Refrigerant 134a (Tetrafluoroethane) properties of saturated liquid and saturated vapor
From ASHRAE (1997), with permission
Click here to see the properties of superheated R-134a
Values shown in blue
are at the triple point
Values shown in red are at the
boiling point
Values shown in bold are at the
critical point
Temp., °C |
Absolute pressure, MPa |
Density, kg/m3 |
Volume, m3/kg |
Enthalpy, kJ/kg |
Entropy, kJ/kg·K |
Specific heat, cp, kJ/kg·K |
cp/cv |
Velocity of sound, m/s |
Viscosity, |
Thermal cond., mW/m·K |
Surface tension, mN/m |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
-103.30 | 0.00039 | 1591.2 | 35.263 | 71.89 | 335.07 | 0.4143 | 1.9638 | 1.147 | 0.585 | 1.163 | 1135 | 127 | 2186.6 | 6.63 | - | - | 28.15 |
-100 |
0.00056 |
1581.9 |
25.039 |
75.71 |
337.00 |
0.4366 |
1.9456 |
1.168 |
0.592 |
1.161 |
1111 |
128 |
1958.2 |
6.76 |
- |
- |
27.56 |
-90 |
0.00153 |
1553.9 |
9.7191 |
87.59 |
342.94 |
0.5032 |
1.8975 |
1.201 |
0.614 |
1.155 |
1051 |
131 |
1445.6 |
7.16 |
- |
- |
25.81 |
-80 |
0.00369 |
1526.2 |
4.2504 |
99.65 |
349.03 |
0.5674 |
1.8585 |
1.211 |
0.637 |
1.151 |
999 |
134 |
1109.9 |
7.57 |
- |
- |
24.11 |
-70 |
0.00801 |
1498.6 |
2.0528 |
111.78 |
355.23 |
0.6286 |
1.8269 |
1.215 |
0.660 |
1.148 |
951 |
137 |
879.6 |
7.97 |
125.8 |
- |
22.44 |
-60 |
0.01594 |
1471.0 |
1.0770 |
123.96 |
361.51 |
0.6871 |
1.8016 |
1.220 |
0.685 |
1.146 |
904 |
139 |
715.4 |
8.38 |
121.1 |
- |
20.81 |
-50 |
0.02945 |
1443.1 |
0.60560 |
136.21 |
367.83 |
0.7432 |
1.7812 |
1.229 |
0.712 |
1.146 |
858 |
142 |
594.3 |
8.79 |
116.5 |
7.12 |
19.22 |
-40 |
0.05122 |
1414.8 |
0.36095 |
148.57 |
374.16 |
0.7973 |
1.7649 |
1.243 |
0.740 |
1.148 |
812 |
144 |
502.2 |
9.20 |
111.9 |
8.19 |
17.66 |
-30 |
0.08436 |
1385.9 |
0.22596 |
161.10 |
380.45 |
0.8498 |
1.7519 |
1.260 |
0.771 |
1.152 |
765 |
145 |
430.4 |
9.62 |
107.3 |
9.16 |
16.13 |
-28 |
0.09268 |
1380.0 |
0.20682 |
163.62 |
381.70 |
0.8601 |
1.7497 |
1.264 |
0.778 |
1.153 |
756 |
145 |
418.0 |
9.71 |
106.3 |
9.35 |
15.83 |
-26.07 | 0.10132 | 1374.3 | 0.19016 | 166.07 | 382.90 | 0.8701 | 1.7476 | 1.268 | 0.784 | 1.154 | 747 | 146 | 406.4 | 9.79 | 105.4 | 9.52 | 15.54 |
-26 |
0.10164 |
1374.1 |
0.18961 |
166.16 |
382.94 |
0.8704 |
1.7476 |
1.268 |
0.785 |
1.154 |
747 |
146 |
406.0 |
9.79 |
