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., °F |
Pressure, psia |
Density, lb/ft3 |
Volume, ft3/lb |
Enthalpy, Btu/lb |
Entropy, Btu/lb·°F |
Specific heat, cp, Btu/lb·°F |
cp/cv |
Velocity of sound, ft/s |
Viscosity, lbm/ft·h |
Thermal cond., Btu/h·ft·°F |
Surface tension, dyne/cm |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
-153.94 |
0.057 |
99.34 |
564.85 |
32.989 |
80.235 |
0.09154 |
0.27880 |
0.2740 |
0.1397 |
1.1628 |
3723 |
416 |
5.289 |
0.0160 |
|
|
28.15 |
-150 |
0.072 |
98.95 |
449.29 |
31.902 |
80.783 |
0.08801 |
0.27588 |
0.2776 |
0.1409 |
1.1615 |
3670 |
418 |
4.913 |
0.0163 |
|
|
27.76 |
-140 |
0.130 |
97.98 |
259.15 |
29.093 |
82.190 |
0.07908 |
0.26903 |
0.2837 |
0.1438 |
1.1583 |
3552 |
424 |
4.117 |
0.0168 |
|
|
26.78 |
-130 |
0.222 |
97.01 |
155.69 |
26.238 |
83.618 |
0.07029 |
0.26294 |
0.2870 |
0.1467 |
1.1554 |
3448 |
430 |
3.497 |
0.0173 |
|
|
25.81 |
-120 |
0.367 |
96.05 |
97.027 |
23.359 |
85.066 |
0.06169 |
0.25752 |
0.2886 |
0.1497 |
1.1528 |
3352 |
436 |
3.006 |
0.0179 |
|
|
24.86 |
-110 |
0.586 |
95.09 |
62.509 |
20.467 |
86.531 |
0.05330 |
0.25270 |
0.2895 |
0.1527 |
1.1507 |
3261 |
441 |
2.613 |
0.0184 |
|
|
23.92 |
-100 |
0.906 |
94.13 |
41.496 |
17.569 |
88.011 |
0.04513 |
0.24842 |
0.2900 |
0.1559 |
1.1489 |
3173 |
446 |
2.292 |
0.0190 |
|
|
22.99 |
-90 |
1.363 |
93.17 |
28.303 |
14.665 |
89.504 |
0.03717 |
0.24462 |
0.2906 |
0.1591 |
1.1475 |
3087 |
451 |
2.028 |
0.0195 |
0.0721 |
|
22.08 |
-80 |
1.997 |
92.21 |
19.783 |
11.755 |
91.005 |
0.02940 |
0.24125 |
0.2913 |
0.1624 |
1.1466 |
3001 |
456 |
1.808 |
0.0200 |
0.0706 |
|
21.17 |
-75 |
2.396 |
91.73 |
16.680 |
10.297 |
91.759 |
0.02559 |
0.23972 |
0.2917 |
0.1641 |
1.1463 |
2959 |
458 |
1.712 |
0.0203 |
0.0699 |
|
20.73 |
-70 |
2.859 |
91.25 |
14.138 |
8.837 |
92.514 |
0.02182 |
0.23827 |
0.2922 |
0.1658 |
1.1462 |
2916 |
460 |
1.623 |
0.0206 |
0.0691 |
|
20.28 |
-65 |
3.393 |
90.77 |
12.045 |
7.374 |
93.270 |
0.01809 |
0.23691 |
0.2928 |
0.1676 |
1.1461 |
2874 |
462 |
1.542 |
0.0209 |
0.0684 |
|
19.84 |
-60 |
4.006 |
90.28 |
10.310 |
5.907 |
94.026 |
0.01440 |
0.23563 |
0.2935 |
0.1694 |
1.1462 |
2832 |
464 |
1.466 |
0.0212 |
0.0677 |
0.00405 |
19.40 |
-55 |
4.707 |
89.80 |
8.8656 |
4.437 |
94.783 |
0.01075 |
0.23443 |
0.2943 |
0.1712 |
1.1465 |
2790 |
466 |
1.396 |
0.0214 |
0.0669 |
0.00423 |
18.96 |
-50 |
5.505 |
89.31 |
7.6569 |
2.963 |
95.539 |
0.00713 |
0.23331 |
0.2951 |
