CFC-152a(R152a)359

2.39 CFC-152a(R152a)
All equations for CFC-152a(R152a) are based on the Table from Thermodynamic properties of refrigerants of
ASHRAE[1],[2].

2.39.1 Temperature Scale
International practical temperature scale 1968 (IPTS-1968)

2.39.2 The Names of Substance, Library File and Single Shot Program
Name of Substance:
Library File for UNIX:
Library File for DOS,Windows95/NT:
Single Shot Program for UNIX:
Single Shot Program for DOS,Windows95/NT:

CFC-152a, R152a, Refrigerant 152a,
Diﬂuoroethane
libjr152a.a
JR152A.LIB
r152a-ss
R152A–SS.EXE

2.39.3 Important Constants and Others
Molecular Formula:
Relative Molecular Mass:
Gas Constant:
Critical Constants:
Critical Pressure:
Critical Temperature:
Critical Speciﬁc Volume:C2 H4 F2
66.050125.882 J/(kg·K)

4.495×10 6Pa (44.95 bar)386.65 K (113.50 ◦ C)
2.7397×10 −3m3 /kg

Reference State:
At 0◦ C, 1.0000 kJ/(kg·K) and 200.00 kJ/kg are assigned to the speciﬁc entropy and the speciﬁc enthalpy ofsaturated liquid, respectively.

2.39.4 Formula
Equation of State:
The Martin-Hou equation in reference [1] is used.
Vapor Pressure:
Equation (2.2.2) in reference [1].
Properties at Vapor-Liquid Equilibrium:
The saturated liquid density equation is obtained from Equation (2.2.4.d) in reference [1]. The saturated vapor
density is obtained by the compatibility of the equation of state and vapor pressure equation. Isobaric speciﬁcheat cp is obtained from individual in reference [2].
Transport Properties:
Thermal conductivity and viscosity from reference [2].
The Other Properties:
Surface tension from reference [5].

References[1] Thermodynamic Properties of Refrigerants (1986), 33, ASHRAE[2] Thermophysical Properties of Refrigerants (Inch-Pound Edition), (1993), 113, ASHRAE

360

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.39–1

No.
1
94
8A
8B
82
8C
8D
2

Name of
Function
AIPPT(P,T)
AJTPT(P,T)
AKPD(P)AKPDD(P)AKPT(P,T)
AKTD(T)
AKTDD(T)
ALAPP(P)3

ALAPT(T)4

ALHP(P)

5

ALHT(T)

6

ALMPD(P)78

ALMPDD(P)
ALMPT(P,T)

9

ALMTD(T)10
11

ALMTDD(T)
AMUPD(P)12

AMUPDD(P)13

AMUPT(P,T)

14

AMUTD(T)15

AMUTDD(T)

92
90
91
93
16

BPPT(P,T)
BSPT(P,T)
BTPT(P,T)
BVPT(P,T)
CPPD(P)

17

CPPDD(P)18

CPPT(P,T)

R152a Function

Function and Argument(s)Range of Argument(s)ALAPP: Laplace Coeﬃcient [m]P∗: Pressure [Pa], [bar]
ALAPT: Laplace Coeﬃcient [m]T∗: Temperature [K], [◦C]
ALHP: Latent Heat of Vaporization [J/kg]
P∗: Pressure [Pa], [bar]ALHT: Latent Heat of Vaporization [J/kg]
T∗: Temperature [K], [◦C]
ALMPD: Thermal Conductivity of Saturated
Liquid [W/(m·K)]
P∗: Pressure [Pa], [bar]1.033×103 ≤P≤0.22189×106 [Pa]0.01033≤P≤2.2189 [bar]173.15≤T≤268 [K]−100≤T≤−5.15 [◦C]
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]173.15≤T≤371.15 [K]−100≤T≤98 [◦C]
9.71×103 ≤P≤1.899×106 [Pa]0.0971≤P≤18.99 [bar]

