0.2030 998. 41.4 0.592

130.0 0.02982 -129.4 -0.1927 932. 39.6 0.601

140.0 0.03021 -123.4 -0.1826 868. 37.7 0.609

150.0 0.03061 -117.2 -0.1724 807. 36.0 0.618

160.0 0.03104 -111.0 -0.1623 747. 34.2 0.627

170.0 0.03149 -104.7 -0.1521 690. 32.5 0.637

180.0 0.03198 -98.2 -0.1420 635. 30.8 0.647

190.0 0.03249 -91.7 -0.1319 582. 29.2 0.658

200.0 0.03304 -85.1 -0.1217 531. 27.6 0.669

210.0 0.03362 -78.3 -0.1116 482. 26.0 0.680

220.0 0.03426 -71.4 -0.1014 435. 24.5 0.693

230.0 0.03495 -64.4 -0.0912 390. 23.0 0.706

240.0 0.03570 -57.3 -0.0809 347. 21.5 0.721

250.0 0.03654 -50.0 -0.0706 307. 20.0 0.737

260.0 0.03746 -42.5 -0.0601 268. 18.6 0.755

270.0 0.03850 -34.9 -0.0496 231. 17.2 0.775

280.0 0.03969 -27.0 -0.0388 197. 15.8 0.798

290.0 0.04106 -18.9 -0.0279 165. 14.4 0.826

300.0 0.04267 -10.4 -0.0167 135. 13.0 0.860

310.0 0.04462 -1.6 -0.0052 108. 11.7 0.901

320.0 0.04703 7.7 0.0068 85. 10.3 0.952

330.0 0.05008 17.5 0.0193 66. 9.0 1.012

340.0 0.05399 27.9 0.0324 52. 7.81 1.072

350.0 0.05889 38.9 . 0460 43. 2 6.70 1.113

360.0 0.06469 50. 1 0.0598 39. 5 5.77 1.113

370.0 0.0710 61.1 0.0731 39. 5 5.02 1.075

380.0 0.0774 71.6 0.0856 42. 4.43 1.020

390.0 0.0836 81.5 0.0974 45. 8 3.97 0.965

400.0 0.0896 90.9 0. 1084 50. 4 3.61 0.918

420.0 0. 1004 108.5 0.1287 60. 4 3.07 0.849

440.0 0. 1102 125.1 0.1473 70. 6 2.69 0.807

460.0 0. 1191 140.9 0.1647 80. 5 2.41 0.781

480.0 0. 1273 156.4 0.1814 90. 2.20 0.766

500.0 0. 1350 171.6 0. 1974 99. 2.03 0.756

520.0 0. 1423 186.7 0.2130 107. 6 1.88 0.751

540.0 0. 1492 201.8 0.2281 115. 9 1.76 0.750

560.0 0. 1559 216.8 0.2430 123. 8 1.66 0.750

580.0 0. 1624 231.8 0.2576 131. 5 1.57 0.751

600.0 0. 1687 246.9 0.2720 139. 1.50 0.754
-177-

Table B2.(cont.) THERMODYNAMIC PROPERTIES OF THE 0.1 MOLE

FRACTION ISOPENTANE IN ISOBUTANE MIXTURE ALONG ISOBARS

SUPERCRITICAL PRESSURES

P = 1000 PSIA

T V H S DP/DD DP/DT CP

Deg F ft3/lb BTU/lb BTU/(lb.F) BTU/(lb.F)