105.4 |
9.53 |
15.53 |
-24 |
0.11127 |
1368.2 |
0.17410 |
168.70 |
384.19 |
0.8806 |
1.7455 |
1.273 |
0.791 |
1.155 |
738 |
146 |
394.6 |
9.88 |
104.5 |
9.71 |
15.23 |
-22 |
0.12160 |
1362.2 |
0.16010 |
171.26 |
385.43 |
0.8908 |
1.7436 |
1.277 |
0.798 |
1.156 |
728 |
146 |
383.6 |
9.96 |
103.6 |
9.89 |
14.93 |
-20 |
0.13268 |
1356.2 |
0.14744 |
173.82 |
386.66 |
0.9009 |
1.7417 |
1.282 |
0.805 |
1.157 |
719 |
146 |
373.1 |
10.05 |
102.6 |
10.07 |
14.63 |
-18 |
0.14454 |
1350.2 |
0.13597 |
176.39 |
387.89 |
0.9110 |
1.7399 |
1.286 |
0.812 |
1.159 |
710 |
146 |
363.0 |
10.14 |
101.7 |
10.24 |
14.33 |
-16 |
0.15721 |
1344.1 |
0.12556 |
178.97 |
389.11 |
0.9211 |
1.7383 |
1.291 |
0.820 |
1.160 |
700 |
147 |
353.3 |
10.22 |
100.8 |
10.42 |
14.04 |
-14 |
0.17074 |
1338.0 |
0.11610 |
181.56 |
390.33 |
0.9311 |
1.7367 |
1.296 |
0.827 |
1.162 |
691 |
147 |
344.0 |
10.31 |
99.9 |
10.59 |
13.74 |
-12 |
0.18516 |
1331.8 |
0.10749 |
184.16 |
391.55 |
0.9410 |
1.7351 |
1.301 |
0.835 |
1.164 |
682 |
147 |
335.0 |
10.40 |
99.0 |
10.76 |
13.45 |
-10 |
0.20052 |
1325.6 |
0.09963 |
186.78 |
392.75 |
0.9509 |
1.7337 |
1.306 |
0.842 |
1.166 |
672 |
147 |
326.3 |
10.49 |
98.0 |
10.93 |
13.16 |
Temp., °C |
Absolute pressure, MPa |
Density, kg/m3 |
Volume, m3/kg |
Enthalpy, kJ/kg |
Entropy, kJ/kg·K |
Specific heat, cp, kJ/kg·K |
cp/cv |
Velocity of sound, m/s |
Viscosity, |
Thermal cond., mW/m·K |
Surface tension, mN/m |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
-8 |
0.21684 |
1319.3 |
0.09246 |
189.40 |
393.95 |
0.9608 |
1.7323 |
1.312 |
0.850 |
1.168 |
663 |
147 |
318.0 |
10.58 |
97.1 |
11.10 |
12.87 |
-6 |
0.23418 |
1313.0 |
0.08591 |
192.03 |
395.15 |
0.9707 |
1.7310 |
1.317 |
0.858 |
1.170 |
654 |
147 |
309.9 |
10.67 |
96.2 |
11.28 |
12.58 |
-4 |
0.25257 |
1306.6 |
0.07991 |
194.68 |
396.33 |
0.9805 |
1.7297 |
1.323 |
0.866 |
1.172 |
644 |
147 |
302.2 |
10.76 |
95.3 |
11.45 |
12.29 |
-2 |
0.27206 |
1300.2 |
0.07440 |
197.33 |
397.51 |
0.9903 |
1.7285 |
1.329 |
0.875 |
1.175 |
635 |
147 |
294.7 |
10.85 |
94.3 |
11.62 |
12.00 |
0 |
0.29269 |
1293.7 |
0.06935 |
200.00 |
398.68 |
1.0000 |
1.7274 |
1.335 |
0.883 |
1.178 |
626 |
147 |
287.4 |
10.94 |
93.4 |
11.79 |
11.71 |
2 |
0.31450 |
1287.1 |
0.06470 |
202.68 |
399.84 |
1.0097 |
1.7263 |
1.341 |
0.892 |
1.180 |