0.1731 |
1.1468 |
2747 |
468 |
1.331 |
0.0217 |
0.0662 |
0.00440 |
18.52 |
-45 |
6.409 |
88.82 |
6.6405 |
1.484 |
96.295 |
0.00355 |
0.23225 |
0.2960 |
0.1750 |
1.1473 |
2705 |
470 |
1.271 |
0.0220 |
0.0654 |
0.00457 |
18.09 |
-40 |
7.429 |
88.32 |
5.7819 |
0.000 |
97.050 |
0.00000 |
0.23125 |
0.2970 |
0.1769 |
1.1479 |
2663 |
471 |
1.215 |
0.0223 |
0.0647 |
0.00473 |
17.66 |
-35 |
8.577 |
87.83 |
5.0533 |
1.489 |
97.804 |
0.00352 |
0.23032 |
0.2981 |
0.1789 |
1.1487 |
2621 |
473 |
1.163 |
0.0225 |
0.0639 |
0.00489 |
17.23 |
-30 |
9.862 |
87.33 |
4.4325 |
2.984 |
98.556 |
0.00701 |
0.22945 |
0.2992 |
0.1810 |
1.1497 |
2579 |
474 |
1.113 |
0.0228 |
0.0632 |
0.00505 |
16.81 |
-25 |
11.297 |
86.82 |
3.9014 |
4.484 |
99.306 |
0.01048 |
0.22863 |
0.3004 |
0.1831 |
1.1508 |
2536 |
476 |
1.068 |
0.0231 |
0.0625 |
0.00521 |
16.38 |
Temp., °F |
Pressure, psia |
Density, lb/ft3 |
Volume, ft3/lb |
Enthalpy, Btu/lb |
Entropy, Btu/lb·°F |
Specific heat, cp, Btu/lb·°F |
cp/cv |
Velocity of sound, ft/s |
Viscosity, lbm/ft·h |
Thermal cond., Btu/h·ft·°F |
Surface tension, dyne/cm |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
-20 |
12.895 |
86.32 |
3.4452 |
5.991 |
100.054 |
0.01392 |
0.22786 |
0.3017 |
0.1852 |
1.1521 |
2494 |
477 |
1.024 |
0.0234 |
0.0617 |
0.00536 |
15.96 |
-15 |
14.667 |
85.81 |
3.0519 |
7.505 |
100.799 |
0.01733 |
0.22714 |
0.3031 |
0.1874 |
1.1535 |
2452 |
478 |
0.984 |
0.0237 |
0.0610 |
0.00550 |
15.54 |
-14.92 |
14.696 |
85.80 |
3.0462 |
7.529 |
100.811 |
0.01739 |
0.22713 |
0.3031 |
0.1874 |
1.1535 |
2451 |
478 |
0.983 |
0.0237 |
0.0610 |
0.00551 |
15.54 |
-10 |
16.626 |
85.29 |
2.7116 |
9.026 |
101.542 |
0.02073 |
0.22647 |
0.3045 |
0.1897 |
1.1552 |
2410 |
479 |
0.946 |
0.0240 |
0.0602 |
0.00565 |
15.13 |
-5 |
18.787 |
84.77 |
2.4161 |
10.554 |
102.280 |
0.02409 |
0.22584 |
0.3060 |
0.1920 |
1.1570 |
2367 |
480 |
0.910 |
0.0243 |
0.0595 |
0.00579 |
14.71 |
0 |
21.162 |
84.25 |
2.1587 |
12.090 |
103.015 |
0.02744 |
0.22525 |
0.3075 |
0.1943 |
1.1590 |
2325 |
481 |
0.876 |
0.0245 |
0.0588 |
0.00593 |
14.30 |
5 |
23.767 |
83.72 |
1.9337 |
13.634 |
103.745 |
0.03077 |
0.22470 |
0.3091 |
0.1968 |
1.1613 |
2283 |
481 |
0.843 |
0.0248 |
0.0580 |
0.00607 |
13.89 |
10 |
26.617 |
83.18 |
1.7365 |
15.187 |
104.471 |
0.03408 |
0.22418 |
0.3108 |
0.1993 |
1.1637 |
2240 |
482 |
0.813 |
0.0251 |
0.0573 |
0.00621 |
13.48 |
15 |
29.726 |
82.64 |
1.5630 |
16.748 |
105.192 |
0.03737 |
0.22370 |