-40.0 0.02513 -221.4 -0.3760 2338. 77.1 0.491

-20.0 0.02555 -211.5 -0.3529 2154. 72.1 0.504

0.0 0.02600 -201.3 -0.3304 1972. 67.3 0.514

20.0 0.02648 -191.0 -0.3083 1793. 62.6 0.525

40.0 0.02698 -180.4 -0.2867 1621. 58.1 0.536

60.0 0.02752 -169.5 -0.2654 1456. 53.8 0.548

80.0 0.02810 -158.4 -0.2445 1300. 49.6 0.561

100.0 0.02873 -147.0 -0.2238 1152. 45.6 0.576

110.0 0.02906 -141.2 -0.2135 1082. 43.6 0.584

120.0 0.02941 -135.3 -0.2033 1014. 41.7 0.591

130.0 0.02977 -129.4 -0.1931 948. 39.9 0.600

140.0 0.03015 -123.3 -0.1829 884. 38.1 0.608

150.0 0.03055 -117.2 -0. 1728 822. 36.3 0.617

160.0 0.03098 -111.0 -0. 1627 763. 34.5 0.626

170.0 0.03142 -104.6 -0.1526 706. 32.8 0.635

180.0 0.03189 -98.2 -0.1425 651. 31.2 0.645

190.0 0.03240 -91.7 -0.1324 598. 29.5 0.655

200.0 0.03293 -85.1 -0. 1223 547. 28.0 0.666

210.0 0.03351 -78.4 -0.1122 498. 26.4 0.677

220.0 0.03413 -71.5 -0. 1020 451. 24.9 0.689

230.0 0.03479 -64.6 -0.0918 407. 23.4 0.702

240.0 0.03552 -57.5 -0.0816 364. 21.9 0.716

250.0 0.03632 -50.2 -0.0714 323. 20.4 0.731

260.0 0.03720 -42.8 -0.0610 284. 19.0 0.747

270.0 0.03819 -35.2 -0.0506 248. 17.6 0.766

280.0 0.03930 -27.5 -0.0400 213. 16.3 0.787

290.0 0.04057 -19.5 -0.0292 181. 14.9 0.811

300.0 0.04204 -11.2 -0.0183 152. 13.6 0.840

310.0 0.04377 -2.6 -0.0071 125. 12.3 0.873

320.0 0.04586 6.3 0.0045 101. 11.0 0.913

330.0 0.04842 15.7 0.0164 81. 9.7 0.959

340.0 0.05158 25.5 0.0288 65. 8.6 1.008

350.0 0.05549 35.8 0.0416 53. 7 7.47 1.049

360.0 0.06016 46.5 0.0546 47. 1 6.50 1.069

370.0 0.06544 57.1 0.0676 44. 4 5.69 1.059

380.0 0.0710 67.6 0.0801 44. 8 5.02 1.026

390.0 0.0767 77.6 0.0920 47. 1 4.49 0.983

400.0 0.0823 87.2 0. 1032 50. 6 4.06 0.940

420.0 0.0927 105.3 0. 1240 59. 5 3.43 0.870

440.0 0.1021 122.3 0. 1431 69. 1 2.98 0.824

460.0 0.1108 138.4 0. 1608 78. 8 2.66 0.795

480.0 0.1188 154.2 0. 1778 88. 2 2.41 0.777

500.0 0. 1263 169.6 0. 1940 97. 2 2.21 0.765

520.0 0.1334 184.8 0.2097 105. 9 2.05 0.759

540.0 0.1402 200.0 0.2251 114. 3 1.92 0.756

560.0 0. 1467 215.2 0.2400 122. 3 1.80 0.755

580.0 0.1529 230.3 0.2547 130. 1 1.70 0.756

600.0 0. 1590 245.5 0.2692 137. 7 1.61 0.758

-179-

APPENDIX C.

A LISTING OF THE FORTRAN ROUTINES IMPLEMENTING THE

FUNCTIONS DESCRIBED IN THIS PUBLICATION. A MAIN PROGRAM IS

INCLUDED FOR THE GENERATION OF THERMODYNAMIC PROPERTIES ALONG

AN ISOBAR, AND WHICH WILL ALSO SERVE AS AN EXAMPLE FOR THE

USE OF THE VARIOUS SUBROUTINES.
-180-

PROGRAM ISOBAR

C THIS IS A SAMPLE PROGRAM WHICH CAN BE USED TO CALCULATE ALL

C THERMODYNAMIC PROPERTIES FOR A RANGE OF TEMPERATURES AT A

C SPECIFIED PRESSURE AND COMPOSITION. THE ROUTINE 'SETUP' WILL

C INQUIRE OF THE USER THE CHOICE OF UNITS TO BE USED.

COMMON /'PROPS/ P,A,G,H,U,S,CV,CP,DPDD,DPDT,W

COMMON /CRITC / PC4 , PCS , DC4 ,DC5 , TC4 , TC5 , PI4 , PIS , DI4 ,DI5 , TI4, TI5

COMMON / MIXFAC / FX , HX , QX , TH , PH , FFT , FFV , V45 , T45 , VX , TX

COMMON / RCONST / TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX . DRK

CHARACTER* 8 ND,NH,NT,NP

COMMON .UNITS/ IT , ID, IP , IH. FT , FD, FP, FH, / UNITC/NT,ND,NP,NH , IFL

CHARACTERS IFL

CALL SETUP

C THE INPUT QUANTITIES ARE COMPOSITION, PRESSURE, INITIAL FINAL

C AND INCREMENTAL VALUES OF TEMPERATURE IN THE UNITS CHOSEN

1 READC* , * ,END=9) X , PIN , Tl , T2 , TI

TT=T1-TI

CALL FACTOR ( X , 1 . D0,1 . DO

)

FDD=FD

IF(ID.NE.3) FDD=FD/WMX

FHH-FH

IF(ID.NE.3) FHH=FH*WMX

PP = PIN*FP/PR/QX

DDD =3.