616 |
147 |
280.4 |
11.03 |
92.5 |
11.96 |
11.43 |
4 |
0.33755 |
1280.5 |
0.06042 |
205.37 |
401.00 |
1.0194 |
1.7252 |
1.347 |
0.901 |
1.183 |
607 |
147 |
273.6 |
11.13 |
91.6 |
12.13 |
11.14 |
6 |
0.36186 |
1273.8 |
0.05648 |
208.08 |
402.14 |
1.0291 |
1.7242 |
1.353 |
0.910 |
1.187 |
598 |
147 |
267.0 |
11.22 |
90.7 |
12.31 |
10.86 |
8 |
0.38749 |
1267.0 |
0.05284 |
210.80 |
403.27 |
1.0387 |
1.7233 |
1.360 |
0.920 |
1.190 |
588 |
147 |
260.6 |
11.32 |
89.7 |
12.48 |
10.58 |
10 |
0.41449 |
1260.2 |
0.04948 |
213.53 |
404.40 |
1.0483 |
1.7224 |
1.367 |
0.930 |
1.193 |
579 |
146 |
254.3 |
11.42 |
88.8 |
12.66 |
10.30 |
12 |
0.44289 |
1253.3 |
0.04636 |
216.27 |
405.51 |
1.0579 |
1.7215 |
1.374 |
0.939 |
1.197 |
569 |
146 |
248.3 |
11.52 |
87.9 |
12.84 |
10.02 |
14 |
0.47276 |
1246.3 |
0.04348 |
219.03 |
406.61 |
1.0674 |
1.7207 |
1.381 |
0.950 |
1.201 |
560 |
146 |
242.5 |
11.62 |
87.0 |
13.02 |
9.74 |
16 |
0.50413 |
1239.3 |
0.04081 |
221.80 |
407.70 |
1.0770 |
1.7199 |
1.388 |
0.960 |
1.206 |
550 |
146 |
236.8 |
11.72 |
86.0 |
13.20 |
9.47 |
18 |
0.53706 |
1232.1 |
0.03833 |
224.59 |
408.78 |
1.0865 |
1.7191 |
1.396 |
0.971 |
1.210 |
541 |
146 |
231.2 |
11.82 |
85.1 |
13.39 |
9.19 |
20 |
0.57159 |
1224.9 |
0.03603 |
227.40 |
409.84 |
1.0960 |
1.7183 |
1.404 |
0.982 |
1.215 |
532 |
145 |
225.8 |
11.92 |
84.2 |
13.57 |
8.92 |
22 |
0.60777 |
1217.5 |
0.03388 |
230.21 |
410.89 |
1.1055 |
1.7176 |
1.412 |
0.994 |
1.220 |
522 |
145 |
220.5 |
12.03 |
83.3 |
13.76 |
8.65 |
24 |
0.64566 |
1210.1 |
0.03189 |
233.05 |
411.93 |
1.1149 |
1.7169 |
1.420 |
1.006 |
1.226 |
512 |
145 |
215.4 |
12.14 |
82.4 |
13.96 |
8.38 |
26 |
0.68531 |
1202.6 |
0.03003 |
235.90 |
412.95 |
1.1244 |
1.7162 |
1.429 |
1.018 |
1.231 |
503 |
144 |
210.4 |
12.25 |
81.4 |
14.15 |
8.11 |
28 |
0.72676 |
1194.9 |
0.02829 |
238.77 |
413.95 |
1.1338 |
1.7155 |
1.438 |
1.031 |
1.238 |
493 |
144 |
205.5 |
12.36 |
80.5 |
14.35 |
7.84 |
30 |
0.77008 |
1187.2 |
0.02667 |
241.65 |
414.94 |
1.1432 |
1.7149 |
1.447 |
1.044 |
1.244 |
454 |
143 |
200.7 |
12.48 |
79.6 |
14.56 |
7.57 |
Temp., °C |
Absolute pressure, MPa |
Density, kg/m3 |
Volume, m3/kg |
Enthalpy, kJ/kg |
Entropy, kJ/kg·K |
Specific heat, cp, kJ/kg·K |
cp/cv |
Velocity of sound, m/s |
Viscosity, |
Thermal cond., mW/m·K |
