HCFC-22(R22)377

2.41 HCFC-22(R22)
All equations for HCFC-22(R22) are based on the Table from Japanese Association of Refrigeration [1].

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

2.41.2 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:

HCFC-22, R22, Refrigerant 22, Freon
22, Chlorodiﬂuoromethane
libjr22.a
JR22.LIB
r22-ssR22–SS.EXE

2.41.3 Important Constants and Others
Molecular Formula:
Relative Molecular Mass:
Gas Constant:

CHCF286.46996.15469 J/(kg·K)

Critical Constants:
Critical Pressure:
Critical Temperature:
Critical Speciﬁc Volume:

4.988×10 6Pa (49.88 bar)369.30 K (96.15 ◦C)
1.9493×10 −3m3 /kg

Reference State:
At 0◦ C, 1.0000 kcal(thermochemical)/(kg·K), i.e. 4184.0 J/(kg·K) and 100.00 kcal(thermochemical)/kg, i.e. 0.4184
×106 J/kg are assigned to the speciﬁc entropy and the speciﬁc enthalpy, respectively.

2.41.4 Formula
Equation of State:
Equation (II·2·1) in a function form of Z = Z(ρ, T ) in reference [1]. Here Z=compressibility, ρ=density and
T =temperature.
Vapor Pressure:
Equation (II·2·20) in reference [1].
Properties at Vapor-Liquid Equilibrium:saturated liquid: Equations (II·2·3), (II·2·9), (II·2·17) and (II·2·21) for speciﬁc volume, speciﬁc enthalpy, speciﬁc
entropy and isobaric speciﬁc heat, respectively. However the 5th term in right hand side of (II·2·17) has beencorrected as B5 (1 + 4Tr )(1 − Tr )4 .
saturated vapor: Equations (II·2·20) and (II·2·21) for speciﬁc volume, (II·2·20) and (II·2·6) for speciﬁc enthalpyand (II·2·20) and (II·2·25) for isobaric speciﬁc heat. However ln(Tr /T0 ) the 12th term in right hand side of(II·2·14) has been deleted. Equations (II·2·16) and (II·2·26) for isochoric speciﬁc heat.
All of these equations have been cited from reference [1].
Transport Properties:
Equations (II·3·9) and (II·3·1) in reference [1] for thermal conductivity and dynamic viscosity of saturated
liquid, respectively. Equations (II·3·10) and (II·3·5) in reference [1] for thermal conductivity of vapor at theatmospheric pressure and dynamic viscosity of the superheated vapor, respectively.
The Other Properties:

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P-PROPATH: Pure Substances and Mixtures with Fixed Composition

Equation (II·2·37) in reference [1] for surface tension.

References[1] Japanese Association of Refrigeration, Thermophysical Properties of Refrigerants (R22, Chlorodiﬂuoromethane), (1975).

HCFC-22(R22)379
Table II–2.41–1 HCFC-22 (R22) Function

No.
1
94
8A
8B
82

Name of
Function
AIPPT(P,T)
AJTPT(P,T)
AKPD(P)AKPDD(P)AKPT(P,T)

Function and Argument(s)AKPT: Isentropic Exponent [–]P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

Range of Argument(s)2.0×103 ≤P≤10×106 [Pa]183.15≤T≤473.15 [K]
0.02≤P≤100 [bar]−90≤T≤200 [◦ C]
see Fig.II-2.41-1

8C
8D
2

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
13

AMUPDD(P)AMUPT(P,T)

14

AMUTD(T)

15
92
90
91
93
16

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

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]64.54×103 ≤P≤4.97×106 [Pa]0.6454≤P≤49.7 [bar]223.15≤T≤369.15 [K]−50≤T≤96 [◦ C]
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
PST(173.15K)≤P≤PST(343.15K) [Pa](∼1.95×103 )(∼2.99×106 )◦PST(−100 C)≤P≤PST(70◦ C) [bar](∼0.0195)(∼29.9)

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=Dummy233.15≤T≤473.15 [K]−40≤T≤200 [◦ C]

AMUPD: Coeﬃcient of Viscosity of
Saturated Liquid [Pa·s]
P∗: Pressure [Pa], [bar]PST(173.15K)≤P≤PST(313.15K) [Pa](∼1.95×103 )(∼1.53×106 )◦PST(−100 C)≤P≤PST(40◦ C) [bar](∼0.0195)(∼15.3)