2 TT=TT+TI

IF(TT GT.T2) GO TO 1 T-TTTCTT)/FX

PSAT=PS(T)

IF(DDD.GT.l. .AND

CALL DFIND(D,PP,DDD,T,DQ)

DDD=D

CALL FACTOR(X,D,T)

T=TTT(TT)/FX

PP = PIN*FP/PR/QX

CALL DFIND(D,PP,DDD,T,DQ)

DDD=D

CALL FACTOR (X,D,T)

T=TTT(TT)'FX

PP = PIN*FP/PR/QX

CALL DFTND(D,PP,DDD,T,DQ)

DDD=D

CALL THERM(D,T,X)

PPP = P/FP *PR

DD = D*DR'FDD/HX

DPDT = DPDT*FT/FP *PR/TR

DPDD = DPDD*FDD/FP *PR/DR

CV = CV*FT/FHH *SR

CP = CP*FT/FHH *SR

S = S*FT/FHH SR

H = H/FHH *AR

U = U/FHH *AR

A=A/FHH *AR

G=G/FHH *AR

WRITE(*,3) IFL,X,DD,TT

3 F0RMAT(1X,A1,F5.3,F9.4

PP.LT.PSAT) DDD=PP/RSS/T

PPP , DPDT , DPDD , S , H , U , A ,

G

F8.3,F10.5,F10.5,3F10.5,4F12.5)
-181-

GO TO 2

9 STOP

END

C

BLOCK DATA

COMMON /RCONST/ TR, PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX , DRK

COMMON /NCONST/G( 25 ) , AA , MM( 25 ) , NN( 25 ) , NC

COMMON /BCONST/ B1(12),B2(12)

COMMON /CRITC / PC4 , PC5 , DC4 , DC5 , TC4 , TC5 , PI4 , PI5 , DI4 , DI5 , TI4 , TI5

COMMON /IDEAL5/ TBT(16) , A5BT( 16) , S5BT( 16) , CV5BT( 16) , TCT( 16

1 ,G5CT( 16) , S5CT( 16) , CP5CT( 16)

COMMON /IDEAL4/ C4C(11)

COMMON /CONVRT/ FFP(6) , FFD(6) , FFT(6) , FFH(6)

DATA PR , DRK , TR/ 3 . 629E6 , 225 . 5 , 407 . 84/

C THE CONVERSION FACTORS FOR DIFFERENT SYSTEMS OF UNITS ARE AS

C RECOMMENDED BY THE ASTM IN THEIR 'STANDARD FOR METRIC PRACTICE'

C (STANDARD E38G-79)

DATA FFP/1.E6,1.E5,1.01325E5, 6894. 757, 2*1.

DATA FFD/1. ,2*1000. , 16.01846,2*0.

DATA FFH/2*1.E3,4. 184E3 , 2 . 324444E3 , 2* 1 .

C THE ABOVE CONVERSION FACTORS FOR THE CAL AND BTU ARE THE

C ' THERMOCHEMICAL ' CAL AND BTU.

DATA TI4 , PI4 , DI4/407 . 84 , 3 . 629E6 , 225 . 5

DATA TI5 , PI5 , DI5/460 .51,3. 3707E6 , 234 . 3/

DATA C4C/ -5 . 0937093E-2 , 2 . 5252496 , 346 . 6523555 , 2 . 551551

1

, -53.012165,3.3434600,-. 11945060,-38. 124442

2,7.9688113,27.849029,58.1382356/

*, WM4,WM5,R/58.1242E-3,72. 1512E-3,8.31441/ , AA/ . 38796166

C THE VALUES USED FOR M4 , M5 AND R ARE THOSE RECOMMENDED BY COHEN AND

C TAYLOR IN 'THE 1973 LEAST-SQUARES ADJUSTMENT OF THE FUMDAMENTAL

C CONSTANTS', JPCRD VOL 2 P 663 (1973).

C THE FOLLOWING TABLE OF THE IDEAL GAS PROPERTIES FOR ISOPENTANE ARE FROM

C SCOTT, BUR OF MINES BULLETIN 666 (1974).

DATA TCT;/ . 01 , 2 . E2 , 273 . 15 , 3 . E2 , 4 . E2 , 5 . E2 , 6 . E2 , 7 . E2 , 8 . E2 , 9 . E2

1, l.E3,l. 1E3,1.2E3,1.3E3, 1.4E3,1.5E3/

DATA G5CT/0 .

, -58 . 16 , -62 . 98 , -64 . 59 , -70 . 20 , -75 . 38 , -80 .

1,-85.0,-89.5,-93.9,-98. 1,-102.2,-106. 1,-109.9,-113.6, -117. 1/

DATA S5CT/0 . , 72 . 50 , 79 . 72 , 82 . 30 , 91 . 63 , 100 . 57 , 109 .

1 . 117 3,125.0,132.4,139.4,146.1,152.4,158.5

2,164.3, 169.8/ ,CP5CT/0. ,20.30,26.38,28.56,36.54

3.43.80,50.2,55.7,60.5,64.7,68.4,71.6.74.4,77. .79. ,81.