Surface tension, mN/m |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
32 |
0.81530 |
1179.3 |
0.02516 |
244.55 |
415.90 |
1.1527 |
1.7142 |
1.457 |
1.058 |
1.251 |
474 |
143 |
196.0 |
12.60 |
78.7 |
14.76 |
7.31 |
34 |
0.86250 |
1171.3 |
0.02374 |
247.47 |
416.85 |
1.1621 |
1.7135 |
1.467 |
1.073 |
1.259 |
465 |
142 |
191.4 |
12.72 |
77.7 |
14.97 |
7.05 |
36 |
0.91172 |
1163.2 |
0.02241 |
250.41 |
417.78 |
1.1715 |
1.7129 |
1.478 |
1.088 |
1.267 |
455 |
142 |
186.9 |
12.84 |
76.8 |
15.19 |
6.78 |
38 |
0.96301 |
1154.9 |
0.02116 |
253.37 |
418.69 |
1.1809 |
1.7122 |
1.489 |
1.104 |
1.276 |
445 |
141 |
182.5 |
12.97 |
75.9 |
15.41 |
6.52 |
40 |
1.0165 |
1146.5 |
0.01999 |
256.35 |
419.58 |
1.1903 |
1.7115 |
1.500 |
1.120 |
1.285 |
436 |
140 |
178.2 |
13.10 |
75.0 |
15.64 |
6.27 |
42 |
1.0721 |
1137.9 |
0.01890 |
259.35 |
420.44 |
1.1997 |
1.7108 |
1.513 |
1.138 |
1.295 |
426 |
140 |
174.0 |
13.24 |
74.1 |
15.86 |
6.01 |
44 |
1.1300 |
1129.2 |
0.01786 |
262.38 |
421.28 |
1.2091 |
1.7101 |
1.525 |
1.156 |
1.306 |
416 |
139 |
169.8 |
13.38 |
73.1 |
16.10 |
5.76 |
46 |
1.1901 |
1120.3 |
0.01689 |
265.42 |
422.09 |
1.2185 |
1.7094 |
1.539 |
1.175 |
1.318 |
407 |
138 |
165.7 |
13.52 |
72.2 |
16.34 |
5.51 |
45 |
1.2527 |
1111.3 |
0.01598 |
268.49 |
422.88 |
1.2279 |
1.7086 |
1.553 |
1.196 |
1.331 |
397 |
137 |
161.7 |
13.67 |
71.3 |
16.59 |
5.26 |
50 |
1.3177 |
1102.0 |
0.01511 |
271.59 |
423.63 |
1.2373 |
1.7078 |
1.569 |
1.218 |
1.345 |
387 |
137 |
157.7 |
13.83 |
70.4 |
16.84 |
5.01 |
52 |
1.3852 |
1092.6 |
0.01430 |
274.71 |
424.35 |
1.2468 |
1.7070 |
1.585 |
1.241 |
1.360 |
377 |
136 |
153.8 |
13.99 |
69.5 |
17.10 |
4.76 |
54 |
1.4553 |
1082.9 |
0.01353 |
277.86 |
425.03 |
1.2562 |
1.7061 |
1.602 |
1.266 |
1.377 |
367 |
135 |
149.9 |
14.16 |
68.5 |
17.36 |
4.52 |
56 |
1.5280 |
1073.0 |
0.01280 |
281.04 |
425.68 |
1.2657 |
1.7051 |
1.621 |
1.293 |
1.395 |
358 |
134 |
146.1 |
14.33 |
67.6 |
17.63 |
4.28 |
58 |
1.6033 |
1062.8 |
0.01212 |
284.25 |
426.29 |
1.2752 |
1.7041 |
1.641 |
1.322 |
1.416 |
348 |
133 |
142.3 |
14.51 |
66.7 |
17.91 |
4.04 |
60 |
1.6815 |
1052.4 |
0.01146 |
287.49 |
426.86 |
1.2847 |
1.7031 |
1.663 |
1.354 |
1.438 |
338 |
132 |
138.6 |
14.71 |
65.8 |
18.19 |
3.81 |
62 |
1.7625 |
1041.7 |
0.01085 |
290.77 |
427.37 |
1.2943 |
1.7019 |
1.686 |