ALMPT: Thermal Conductivity at Ordinary
Pressure [W/(m·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]
ALMTD: Thermal Conductivity of Saturated
Liquid [W/(m·K)]
T∗: Temperature [K], [◦C]

P=Dummy273≤T≤473 [K]−0.15≤T≤199.85 [◦C]

AMUPD: Coeﬃcient of Viscosity of Saturated
Liquid [Pa·s]
P∗: Pressure [Pa], [bar]
AMUPDD: Coeﬃcient of Viscosity of Saturated
Vapor [Pa·s]
P∗: Pressure [Pa], [bar]
AMUPT: Coeﬃcient of Viscosity at Ordinary
Pressure [Pa·s]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]
AMUTD: Coeﬃcient of Viscosity of Saturated
Liquid [Pa·s]
T∗: Temperature [K], [◦C]
AMUTDD: Coeﬃcient of Viscosity of Saturated
Vapor [Pa·s]
T∗: Temperature [K], [◦C]

9.62×103 ≤P≤0.6885×106 [Pa]0.0962≤P≤6.885 [bar]CPPD: Isobaric Speciﬁc Heat of Saturated
Liquid [J/(kg·K)]
P∗: Pressure [Pa], [bar]
CPPDD: Isobaric Speciﬁc Heat of Saturated
Vapor [J/(kg·K)]
P∗: Pressure [Pa], [bar]CPPT: Isobaric Speciﬁc Heat at Ordinary
Pressure [J/(kg·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

9.71×103 ≤P≤1.899×106 [Pa]0.0971≤P≤18.99 [bar]203.15≤T≤343.15 [K]−70≤T≤70 [◦C]

0.12486×103 ≤P≤1.509×106 [Pa]1.2486≤P≤15.09 [bar]P=Dummy248≤T≤423 [K]−25.15≤T≤149.85 [◦ C]
203≤T≤303 [K]−70.15≤T≤29.85 [◦C]
253.15≤T≤333.15 [K]−20≤T≤60 [◦C]

17.81×103 ≤P≤0.912×106 [Pa]0.1781≤P≤9.12 [bar]P=Dummy248.15≤T≤473.15 [K]−25≤T≤200 [◦C]CFC-152a(R152a)

361
Table II–2.39–1

No.
19

Name of
Function
CPTD(T)

20

CPTDD(T)21

CRP(‘A’)

7A
76
77
7B
78
2A
2B
22
2C
2D
89

CVPD(P)
CVPDD(P)
CVPT(P,T)
CVTD(T)
CVTDD(T)EPSPD(P)EPSPDD(P)EPSPT(P,T)
EPSTD(T)EPSTDD(T)FC(‘A’)

9A
96
95
9B
97
23

GAMPD(P)GAMPDD(P)GAMPT(P,T)
GAMTD(T)GAMTDD(T)HPD(P)

24

HPDD(P)71

HPS(P,S)

25

HPT(P,T)

26

HPX(P,X)

27

HTD(T)28

HTDD(T)

29

HTX(T,X)

R152a Function (cont’d)

Function and Argument(s)Range of Argument(s)CPTD: Isobaric Speciﬁc Heat of Saturated
Liquid [J/(kg·K)]
T∗: Temperature [K], [◦ C]
CPTDD: Isobaric Speciﬁc Heat of Saturated
Vapor [J/(kg·K)]
T∗: Temperature [K], [◦ C]
CRP: Critical Constants
H: ‘A’=‘H’: 0.4679×106 [J/kg] Speciﬁc EnthalpyP∗: ‘A’=‘P’: 4.495×106 [Pa], 44.95 [bar] Pressure
S: ‘A’=‘S’: 1.7970×103 [J/(kg·K)] Speciﬁc EntropyT∗: ‘A’=‘T’: 386.65 [K], 113.50 [◦ C] Temperature
V: ‘A’=‘V’: 2.7397×10−3 [m3 /kg] Speciﬁc Volume203.15≤T≤343.15 [K]−70≤T≤70 [◦ C]