C

DATA G' -9.6153074. 27.935713, -125.69635, 544.06550

-479.48565, 141.34133, -12.372626, -34.731447

.57569010E3, .53210066E3, .41502454E3, -.42359614E3

.58118955E2, - . 50009149E2 , .23153999E3, - . 38080769E3

.26120687E3, - . 22934154E2 . - . 14503027E2 , -.10167777E2

.30142576E2, - . 33549797E2 , .25502886E2, -.53441617

. 037213690/, NC/25/

DATA MM/ 1,2, 4, 5, 6, 8. 1,3, 5, 6, 7, 8, 1,2, 4, 6, 8, 1.6, 1,2, 5, 8, 2, 8/

DATA NN' 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4. 5, 5. 6. 6, 6. 6. 7, 7/

DATA Bl/ . 15388314,- .03916987,3*0. . -2 . 5198404E-4 , 3*0

* ,9.8801205E-7,2*0. / , B2/ 3 . 0020353 , . ,-6. 1529971.0.

* ,-1.4570002,0. , . 13342155,4*0. , -9 . 004371E-5/

END
-182-

SUBROUTINE SETUP

C THIS ROUTINE ESTABLISHES THE SYSTEM OF UNITS DESIRED AND PUTS

C IN PLACE THE NECESSARY VALUES FOR THE REDUCTION PARAMETERS.

COMMON /UNITS/ IT , ID, IP , IH , FT , FD , FP, FH . /UNITC/NT , ND, NP , NH

COMMON /CRITC ' PC4 , PCS , DC4 , DCS , TC4 , TC5 , PI4 , PIS ,DI4 , DI5 , TI4 , TI5

COMMON RCONST/ TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX,DRK

COMMON /CONVRT/ FFP(6) , FFD(6) , FFT(6) , FFH(6)

CHARACTER'S NNTC4) , NNP(4) , NND(4) ,NT,ND,NP,NH

DATA NNT/ 'K','C','R','F'/

DATA NND/ 'KG/M3 ','G/CM3 ','MOL/L ','LB/FT3'/

DATA NNP/ ' MPA '

,

' BAR '

,

' ATM '

,

' PSI '

/

WRITEC* , 12)

READ * , IT

IF(IT-3) 102, IDS, IDS

102 PRINT 13

READ * , ID

PRINT 14

READ *,IP

PRINT 15

READ * , IH

GO TO 109

105 ID=4

IP-4

IH-4

109 NP=NNP(IP)

FP-FFP(IP)

NT-NNT(IT)

ND-NND(ID)

FD-FFD(ID)

FH=FFH(IH)

110 DR - DRK/WM4

AR = PR/DR

SR = AR/TR

WR UOOO. *AR)**( .5)

RSS - R/SR

CALL FZ5GEN

PC4 - PI4/PR

DC4 = DI4/WM4 /DR

TC4 = TI4/TR

PCS = PI5'PR

DCS = DC4 * TI4/TIS PIS/PI4

TCS - TI5/TR

RETURN

11 FORMAT

(

12 FOR MAT

(

13 FORMAT

(

14 FORMAT

15 FORMAT

END

ENTER UNITS CHOSEN FOR ',2A6)

CHOOSE FROM 1=DEG K, 2=DEG C, 3=DEG R, 4=DEG F')

CHOOSE FROM 1=KG/M3, 2=G/CM3, 3=M0L/L, 4=LB/FT3')

CHOOSE FROM 1=MPA, 2=BAR, 3=ATM, 4=PSIA')

CHOOSE FROM 1=KJ/KG, 2=J/G, 3=CAL/G, 4=BTU/LB')

CC

FUNCTION TTT(T)

COMMON /RCONST/ TR , PR , DR , AR , SR , WR , R, RSS . WM4 , WMS

,

WMX

CHARACTER* 8 NT,ND,NP,NH

COMMON /UNITS/ IT , ID, IP . IH, FT . FD, FP, FH, /UNITC/NT, ND, NP.NH

GO TO (1,2,3,4) , IT

TTT=T/TR
cc

-183-

FT-1.

RETURN

2 TTT=(T+273. 15)/TR

FT=L . RETURN

3 TTT=T. 1 8, TR

FT=5. '9.

4 TTT=(Tf459.67)/1.8/TR

FT = 5. '9.

RETURN

END

FUNCTION TTI(T)

COMMON /RCONST/ TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX

COMMON /UNITS/ IT , ID, IP , IH , FT , FD . FP , FH

GO TO (5, 6, 7, 8), IT

5 TTI = T*TR

RETURN

6 TTI = T*TR-273. 15

RETURN

7 TTI = T*TR*1.8

RETURN

8 TTI = T*TR*1.8 - 459.67

RETURN

END

SUBROUTINE FZ4(TT , AZ , SZ , CVZ)

THE IDEAL GAS FUNCTIONS FOR ISOBUTANE

COMMON /RCONST/ TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX, DRK

COMMON /IDEAL4/ 0(11)

U-C(9)/TT

Y-EXP(U)

SZ=C(8)*(U*Y/(Y-1. )-ALOG(Y-l. ) )-C( 10) /TT-C( 11 ) * (ALOG(TT)+ 1 .