AMUPT: Coeﬃcient of Viscosity [Pa·s]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

100×103 ≤P≤6.0×106 [Pa]273.15≤T≤398.15 [K]

AMUTD: Coeﬃcient of Viscosity of
Saturated Liquid [Pa·s]
T∗: Temperature [K], [◦ C]

CPPD: Isobaric Speciﬁc Heat of Saturated
Liquid [J/(kg·K)]
P∗: Pressure [Pa], [bar]173.15≤T≤343.15 [K]−100≤T≤70 [◦ C]

1.0≤P≤60 [bar]0≤T≤125 [◦ C]
173.15≤T≤313.15 [K]−100≤T≤40 [◦ C]

PST(173.15K)≤P≤PST(298.15K) [Pa](∼1.95×103 )(∼1.04×106 )◦PST(−100 C)≤P≤PST(25◦ C) [bar](∼0.0195)(∼10.4)

380

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.41–1 HCFC-22 (R22) Function (cont’d)

No.
17

Name of
Function
CPPDD(P)18

CPPT(P,T)

19

CPTD(T)

20

CPTDD(T)21

CRP(‘A’)

7A
76

CVPD(P)
CVPDD(P)77

CVPT(P,T)

Function and Argument(s)CPPDD: Isobaric Speciﬁc Heat of Saturated
Vapor [J/(kg·K)]
P∗: Pressure [Pa], [bar]CPPT: Isobaric Speciﬁc Heat [J/(kg·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

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’: 0.58654×106 [J/kg] Speciﬁc EnthalpyP∗: ‘A’=‘P’: 4.988×106 [Pa], 49.88 [bar] Pressure
S: ‘A’=‘S’: 4.6799×103 [J/(kg·K)] Speciﬁc EntropyT∗: ‘A’=‘T’: 369.3 [K], 96.15 [◦ C] Temperature
V: ‘A’=‘V’: 1.9493×10−3 [m3 /kg] Speciﬁc Volume
CVPDD: Isochoric Speciﬁc Heat of Saturated
Vapor [J/(kg·K)]
P∗: Pressure [Pa], [bar]CVPT: Isochoric Speciﬁc Heat [J/(kg·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦C]

Range of Argument(s)PST(173.15K)≤P≤PST(353.15K) [Pa](∼1.95×103 )(∼3.66×106 )◦PST(−100 C)≤P≤PST(80◦ C) [bar](∼0.0195)(∼36.6)
2.0×103 ≤P≤10×106 [Pa]183.15≤T≤473.15 [K]
0.02≤P≤100 [bar]−90≤T≤200 [◦ C]
see Fig.II-2.41-1
173.15≤T≤298.15 [K]−100≤T≤25 [◦ C]
173.15≤T≤353.15 [K]−100≤T≤80 [◦ C]
one of ‘H’, ‘P’, ‘S’, ‘T’ and ‘V’

PST(173.15K)≤P≤PST(353.15K)(∼1.95×103 )(∼3.66×106 ) [Pa]PST(−100◦ C)≤P≤PST(80◦ C)(∼0.0195)(∼36.6) [bar]2.0×103 ≤P≤10×106 [Pa]183.15≤T≤473.15 [K]
0.02≤P≤100 [bar]−90≤T≤200 [◦ C]
see Fig.II-2.41-1

7B
78

CVTD(T)
CVTDD(T)

2A
2B
22
2C
2D
89

EPSPD(P)EPSPDD(P)EPSPT(P,T)
EPSTD(T)EPSTDD(T)FC(‘A’)

9A
96
95
9B
97

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

CVTDD: Isochoric Speciﬁc Heat of Saturated
Vapor [J/(kg·K)]
T∗: Temperature [K], [◦C]

173.15≤T≤353.15 [K]−100≤T≤80 [◦ C]

FC: Fundamental Constants
M: ‘A’=‘M’: 86.469 Relative Molecular Mass
R: ‘A’=‘R’: 96.15469 [J/(kg·K)] Gas Constant

one of ‘M’ and ‘R’HCFC-22(R22)381
Table II–2.41–1 HCFC-22 (R22) Function (cont’d)