FC: Fundamental Constants
M: ‘A’=‘M’: 66.050 Relative Molecular Mass
R: ‘A’=‘R’: 125.882 [J/(kg·K)] Gas Constant

one of ‘M’ and ‘R’

HPD: Speciﬁc Enthalpy of Saturated Liquid [J/kg]
P∗: Pressure [Pa], [bar]HPDD: Speciﬁc Enthalpy of Saturated Vapor [J/kg]
P∗: Pressure [Pa], [bar]HPS: Speciﬁc Enthalpy [J/kg]
P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy [J/(kg·K)]

1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]10×103 ≤P≤3.0×106 [Pa]SPDD(P)≤S≤
SPT(P,453.15K) [J/(kg·K)]

HPT: Speciﬁc Enthalpy [J/kg]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

HPX: Speciﬁc Enthalpy of Mixture [J/kg]
P∗: Pressure [Pa], [bar]
X: Dryness Fraction [–]HTD: Speciﬁc Enthalpy of Saturated Liquid [J/kg]
T∗: Temperature [K], [◦ C]
HTDD: Speciﬁc Enthalpy of Saturated Vapor [J/kg]
T∗: Temperature [K], [◦ C]
HTX: Speciﬁc Enthalpy of Mixture [J/kg]
T∗: Temperature [K], [◦ C]
X: Dryness Fraction [–]213.15≤T≤313.15 [K]−60≤T≤40 [◦ C]
one of ‘H’, ‘P’, ‘S’, ‘T’ and ‘V’

0.1≤P≤30 [bar]SPDD(P)≤S≤
SPT(P,180◦ C) [J/(kg·K)]
see Fig.II-2.39-3 for S
10×103 ≤P≤3.0×106 [Pa]TSP(P)≤T≤453.15 [K]
0.1≤P≤30 [bar]TSP(P)≤T≤180 [◦C]
see Fig.II-2.39-1
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]0≤X≤1.0 [–]173.15≤T≤371.15 [K]−100≤T≤98 [◦C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦C]
0≤X≤1.0 [–]362

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.39–1

No.
84

Name of
Function
IDENTF(‘A’)

66
68
85

PLDT(T)
PMLT(T)
PRPD(P)

86
81

PRPDD(P)
PRPT(P,T)

87

PRTD(T)

88
99
30

PRTDD(T)PSBT(T)
PST(T)72
73
31

PSTD(T)
PSTDD(T)SIGP(P)

32

SIGT(T)

33

SPD(P)34

SPDD(P)35

SPT(P,T)36

SPX(P,X)

37

STD(T)38

STDD(T)

39

STX(T,X)

67
69

TLDP(P)
TMLP(P)

R152a Function (cont’d)

Function and Argument(s)Range of Argument(s)IDENTF: CHARACTER TYPE FUNCTION
for Package Identiﬁcation (Length 20)
C: ‘A’=‘C’: ‘C2H4F2’ Molecular Formula
S: ‘A’=‘S’: ‘R152A’ Name of Substance
V: ‘A’=‘V’: ‘10.1’ Version Number

one of ‘C’, ‘S’ and ‘V’

PRPD: Prandtl Number of Saturated Liquid [–]P∗: Pressure [Pa], [bar]9.71≤P≤0.6885 [Pa]0.0971≤P≤6.885 [bar]

PRPT: Prandtl Number at Ordinary Pressure [–]P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]
PRTD: Prandtl Number of Saturated Liquid [–]T∗: Temperature [K], [◦C]

P=Dummy273≤T≤423 [K]−0.15≤T≤149.85 [◦ C]
203.15≤T≤303 [K]−70≤T≤29.85 [◦C]

PST∗: Saturation Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]