AZ=C(8)*TT*AL0G(Y-1. )+(C( 10)+C( 11 ) *TT) *ALOG(TT)

CVZ CC10)/TT-C(11)+C(8)*U*U*Y/(Y-1. )**2

DO 8 1=1,7

CVZ=CVZ-CCl)*(I-3)*(I-4)*TT**(I-4)

AZ=AZ4CCl)*TT**(I-3)

7 SZ-SZ-C(I)*TT**(I-4)*(I-3)

8 CONTINUE

RETURN

END

SUBROUTINE FZ5(TT , AZ , SZ , CVZ

THE IDEAL GAS FUNCTIONS FOR ISOPENTANE

COMMON IDEAL5/ TBT( 16) , A5BT( 16) , S5BT( 16 ) , CV5BT( 16) , CALTAB(64)

TK=TT

1B=1

DO 2 1=3, 14

IFCTT.LT.TBTd)) GO TO 3

2 IB-IB+1

3 CALL INTRPL(TBTCIB) ,A5BT(IB) ,4,TK,AI)

CALL INTRPL(TBT(IB) ,S5BT(IB) ,4,TK,SI)

CALL INTRPL(TBT(IB) , CV5BT( IB) , 4 , TK , CVI)

AZ = AI - 35.1874288 + TK* 145 . 188298

SZ = SI - 145. 188298

CVZ = CVI
-184-

RETURN

END

SUBROUTINE FZ5GEN

COMMON /RCONST/ TR, PR , DR , AR , SR, WR .R , RSS , WM4 , WM5 , WMX

C0MM0N/IDEAL5/TB(16),AB(16),SB(16),CVB(16),T(16),G(16),S(16),C(16

Q = 4. 184

RC - R/Q

DO 8 1=1, 16

AB(I) = (G(I)-RC*(1.-AL0G(T(I))))*T(I)*Q/AR

SBCI) = (S(I) RC*ALOG(T(I)))*Q/SR

CVB(I) = (C(I)*Q-R)/SR

8 TB(I) = T(I)/TR

RETURN

END

C

SUBROUTINE IDEALF(TT,X)

C THIS ROUTINE GENERATES THE IDEAL GAS FUNCTIONS FOR THE MIXTURE

C FROM THE FUNCTIONS FOR THE PURE SUBSTANCES.

COMMON /IDEAL/ AZ , SZ , CVZ

COMMON /RCONST/ TR , PR , DR , AR , SR , WR,R ,RSS , WM4 , WM5 , WMX

COMMON /MIXFAC/ FX, HX, QX, TH , PH, FFT , FFV , V45 , T45 , VCX, TCX

T = TT*FX

CALL FZ4(T,AZ4,SZ4,CVZ4)

CALL FZ5CT,AZ5.SZ5,CVZ5)

TERM - IFCX.GT.G. .AND. X . LT . 1.) TERM = X*ALOG(X) + ( 1

. -X) *ALOG( 1

. -X)

AZ (X*AZ5 + (l.-X)*AZ4) + RSS*T*TERM

SZ =- (X*SZ5 + (l.-X)*SZ4) - RSS*TERM

CVZ = (X*CVZ5 + (l.-X)*CVZ4)

RETURN

END

C

SUBROUTINE INTRPL(X , Y , K , XO , YO)

DIMENSION X(IOO) ,Y(100) ,XLAG(30)

YO-0

DO 1220 1=1,

K

XLAGCI)=1.0

DO 1215 J=1,K

IFCJ-I) 1210,1215,1210

12 IC XLAG(I)=XLAG(I)*(XO-X(J))/(XCl)-X(J))

1215 CONTINUE

1220 YO-YO+(XLAG(I)*Y(I))

RETURN

END

C

SUBROUTINE CONFML(D,T)

C THIS ROUTINE GENERATES THE CONFORMAL PART OF THE MIXTURE THERMOC DYNAMIC FUNCTIONS.

COMMON /RCONST/ TR , PR , DR , AR, SR , WR , R , RSS , WM4 , WM5 , WMX

COMMON /MIXFAC/ FX , HX, QX , TH , PH, FFT , FFV , V45 , T45 , VCX, TCX

COMMON , BCONST/ PB( 12) , QB( 12) , NVIR , NVOL

COMMON /NCONST^ A( 25 ), AA , 11(25 ), JJ(25) ,N

COMMON /CONF/ PCF , ZCF , ACF , SCF , CVCF , DPDD , DPDT

DIMENSION V(12)

HL = -ALOG(HX)
-185-

V(l)=l.

1 DO 2 1=2,12

2 V(I)=V(I-1)/T

B1=PB(1)-PB(2)*AL0G(V(2))

B2=QB(1)

B1T=PB(2)

B2T=0.

BITT- -PB(2)

B2TT=0.