No.
23

Name of
Function
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)

84

IDENTF(‘A’)

66
68
85
86
81

PLDT(T)
PMLT(T)
PRPD(P)PRPDD(P)
PRPT(P,T)

87
88
99
30

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

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

32

SIGT(T)

33

SPD(P)34

SPDD(P)

Function and Argument(s)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)]
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 [–]IDENTF: CHARACTER TYPE FUNCTION
for Package Identiﬁcation (Length 20)
C: ‘A’=‘C’: ‘CHCLF2’ Molecular Formula
S: ‘A’=‘S’: ‘HCFC-22 (R22)’ Name of Substance
V: ‘A’=‘V’: ‘10.1’ Version Number

Range of Argument(s)1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤15×106 [Pa]0.019≤P≤150 [bar]see Fig.II-2.41-3 for S
2.0×103 ≤P≤15×106 [Pa]178.15≤T≤473.15 [K]
0.02≤P≤150 [bar]−95≤T≤200 [◦C]
see Fig.II-2.41-1
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]0≤X≤1.0 [–]173.15≤T≤369.15 [K]−100≤T≤96 [◦C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]
0≤X≤1.0 [–]one of ‘C’, ‘S’ and ‘V’

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

P=Dummy233.15≤T≤423.15 [K]−40≤T≤150 [◦C]

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

173.15≤T≤369.3 [K]−100≤T≤96.15 [◦ C]

SIGP: Surface Tension [N/m]P∗: Pressure [Pa], [bar]PST(223.15K)≤P≤4.988×106 [Pa](∼64.54×103 )PST(−50◦ C)≤P≤49.88 [bar](∼0.6454)
223.15≤T≤369.3 [K]−50≤T≤96.15 [◦C]
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [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]1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]382

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.41–1 HCFC-22 (R22) Function (cont’d)

No.
35

Name of
Function
SPT(P,T)36

SPX(P,X)

37

STD(T)38

STDD(T)

39

STX(T,X)

67
69
64

TLDP(P)
TMLP(P)
TPH(P,H)

6H
65

TPH2(P,H)
TPS(P,S)

6S
98
70

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

Function and Argument(s)SPT: Speciﬁc Entropy [J/(kg·K)]
P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

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 [–]Range of Argument(s)2.0×103 ≤P≤15×106 [Pa]178.15≤T≤473.15 [K]
0.02≤P≤150 [bar]−95.0≤T≤200 [◦ C]
see Fig.II-2.41-1
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]0≤X≤1.0 [–]173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
0≤X≤1.0 [–]TPH∗: Temperature [K], [◦ C]
P∗: Pressure [Pa], [bar]H: Speciﬁc Enthalpy [J/kg]

1.9×103 ≤P≤15×106 [Pa]0.019≤P≤150 [bar]see Fig.II-2.41-2 for H

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

1.9×103 ≤P≤15×106 [Pa]0.019≤P≤150 [bar]see Fig.II-2.41-3 for S

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

1.9×103 ≤P≤0.66214×106 [Pa]VPD(P)≤V≤
VPT(P,473.15K) [m3 /kg]
0.66214×106 ≤P≤15×106 [Pa]0.0008≤V≤VPT(P,473.15K) [m3 /kg]
0.019≤P≤6.6214 [bar]VPD(P)≤V≤VPT(P,200◦ C) [m3 /kg]
6.6214≤P≤150 [bar]0.0008≤V≤VPT(P,200◦ 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)

TSP∗: Saturation Temperature [K], [◦C]P∗: Pressure [Pa], [bar]1.9×103 ≤P≤4.988×106 [Pa]0.019≤P≤49.88 [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)]

1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤15×106 [Pa]0.019≤P≤150 [bar]see Fig.II-2.41-3 for S

HCFC-22(R22)383
Table II–2.41–1 HCFC-22 (R22) Function (cont’d)No.
44

Name of
Function
UPT(P,T)45

UPX(P,X)

46

UTD(T)

47

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

WPD(P)WPDD(P)
WPT(P,T)

Function and Argument(s)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]
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
P∗: Pressure [Pa], [bar]S: Speciﬁc Entropy [J/(kg·K)]
VPT: Speciﬁc Volume [m3 /kg]P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