SIGP: Surface Tension [N/m]P∗: Pressure [Pa], [bar]
SIGT: Surface Tension [N/m]T∗: Temperature [K], [◦C]
SPD: Speciﬁc Entropy of Saturated Liquid[J/(kg·K)]
P∗: Pressure [Pa], [bar]SPDD: Speciﬁc Entropy of Saturated Vapor[J/(kg·K)]
P∗: Pressure [Pa], [bar]SPT: Speciﬁc Entropy [J/(kg·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

1.033×103 ≤P≤0.22189×106 [Pa]0.01033≤P≤2.2189 [bar]173.15≤T≤268 [K]−1000≤T≤−5.15 [◦ C]
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]SPX: Speciﬁc Entropy of Mixture [J/(kg·K)]
P∗: Pressure [Pa], [bar]
X: Dryness Fraction [–]STD: Speciﬁc Entropy of Saturated Liquid[J/(kg·K)]
T∗: Temperature [K], [◦C]
STDD: Speciﬁc Entropy of Saturated Vapor[J/(kg·K)]
T∗: Temperature [K], [◦C]
STX: Speciﬁc Entropy of Mixture [J/(kg·K)]
T∗: Temperature [K], [◦C]
X: Dryness Fraction [–]1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]10×103 ≤P≤3.0×106 [Pa]TSP(P)≤T≤453.15 [K]
0.1≤P≤30 [bar]TSP(P)≤T≤180 [◦ C]
see Fig.II-2.39-1
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]0≤X≤1.0 [–]173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
0≤X≤1.0 [–]CFC-152a(R152a)

363
Table II–2.39–1

No.
64

Name of
Function
TPH(P,H)

R152a Function (cont’d)

Function and Argument(s)TPH∗: Temperature [K], [◦ C]
P∗: Pressure [Pa], [bar]H: Speciﬁc Enthalpy [J/kg]

Range of Argument(s)10×103 ≤P≤3.0×106 [Pa]HPDD(P)≤H≤
HPT(P,453.15K) [J/kg]
0.1≤P≤30 [bar]HPDD(P)≤H≤
HPT(P,180◦ C) [J/kg]
see Fig.II-2.39-2 for H

6H
65

TPH2(P,H)
TPS(P,S)TPS∗: Temperature [K], [◦C]P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy [J/(kg·K)]

10×103 ≤P≤3.0×106 [Pa]SPDD(P)≤S≤
SPT(P,453.15K) [J/(kg·K)]
0.1≤P≤30 [bar]SPDD(P)≤S≤
SPT(P,180◦ C) [J/(kg·K)]
see Fig.II-2.39-3 for S

6S
98
70

TPS2(P,S)TPSEUP(P)TPV(P,V)

TPV∗: Temperature [K], [◦ C]
P∗: Pressure [Pa], [bar]V: Speciﬁc Volume [m3 /kg]

10×103 ≤P≤3.0×106 [Pa]VPDD(P)≤V≤
VPT(P,453.15K) [m3 /kg]
0.1≤P≤30 [bar]VPDD(P)≤V≤
VPT(P,180◦ C) [m3 /kg]

41
100
40

TRPL(‘A’)
TSBP(P)
TSP(P)

74
75
42

TSPD(P)TSPDD(P)UPD(P)43

UPDD(P)79

UPS(P,S)

44

UPT(P,T)45

UPX(P,X)

46

UTD(T)

TSP∗: Saturation Temperature [K], [◦C]P∗: Pressure [Pa], [bar]1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]UPD: Speciﬁc Internal Energy of Saturated
Liquid [J/kg]
P∗: Pressure [Pa], [bar]UPDD: Speciﬁc Internal Energy of Saturated
Vapor [J/kg]
P∗: Pressure [Pa], [bar]UPS: Speciﬁc Internal Energy [J/kg]
P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy [J/(kg·K)]

1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]

UPT: Speciﬁc Internal Energy [J/kg]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