DO 4 1=3, 12

B1=B1+PB(I)*V(I-1)

B2=B2+QB(I)*V(I-1)

B1T=B1T-(I-2)*PB(I)*V(I-1)

B2T=B2T-(I-2)*QB(I)*V(I-1)

B1TT=B1TT+PB(I)*(I-2)*(I-1)*V(I-1)

4 B2TT=B2TT+QB(I)*(I-2)*(I-1)*V(I-1)

Y=B1*D

X=l.-Y

DPDDB = RSS*T*(9. *Y*Y/X**4 + Y/X/X - l./X)

QAB = D*T*B2 + RSS*T* (AL0G(D/X)+1 . 5/X/X-4 . *D*B1)

PBASE = T*B2 + RSS*T/D*(1. /X+3. *Y/X**3-4. *Y)

PBASE = PBASE*D*D

QSB =-QAB/T - D*B2T - RSS*D*B1T* ( 1 • /X+3 . /X* *3-4 .

CVB = -2.*D*B2T -D*B2TT -RSS*D* ( ( 1 • /X+3 . /X* *3-4 . )

* (2 . *B1T+B1TT)

1 +D*(1. /X''X+9. /X**4)*B1T*B1T)

DPDTB = PBASE/T + D*D* (B2T+RSS* ( 1 . /X/X+3 . /X* *3+9 . *Y/X* *4-4 . ) *B1T)

QSR=0.

D2P=0.

CVR=0.

DPDTR=0.

Q=0.

ARES=0.

Q11=0.

E=EXP(-AA*D)

Q10-D*D*E

Q20=l . -E

XX=ABS(AA*D)

IFCXX.LT. 1 .E-5) Q20=AA*D

DO 10 1=1,

K=II(I)

L-JJ(I)

ZZ=K4

FCT=AA*ZZ*Q10*Q20**K*T**(1-L)

DFCT=AA*AA*Q10*T**(1-L)*ZZ*Q20**(K-1)*(K-ZZ*Q20)

DFDT=Q20* *(K+1)*(1-L)*T**(-L)

D2F-L*DFDT

DPT=DFDT*Q10*AA*ZZ/Q20

D2PA=L*DPT

QSR=QSR4A(I)*DFDT

DPDTR=DPDTR+A( I

) *DPT

CVR=CVR+A(I)*D2F

D2P=D2P+A(I)*D2PA

Qll = Qll + A(I)*DFCT

^ = Q ^ A(I)*FCT

ARES = ARES + A( I) *FCT*Q20/AA/Q10/ZZ

10 CONTINUE
-186-

PCF - PBASE^Q

ZCF = PCF/D/T/RSS

ACF = (QAB4ARES)/T/RSS + HL

SCF = (9SB-QSR)/RSS - HL

CVCF = (CVB+CVR)/RSS

DPDD = (DPDDB+Q11)/T/RSS + ZCF

DPDT = (DPDTB+DPDTR)/D/RSS - ZCF

RETURN

END

SUBROUTINE FACTOR(X , D, T)

CALL MIXRUL(X)

CALL SHAPE(X,D,T)

RETURN

END

SUBROUTINE SHAPE(X,D,T)

COMMON MIXFAC/ FX, HX,QX , TH, PH, FFT , FFV, V45 , T45 , VCX, TCX

COMMON 'CRITC / PC4 , PCS , DC4 ,DC5 , TC4 , TC5 , PI4 , PIS ,DI4 ,DI5 , TI4 . TI5

COMMON / RCONST / TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX

WMX - (l.-X)*WM4 + X*WM5

CALL THPH(D,T)

FX = TCX/TC4 *((1. -X)+X*TH)

HX - VCX*DC4 *((1.-X)+X*PH+6.E4*CX*X*(1.-X)*(PH-1. )**3))

QX = FX'HX

RETURN

END

SUBROUTINE MIXRUL(X)

COMMON /MIXFAC/ FX, HX , QX , TH, PH, FFT , FFV, V45 , T45 , VCX, TCX

COMMON /CRITC / PC4 , PCS , DC4 , DCS , TC4 , TC5 , PI4 , PIS ,DI4 , DI5 , TI4 , TI5

CALL COMRUL

VCX - (l.-X)**2/DC4 + 2. *X*Cl.-X)*V4S + X*X/DCS

TCX = (1. X)**2*TC4 + 2. *X*(I. -X)*T4S + X*X*TCS

RETURN

END

SUBROUTINE COMRUL

COMMON MIXFAC/ FX , HX,QX , TH, PH, FFT , FFV, V4S , T4S , VCX, TCX

COMMON /CRITC / PC4 , PCS ,DC4 ,DCS , TC4 , TCS , PI4 , PIS , DI4 ,DIS , TI4 , TIS

FFT = 1.003

FFV = l.OOS

T4S = FFT*(TC4*TCS)**( .S)

V4S --= FFV*( .S*DC4**(-.3333) + . S*DC5* * ( - • 3333) )

* *3

RETURN

END

SUBROUTINE THPH(D,T)

COMMON /MIXFAC/ FX , HX,QX, TH , PH, FFT, FFV, V4S , T4S , VCX, TCX

DATA PHT,PHD,PHC/-.067.-.02, -.03S/

DATA THT,THD,THC/-.01, .00S8, .OlS/

TT=T-1.