1.388 |
1.463 |
328 |
131 |
134.9 |
14.91 |
64.9 |
18.48 |
3.57 |
64 |
1.8464 |
1030.7 |
0.01026 |
294.08 |
427.84 |
1.3039 |
1.7007 |
1.712 |
1.426 |
1.490 |
318 |
129 |
131.2 |
15.12 |
63.9 |
18.78 |
3.34 |
66 |
1.9334 |
1019.4 |
0.00970 |
297.44 |
428.25 |
1.3136 |
1.6993 |
1.740 |
1.468 |
1.522 |
308 |
128 |
127.5 |
15.35 |
63.0 |
19.09 |
3.12 |
68 |
2.0234 |
1007.7 |
0.00917 |
300.84 |
428.61 |
1.3234 |
1.6979 |
1.772 |
1.515 |
1.557 |
298 |
127 |
123.9 |
15.59 |
62.1 |
19.40 |
2.89 |
70 |
2.1165 |
995.6 |
0.00867 |
304.29 |
428.89 |
1.3332 |
1.6963 |
1.806 |
1.567 |
1.597 |
287 |
126 |
120.3 |
15.85 |
61.2 |
19.72 |
2.67 |
Temp., °C |
Absolute pressure, MPa |
Density, kg/m3 |
Volume, m3/kg |
Enthalpy, kJ/kg |
Entropy, kJ/kg·K |
Specific heat, cp, kJ/kg·K |
cp/cv |
Velocity of sound, m/s |
Viscosity, |
Thermal cond., mW/m·K |
Surface tension, mN/m |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
72 |
2.2130 |
983.1 |
0.00818 |
307.79 |
429.10 |
1.3430 |
1.6945 |
1.846 |
1.626 |
1.642 |
277 |
124 |
116.7 |
16.12 |
60.3 |
20.05 |
2.46 |
74 |
2.3127 |
970.0 |
0.00772 |
311.34 |
429.23 |
1.3530 |
1.6926 |
1.890 |
1.693 |
1.695 |
267 |
123 |
113.1 |
16.41 |
59.3 |
20.39 |
2.24 |
76 |
2.4159 |
956.5 |
0.00728 |
314.96 |
429.27 |
1.3631 |
1.6905 |
1.941 |
1.770 |
1.757 |
256 |
121 |
109.4 |
16.73 |
58.4 |
20.74 |
2.03 |
78 |
2.5227 |
942.3 |
0.00686 |
318.65 |
429.20 |
1.3733 |
1.6881 |
2.000 |
1.861 |
1.830 |
246 |
120 |
105.8 |
17.08 |
57.5 |
21.09 |
1.83 |
80 |
2.6331 |
927.4 |
0.00646 |
322.41 |
429.02 |
1.3837 |
1.6855 |
2.069 |
1.967 |
1.917 |
235 |
118 |
102.1 |
17.46 |
56.6 |
21.46 |
1.63 |
85 |
2.9259 |
886.2 |
0.00550 |
332.27 |
427.91 |
1.4105 |
1.6775 |
2.313 |
2.345 |
2.231 |
207 |
113 |
92.7 |
18.59 |
54.3 |
22.41 |
1.15 |
90 |
3.2445 |
836.9 |
0.00461 |
343.01 |
425.48 |
1.4392 |
1.6663 |
2.766 |
3.064 |
2.832 |
178 |
108 |
82.6 |
20.15 |
- |
- |
0.72 |
95 |
3.5916 |
771.6 |
0.00374 |
355.43 |
420.60 |
1.4720 |
1.6490 |
3.961 |
4.942 |
4.424 |
145 |
102 |
70.9 |
22.59 |
- |
- |
0.33 |
100 |
3.9721 |
646.7 |
0.00265 |
374.02 |
407.08 |
1.5207 |
1.6093 |
- |
- |
- |
105 |
94 |
53.0 |
28.86 |
- |
- |
0.03 |
101.03 |
4.056 |
513.3 |
0.002 |
389.79 |
389.79 |
1.5593 |
1.5593 |
inf. |
inf. |
inf. |
0 |
0 |
- |
- |
inf. |
inf. |
0.00 |