0.3126 |
0.2018 |
1.1664 |
2198 |
482 |
0.784 |
0.0254 |
0.0565 |
0.00635 |
13.08 |
20 |
33.110 |
82.10 |
1.4101 |
18.318 |
105.907 |
0.04065 |
0.22325 |
0.3144 |
0.2045 |
1.1694 |
2155 |
482 |
0.756 |
0.0257 |
0.0558 |
0.00649 |
12.67 |
25 |
36.785 |
81.55 |
1.2749 |
19.897 |
106.617 |
0.04391 |
0.22283 |
0.3162 |
0.2072 |
1.1726 |
2113 |
482 |
0.730 |
0.0260 |
0.0550 |
0.00662 |
12.27 |
30 |
40.768 |
80.99 |
1.1550 |
21.486 |
107.320 |
0.04715 |
0.22244 |
0.3182 |
0.2100 |
1.1761 |
2070 |
482 |
0.705 |
0.0263 |
0.0543 |
0.00676 |
11.87 |
35 |
45.075 |
80.42 |
1.0484 |
23.085 |
108.016 |
0.05038 |
0.22207 |
0.3202 |
0.2129 |
1.1799 |
2027 |
482 |
0.681 |
0.0267 |
0.0536 |
0.00690 |
11.48 |
40 |
49.724 |
79.85 |
0.9534 |
24.694 |
108.705 |
0.05359 |
0.22172 |
0.3223 |
0.2159 |
1.1841 |
1985 |
482 |
0.658 |
0.0270 |
0.0528 |
0.00704 |
11.08 |
45 |
54.732 |
79.26 |
0.8685 |
26.314 |
109.386 |
0.05679 |
0.22140 |
0.3244 |
0.2190 |
1.1886 |
1942 |
481 |
0.636 |
0.0273 |
0.0521 |
0.00718 |
10.69 |
50 |
60.116 |
78.67 |
0.7925 |
27.944 |
110.058 |
0.05998 |
0.22110 |
0.3267 |
0.2222 |
1.1935 |
1899 |
481 |
0.615 |
0.0276 |
0.0513 |
0.00732 |
10.30 |
55 |
65.895 |
78.07 |
0.7243 |
29.586 |
110.722 |
0.06316 |
0.22081 |
0.3290 |
0.2255 |
1.1988 |
1856 |
480 |
0.595 |
0.0280 |
0.0506 |
0.00746 |
9.91 |
60 |
72.087 |
77.46 |
0.6630 |
31.239 |
111.376 |
0.06633 |
0.22054 |
0.3314 |
0.2289 |
1.2046 |
1813 |
479 |
0.576 |
0.0283 |
0.0499 |
0.00761 |
9.53 |
65 |
78.712 |
76.84 |
0.6077 |
32.905 |
112.019 |
0.06949 |
0.22028 |
0.3339 |
0.2325 |
1.2109 |
1770 |
477 |
0.557 |
0.0286 |
0.0491 |
0.00776 |
9.15 |
70 |
85.787 |
76.21 |
0.5577 |
34.583 |
112.652 |
0.07264 |
0.22003 |
0.3366 |
0.2363 |
1.2178 |
1726 |
476 |
0.539 |
0.0290 |
0.0484 |
0.00791 |
8.77 |
Temp., °F |
Pressure, psia |
Density, lb/ft3 |
Volume, ft3/lb |
Enthalpy, Btu/lb |
Entropy, Btu/lb·°F |
Specific heat, cp, Btu/lb·°F |
cp/cv |
Velocity of sound, ft/s |
Viscosity, lbm/ft·h |
Thermal cond., Btu/h·ft·°F |
Surface tension, dyne/cm |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
75 |
93.333 |
75.57 |
0.5125 |
36.274 |
113.272 |
0.07578 |
0.21979 |
0.3393 |
0.2402 |
1.2252 |
1683 |
474 |
0.522 |
0.0294 |
0.0476 |
0.00806 |
8.39 |
80 |
101.370 |
74.91 |
0.4715 |
37.978 |
113.880 |
0.07892 |
0.21957 |
0.3422 |
0.2444 |
1.2334 |
1640 |
472 |
0.505 |
0.0297 |
0.0469 |
0.00822 |
8.02 |
85 |
109.920 |
74.25 |
0.4343 |
39.697 |
114.475 |