DD=D-1.

TH = 1. + THD*DD + THT*TT + THC*TT*TT

PH = 1 . 4 PHT*TT + PHC*TT*TT + PHD*DD

RETURN
-187-

END

C

SUBROUTINE THERM (D,T,X)

C THIS ROUTINE GENERATES THE TOTAL THERMODYNAMIC FUNCTIONS FROM

C THE IDEAL AND CONFORMAL PARTS.

COMMON /MIXFAC/ FX,HX,QX , TH , PH , FFT , FFV , V45 , T45 , VCX, TCX

COMMON /UNITS/ IT , ID , IP , IH, FT , FD, FP , FH , /UNITC/NT , ND, NP , NH , IFL

COMMON /IDEAL / AZ , SZ , CVZ

COMMON /CONF / PCF , ZCF , ACF , SCF , CVCF , DPDDCF , DPDTCF

COMMON /RCONST/ TR , PR, DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX

COMMON /PROPS / P,A,G,H,U,S,CV,CP,DPDD,DPDT,W

CHARACTER* 8 NT,ND,NP,NH

CHARACTER*! IFL,IFB,IFA

DATA IFB,IFA/ ' ','*'/

IFL=IFB

IF(D.GT..7 .AND. D.LT.1.3 .AND. T.GT..99 .AND. T.LT.1.02)

1 1FL=IFA

CALL IDEALF(T,X)

CALL CONFML(D,T)

P = PCF * QX

A = AZ + RSS*T*FX*ACF

G = A + P/D *HX

S = SZ + RSS*SCF

U = A ^ T*S*FX

H = G f T*S*FX

CV - CVZ f RSS* CVCF

DPDT = (DPDTCF+ZCF)*D*RSS/HX

DPDD - (DPDDCF+ZCF)*T*RSS*FX

CP = CV ^ FX*HX*HX*T*DPDT**2/DPDD/D/D

RETURN

END

C

SUBROUTINE MU(XMU1 ,XMU2 , D2ADX2 , D, T , X)

C THIS ROUTINE CALCULATES THE CHEMICAL POTENTIALS (AND ALSO RETURNS

C THE SECOND DERIVATIVE (D2A/DX2) AS A BYPRODUCT) THROUGH

C NUMERICAL DIFFERENTIATION.

COMMON /MIXFAC/ FX , HX, QX , TH , PH , FFT , FFV , V45 , T45 , VCX , TCX

COMMON /UNITS/ IT , ID , IP , IH , FT , FD, FP , FH, /UNITC/NT , ND , NP , NH

COMMON IDEAL / AZ , SZ , CVZ

COMMON /CONF / PCF , ZCF , ACF , SCF , CVCF , DPDDCF , DPDTCF

COMMON /RCONST/ TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX

COMMON /PROPS / P,A,G,H,U,S,CV,CP,DPDD,DPDT,W

COMMON 'INX/ DELX

CALL FACTOR(X,D,T)

HXO -^ HX

FXO-FX

QXO=QX

CALL THERM(D,T,X)

AO=A

GO=G

PO = P

DELX=5.E-4

IF(X.GT. .9995) DELX=1.-X

IF(X.LT.5.E-4) DELX=X

X1=X+DELX

IF(X.EQ.O. ) Xl=l .E-6
-188-

CALL FACTOR I. Xl.D.T)

D1-D*HX,HXC

T1-T*FX0''FX

CALL THERM(D1,T1,X1)

P1--P

Al - A

X2=X DELX

IF(X.EQ.l.) X2=. 999999

CALL FACT0R(X2,D,T)

D2=D*HX/HX0

T2=T*FX0/FX

CALL THERM (D2,T2,X2)

P2-P

A2 - A

IF(DELX.EQ.O. ) DELX=5.E-7

DADX = (A1-A2)/(X1-X2)

D2ADX2 = ((A1-A0)/(X1-X) - (A0-A2) / CX-X2) ) *2 . / (X1-X2) . XMUl = GO - X*DADX

XMU2 = GO + (l.-X)*DADX

RETURN

END

CC

SUBROUTINE DFIND(DOUT, P, D, T, DPD)

C UTILITY ROUTINE FOR ITERATING TO FIND DENSITY AS A FUNCTION OF

C PRESSURE AND TEMPERATURE. AN INITIAL GUESS FOR THE DENSITY

C IS REQUIRED AS PART OF THE INPUT.

COMMON MIXFAC. FX , HX , QX , TH, PH , FFT , FFV , V45 , T45 , VX, TX

COMMON .'RCONST/ TR , PR , DR , AR , SR , WR , R , RSS , WM4 , WM5 , WMX, DRK

COMMON CONF^ PCF , ZCF , ACF , SCF , CVCF , DPDDCF ,DPDT

T0L=1 .0E-07

DD = D

L-0

9 L=Ltl

IF(DD.LE.O. ) DD=l.E-6

IF(DD GT.3.6) DD=3 .