UPX: Speciﬁc Internal Energy of Mixture [J/kg]
P∗: Pressure [Pa], [bar]
X: Dryness Fraction [–]UTD: Speciﬁc Internal Energy of Saturated
Liquid [J/kg]
T∗: Temperature [K], [◦ C]

1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]10×103 ≤P≤3.0×106 [Pa]SPDD(P)≤S≤
SPT(P,453.15K) [J/(kg·K)]
0.1≤P≤30 [bar]SPDD(P)≤S≤
SPT(P,180◦ C) [J/(kg·K)]
see Fig.II-2.39-3 for S
10×103 ≤P≤3.0×106 [Pa]TSP(P)≤T≤453.15 [K]
0.1≤P≤30 [bar]TSP(P)≤T≤180 [◦ C]
see Fig.II-2.39-1
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]0≤X≤1.0 [–]173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]

364

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.39–1

No.
47

Name of
Function
UTDD(T)

48

UTX(T,X)

49

VPD(P)50

VPDD(P)80

VPS(P,S)

51

VPT(P,T)52

VPX(P,X)

53

VTD(T)54

VTDD(T)

55

VTX(T,X)

8E
8F
83
8G
8H
56

WPD(P)WPDD(P)
WPT(P,T)WTD(T)WTDD(T)
XPH(P,H)57

XPS(P,S)58

XPU(P,U)59

XPV(P,V)

R152a Function (cont’d)

Function and Argument(s)UTDD: Speciﬁc Internal Energy of Saturated
Vapor [J/kg]
T∗: Temperature [K], [◦C]
UTX: Speciﬁc Internal Energy of Mixture [J/kg]
T∗: Temperature [K], [◦C]
X: Dryness Fraction [–]VPD: Speciﬁc Volume of Saturated Liquid [m3 /kg]P∗: Pressure [Pa], [bar]VPDD: Speciﬁc Volume of Saturated Vapor [m3 /kg]P∗: Pressure [Pa], [bar]VPS: Speciﬁc Volume [m3 /kg]P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy[J/(kg·K)]

VPT: Speciﬁc Volume [m3 /kg]P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

Range of Argument(s)173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
0≤X≤1.0 [–]1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]10×103 ≤P≤3.0×106 [Pa]SPDD(P)≤S≤
SPT(P,453.15K) [J/(kg·K)]
0.1≤P≤30 [bar]SPDD(P)≤S≤
SPT(P,180◦ C) [J/(kg·K)]
see Fig.II-2.39-3 for S
10×103 ≤P≤3.0×106 [Pa]TSP(P)≤T≤453.15 [K]

VPX: Speciﬁc Volume of Mixture [m3/kg]
P∗: Pressure [Pa], [bar]
X: Dryness Fraction [–]VTD: Speciﬁc Volume of Saturated Liquid [m3 /kg]
T∗: Temperature [K], [◦C]
VTDD: Speciﬁc Volume of Saturated Vapor [m3 /kg]
T∗: Temperature [K], [◦C]
VTX: Speciﬁc Volume of Mixture [m3 /kg]
T∗: Temperature [K], [◦C]
X: Dryness Fraction [–]0.1≤P≤30 [bar]TSP(P)≤T≤180 [◦ C]
see Fig.II-2.39-1
1.033×103 ≤P≤3.3832×106 [Pa]0.01033≤P≤33.832 [bar]0≤X≤1.0 [–]173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
173.15≤T≤371.15 [K]−100≤T≤98 [◦ C]
0≤X≤1.0 [–]XPH: Dryness Fraction [–]P∗: Pressure [Pa], [bar]H: Speciﬁc Enthalpy of Mixture [J/kg]
XPS: Dryness Fraction [–]P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy of Mixture [J/(kg·K)]
XPU: Dryness Fraction [–]P∗: Pressure [Pa], [bar]U: Speciﬁc Internal Energy of Mixture [J/kg]
XPV: Dryness Fraction [–]P∗: Pressure [Pa], [bar]V: Speciﬁc Volume of Mixture [m3 /kg]

