Related Resources: thermodynamics

R-134a Thermodynamic Properties Table

Thermodynamics
Heat Transfer

R-134a Thermodynamic Properties Tables for Temperatures -70 °C to 101.2 °C

Where:

v = Specific volume
u = Specific internal energy
h = Specific enthalpy
s = Specific entropy

Temp.
( °C)
Press.
(kPa)
Specific Volume,
m3/ kg)
Internal Energy,
kJ/kg
Sat. Liquid
vf
Evap.
v fg
Sat. Vapor
vg
Sat. Liquid
uf
Evap.
ufg
Sat. Vapor
ug
− 70
8.3
0.000675
1.97207
1.97274
119.46
218.74
338.20
− 65
11.7
0.000679
1.42915
1.42983
123.18
217.76
340.94
− 60
16.3
0.000684
1.05199
1.05268
127.52
216.19
343.71
− 55
22.2
0.000689
0.78609
0.78678
132.36
214.14
346.50
− 50
29.9
0.000695
0.59587
0.59657
137.60
211.71
349.31
− 45
39.6
0.000701
0.45783
0.45853
143.15
208.99
352.15
− 40
51.8
0.000708
0.35625
0.35696
148.95
206.05
355.00
− 35
66.8
0.000715
0.28051
0.28122
154.93
202.93
357.86
− 30
85.1
0.000722
0.22330
0.22402
161.06
199.67
360.73
− 26.3
101.3
0.000728
0.18947
0.19020
165.73
197.16
362.89
− 25
107.2
0.000730
0.17957
0.18030
167.30
196.31
363.61
− 20
133.7
0.000738
0.14576
0.14649
173.65
192.85
366.50
− 15
165.0
0.000746
0.11932
0.12007
180.07
189.32
369.39
− 10
201.7
0.000755
0.09845
0.09921
186.57
185.70
372.27
− 5
244.5
0.000764
0.08181
0.08257
193.14
182.01
375.15
0
294.0
0.000773
0.06842
0.06919
199.77
178.24
378.01
5
350.9
0.000783
0.05755
0.05833
206.48
174.38
380.85
10
415.8
0.000794
0.04866
0.04945
213.25
170.42
383.67
15
489.5
0.000805
0.04133
0.04213
220.10
166.35
386.45
20
572.8
0.000817
0.03524
0.03606
227.03
162.16
389.19
25
666.3
0.000829
0.03015
0.03098
234.04
157.83
391.87
30
771.0
0.000843
0.02587
0.02671
241.14
153.34
394.48
35
887.6
0.000857
0.02224
0.02310
248.34
148.68
397.02
40
1017.0
0.000873
0.01915
0.02002
255.65
143.81
399.46
45
1160.2
0.000890
0.01650
0.01739
263.08
138.71
401.79
50
1318.1
0.000908
0.01422
0.01512
270.63
133.35
403.98
55
1491.6
0.000928
0.01224
0.01316
278.33
127.68
406.01
60
1681.8
0.000951
0.01051
0.01146
286.19
121.66
407.85
65
1889.9
0.000976
0.00899
0.00997
294.24
115.22
409.46
70
2117.0
0.001005
0.00765
0.00866
302.51
108.27
410.78
75
2364.4
0.001038
0.00645
0.00749
311.06
100.68
411.74
80
2633.6
0.001078
0.00537
0.00645
319.96
92.26
412.22
85
2926.2
0.001128
0.00437
0.00550
329.35
82.67
412.01
90
3244.5
0.001195
0.00341
0.00461
339.51
71.24
410.75
95
3591.5
0.001297
0.00243
0.00373
351.17
56.25
407.42
100
3973.2
0.001557
0.00108
0.00264
368.55
28.19
396.74
101.2
4064.0
0.001969
0
0.00197
382.97
0
382.97

Temperature Conversions

Pressure Conversions

  • kPa to psi, 0.145038 lbs/in2 = 1kPa / 6.89479 (kPa / psi) or Divide kPa by 6.89479
  • psi to kPa, 6.89476 kPa = 1 psi (multiply psi by 6.89476)

Volume Conversions

  • m3/ kg to in3/lbs, 27679.9 in3/lbs = 1 m3/ kg, ( multiply m3/ kg by 27679.9 to get in3/lbs )
  • in3/lbs to m3/ kg, 3.6127 x 10-5 m3/ kg = 1 in3/lbs ( divide in3/lbs by 3.6127 x 10-5 )

Energy Conversions

  • BTU/lbs to kJ/kg, 1 kJ/k = 0.429923 BTU/lbs ( multiple BTU/lbs by 0.429923 )
  • kJ / kg to Btu / lbs, 1 BTU/lbs = 2.326 kJ/kg ( divide kJ/kg by 2.326 )
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