6

CALL CONFML(DD,T)

PP=PCF

DPD = (DPDDCF+ZCF)*T*RSS*FX

DPDX=DPD

10 X1=D

XX=DD

IF(DPDX.GT. 10. ) TOL=1.0E-6

IFCDPDX.GT. 100. ) TOL=1.0E-5

IFCDPDX.GT. 1000. ) TOL=1.0E-4

IFCABSd . PP/P) .LT.TOL) GO TO 20

X2-(P-PP)/DPDX

X=X2

15 DD=DD+X

IFCDD.LE.O. ) DD=l.E-8

IFCL.LE.40) GO TO 9

DD=DD-X

X2-X2/DD

WRITE ( * , 1000)P,PP,X1,XX,T,X2,DPD

20 CONTINUE

DOUT=DD

1000 FORMATC ' 40 ITERATIONS IN DFIND PIN PCALC DIN DCALC T FRAC
-189-

IDPD ,4G'3.6 3G13.6)

RETURN

END

C

FUNCTION PS(T)

C UTILITY ROUTINE TO FURNISH AN APPROXIMATE VALUE IN REDUCED UNITS

C FOR THE VAPOR PRESSURE OF ISOBUTANE (USEFUL FOR GENERATING

C INITIAL GUESSES FOR THE PRESSURE WHEN DETERMINING DEW- AND

C BUBBLE- CURVES.

PS-0.

IFCT.GE. 1. ) RETURN

100 Y=l . -T

Al=-6. 83796

A2=l .25220

A5- 2.3406

XN2 1 .

X=(A1*Y+A2*Y**XN2+A5*Y**3)/T

PS=EXPCX)

END
NBS-n4A (REV. 2-ec) U.S. DEPT. OF COMM. BIBLIOGRAPHIC DATA

SHEET (See instructions)

. PUBLICATION OR

REPORT NO,

NBS/TN-1234

2. Performing Organ. Report No 3. Publication Date

June 1987

4. TITLE AND SUBTITLE

Thenrradynamic Properties of a Geothermal Working Fluid; 90% Isobutane—10% Isopentane

5. AUTHOR(S)

J.S. Gallagher, D. Linsky, G. Morrison, and J.M.H. Levelt Sengers

6. PERFORMING ORGANIZATION (If joint or other thon N 6S, see instructions)

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

GAITHERSBURG, MD 20899

7. Contract/Grant No,

8. Type of Report & Period Covered

Final

9. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS (Street. City, State. ZIP)

Same as Item 6

10. SUPPLEMENTARY NOTES

QJ Document describes a computer program; SF-185, FIPS Software Summary, is attached.

11. ABSTRACT (A 200-word or less factual sumnnary of most significant information. If document includes a significant

bibliography or literature survey, mention it here)

Vfe present tables of thermodynamic properties, and dew and bubble properties, of a mixture of 90 mol % isobutane and 10 mol % isopentane, a working fluid in a binary geothermal power cycle. The tables are generated by a formulation of the Helmholtz free

energy, in v^ich the mixture properties are mapped onto the known properties of pure

isobutane by means of the principle of generalized corresponding states. The data base

for the Helntioltz free energy formulation is new. Vfe report data obtained in three

different apparatus: critical-line and isopentane vapor pressure data obtained in a visual cell; vapor-liquid equilibria data obtained in a mercury-operated variable-volume

cell; and pressure-volume-temperature data for the 90 mol %—10 mol % mixture obtained

in a semi-automated Burnett-isochoric apparatus. The principles of the methods, and

estimates of the reliability, are discussed and all experimental data are ccmpared with

the surface. The results are tables of specific volume, enthalpy, entropy, specific

heat and density and temperature derivatives of the pressure at 10 K temperature

increments from 240 to 600 K along isobars from 0.01 to 20 MPa. Separate tables are prepared fron the dew and bubble properties of the 90-10 mixture.

Estimates of the effects of isomeric impurity of isobutane are given in graphical form.

12. KEY WORDS (Six to twelve entries; alphabetical order; capitalize only proper names; and separate key words by semicolons)

critical line; generalized corresponding states; isobutane; isopentane;

mixtures; phase boundary; P-H chart; thermodynamic tables; VLE data

13. AVAILABILITY

[X] Unlimited

[^ For Official Distribution. Do Not Release to NTIS

[X] Order From Superintendent of Documents. U.S. Government Printing Office, Washington, D.C. 20402.

\2Z\ Order From National Technical Information Service (NTIS), Springfield, VA. 22161

14. NO. OF

PRINTED PAGES

191

15, Price

USCOMM-DC 6043-P80

U.S. Government Printing Offfioe: 1987 0- 181-076 (6010S)
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