1.033×103 ≤P<3.3832×106 [Pa]0.01033≤P<33.832 [bar]HPD(P)≤H≤HPDD(P) [J/kg]
1.033×103 ≤P<3.3832×106 [Pa]0.01033≤P<33.832 [bar]SPD(P)≤S≤SPDD(P) [J/(kg·K)]
1.033×103 ≤P<3.3832×106 [Pa]0.01033≤P<33.832 [bar]UPD(P)≤U≤UPDD(P) [J/kg]
1.033×103 ≤P<3.3832×106 [Pa]0.01033≤P<33.832 [bar]VPD(P)≤V≤VPDD(P) [m3 /kg]

CFC-152a(R152a)

365
Table II–2.39–1

No.
60

Name of
Function
XTH(T,H)

61

XTS(T,S)62

XTU(T,U)63

XTV(T,V)

R152a Function (cont’d)

Function and Argument(s)Range of Argument(s)XTH: Dryness Fraction [–]T∗: Temperature [K], [◦ C]
H: Speciﬁc Enthalpy of Mixture [J/kg]
XTS: Dryness Fraction [–]T∗: Temperature [K], [◦ C]
S: Speciﬁc Entropy of Mixture [J/(kg·K)]
XTU: Dryness Fraction [–]T∗: Temperature [K], [◦ C]
U: Speciﬁc Internal Energy of Mixture [J/kg]
XTV: Dryness Fraction [–]T∗: Temperature [K], [◦ C]
V: Speciﬁc Volume of Mixture [m3 /kg]

173.15≤T<371.15 [K]−100≤T<98 [◦ C]
HTD(T)≤H≤HTDD(T) [J/kg]
173.15≤T<371.15 [K]−100≤T<98 [◦ C]
STD(T)≤S≤STDD(T) [J/(kg·K)]
173.15≤T<371.15 [K]−100≤T<98 [◦ C]
UTD(T)≤U≤UTDD(T) [J/kg]
173.15≤T<371.15 [K]−100≤T<98 [◦ C]
VTD(T)≤V≤VTDD(T) [m3 /kg]

366

P-PROPATH: Pure Substances and Mixtures with Fixed Composition[bar]*10 6 [Pa]
50

5

4

30

3

20

2

10

1

0.01

0.001
170
-103.15

r pr

ess

u re

cur

ve

40

Critical point

Va poPressure, P

R152A

200
-73.15

300
26.85

400
126.85453.15 [K]
180 [C]

Temperature, T
Fig.II–2.39–1

Range of Arguments(P,T) for AKPT(P,T),CPPT(P,T),CVPT(P,T),HPT(P,T),
SPT(P,T),UPT(P,T) and VPT(P,T).

CFC-152a(R152a)367[bar]*10 6 [Pa]
5

R152A

3.3832
3

20

2

10

1

0.01

0.001
120

Sat

ura

ted

S a tu r a t e d v

liq

ui d

30

200

5K

33.832apor

4

Pressure, P

40

Critical point

T = 453.1

50

400

600

Enthalpy, H [J/kg]
Fig.II–2.39–2 Range of Arguments(P,H) for TPH(P,H).

725

*10

6

368

P-PROPATH: Pure Substances and Mixtures with Fixed Composition[bar]*10 6 [Pa]
5

R152A

3.3832
3

20

2

10

1

0.01

0.001
0.65

Sa tu

rate

d liq

uid

30

1

1.5

2

5K

33.832

Sa tu ra te d va po r

4

Pressure, P

40

Critical point

T = 4 5 3 .1

50

2.5

Entropy, S [J/(kg.K)]
Fig.II–2.39–3

Range of Arguments(P,S) for HPS(P,S),TPS(P,S),UPS(P,S)
and VPS(P,S).

3.1 *103