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 [–]WPT: Velocity of Sound [m/s]P∗: Pressure [Pa], [bar]T∗: Temperature [K], [◦ C]

Range of Argument(s)2.0×103 ≤P≤15×106 [Pa]178.15≤T≤473.15 [K]
0.02≤P≤150 [bar]−95≤T≤200 [◦ C]
see Fig.II-2.41-1
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]0≤X≤1.0 [–]173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
0≤X≤1.0 [–]1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]1.9×103 ≤P≤15×106 [Pa]0.019≤P≤150 [bar]see Fig.II-2.41-3 for S
2.0×103 ≤P≤15×106 [Pa]178.15≤T≤473.15 [K]
0.02≤P≤150 [bar]−95≤T≤200 [◦ C]
see Fig.II-2.41-1
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]0≤X≤1.0 [–]173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
173.15≤T≤369.15 [K]−100≤T≤96 [◦ C]
0≤X≤1.0 [–]2.0×103 ≤P≤10×106 [Pa]183.15≤T≤473.15 [K]
0.02≤P≤100 [bar]−90≤T≤200 [◦ C]
see Fig.II-2.41-1

8G
8H
56

WTD(T)WTDD(T)
XPH(P,H)57

XPS(P,S)

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)]

1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]HPD(P)≤H≤HPDD(P) [J/kg]
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]SPD(P)≤S≤SPDD(P) [J/(kg·K)]

384

P-PROPATH: Pure Substances and Mixtures with Fixed Composition
Table II–2.41–1 HCFC-22 (R22) Function (cont’d)

No.
58

Name of
Function
XPU(P,U)59

XPV(P,V)60

XTH(T,H)

61

XTS(T,S)62

XTU(T,U)63

XTV(T,V)

Function and Argument(s)Range of Argument(s)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]
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]

1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]UPD(P)≤U≤UPDD(P) [J/kg]
1.9×103 ≤P≤4.97×106 [Pa]0.019≤P≤49.7 [bar]VPD(P)≤V≤VPDD(P) [m3 /kg]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]HTD(T)≤H≤HTDD(T) [J/kg]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]
STD(T)≤S≤STDD(T) [J/(kg·K)]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]UTD(T)≤U≤UTDD(T) [J/kg]
173.15≤T≤369.15 [K]−100≤T≤96 [◦C]
VTD(T)≤V≤VTDD(T) [m3 /kg]

HCFC-22(R22)385[bar]*10 6 [Pa]
150

15

100

V = 0 .8 0 * 1 0-3 3
m /k g10

Critical point
5

0.02

0.002

or

pr

es

su

re

cu

rv

e

50

Va
p

Pressure, P

HCFC-22(R22)173.15-100273.150373.15100473.15 [K]
200 [C]

Temperature, T
Fig.II–2.41–1 Range of Arguments(P,T) for AKPT(P,T),CPPT(P,T),CVPT(P,T),HPT(P,T),
SPT(P,T),UPT(P,T),VPT(P,T) and WPT(P,T).

386

P-PROPATH: Pure Substances and Mixtures with Fixed Composition[bar]*10 6 [Pa]
150

15

100

10

50

5

0.00190.019

V = 0. 80 *1 0 -3m 3/k
tu

ra

te

d

liq

ui

d

Sa tu ra ted va po r

Critical point

Sa

Pressure, Pg

T = 4 7 3 .1

5K

HCFC-22(R22)

0.2

0.3

0.4

0.5

0.6

0.7

Enthalpy, H [J/kg]
Fig.II–2.41–2 Range of Arguments(P,H) for TPH(P,H).

0.8 *10 6

HCFC-22(R22)387[bar]*10 6 [Pa]
150

15

10

50

5

0.00190.019

T = 47 3. 15 K

100

V = 0.8 0* 10 -3m 3/kg

3

4

apor
te d v
ra
Sa tu

tur

ate

dl

iqu

id

Critical point

Sa

Pressure, P

HCFC-22(R22)5

Entropy, S [J/(kg.K)]
Fig.II–2.41–3 Range of Arguments(P,S) for HPS(P,S),TPS(P,S),UPS(P,S)
and VPS(P,S).

6 *10 6