0.08205 |
0.21934 |
0.3453 |
0.2487 |
1.2424 |
1596 |
470 |
0.489 |
0.0301 |
0.0462 |
0.00838 |
7.65 |
90 |
119.000 |
73.57 |
0.4004 |
41.430 |
115.055 |
0.08518 |
0.21912 |
0.3485 |
0.2533 |
1.2522 |
1552 |
468 |
0.473 |
0.0305 |
0.0454 |
0.00855 |
7.28 |
95 |
128.630 |
72.87 |
0.3694 |
43.179 |
115.619 |
0.08830 |
0.21890 |
0.3519 |
0.2582 |
1.2630 |
1509 |
466 |
0.458 |
0.0309 |
0.0447 |
0.00872 |
6.91 |
100 |
138.830 |
72.16 |
0.3411 |
44.943 |
116.166 |
0.09142 |
0.21868 |
0.3555 |
0.2633 |
1.2748 |
1465 |
463 |
0.443 |
0.0313 |
0.0439 |
0.00890 |
6.55 |
105 |
149.630 |
71.43 |
0.3153 |
46.725 |
116.694 |
0.09454 |
0.21845 |
0.3594 |
0.2689 |
1.2880 |
1421 |
460 |
0.428 |
0.0318 |
0.0432 |
0.00908 |
6.20 |
110 |
161.050 |
70.68 |
0.2915 |
48.524 |
117.203 |
0.09766 |
0.21822 |
0.3635 |
0.2748 |
1.3026 |
1376 |
457 |
0.414 |
0.0322 |
0.0425 |
0.00926 |
5.84 |
115 |
173.110 |
69.91 |
0.2697 |
50.343 |
117.690 |
0.10078 |
0.21797 |
0.3680 |
0.2812 |
1.3189 |
1332 |
454 |
0.400 |
0.0327 |
0.0417 |
0.00946 |
5.49 |
120 |
185.840 |
69.12 |
0.2497 |
52.181 |
118.153 |
0.10391 |
0.21772 |
0.3728 |
0.2881 |
1.3372 |
1288 |
450 |
0.387 |
0.0332 |
0.0410 |
0.00965 |
5.15 |
125 |
199.250 |
68.31 |
0.2312 |
54.040 |
118.591 |
0.10704 |
0.21744 |
0.3781 |
0.2957 |
1.3577 |
1243 |
446 |
0.374 |
0.0338 |
0.0403 |
0.00986 |
4.80 |
130 |
213.380 |
67.47 |
0.2141 |
55.923 |
119.000 |
0.11018 |
0.21715 |
0.3839 |
0.3040 |
1.3810 |
1198 |
442 |
0.361 |
0.0343 |
0.0395 |
0.01007 |
4.47 |
135 |
228.250 |
66.60 |
0.1983 |
57.830 |
119.377 |
0.11333 |
0.21683 |
0.3903 |
0.3133 |
1.4075 |
1153 |
437 |
0.348 |
0.0349 |
0.0388 |
0.01029 |
4.13 |
140 |
243.880 |
65.70 |
0.1836 |
59.764 |
119.720 |
0.11650 |
0.21648 |
0.3974 |
0.3236 |
1.4379 |
1108 |
432 |
0.335 |
0.0356 |
0.0380 |
0.01052 |
3.81 |
145 |
260.310 |
64.77 |
0.1700 |
61.727 |
120.024 |
0.11968 |
0.21609 |
0.4053 |
0.3353 |
1.4731 |
1062 |
427 |
0.323 |
0.0363 |
0.0373 |
0.01075 |
3.48 |
150 |
277.570 |
63.80 |
0.1574 |
63.722 |
120.284 |
0.12288 |
0.21566 |
0.4144 |
0.3486 |
1.5143 |
1017 |
421 |
0.311 |
0.0370 |
0.0366 |
0.01100 |
3.17 |
155 |
295.690 |
62.78 |
0.1455 |
65.752 |
120.495 |
0.12611 |
0.21517 |
0.4247 |
0.3640 |
1.5630 |
971 |
416 |
0.298 |
0.0378 |
0.0358 |
0.01125 |
2.86 |
160 |
314.690 |
61.72 |
0.1345 |
67.823 |
120.650 |
0.12938 |
0.21463 |
0.4368 |
0.3821 |
1.6213 |
924 |
409 |
0.286 |
0.0387 |
0.0351 |
0.01151 |
2.55 |
165 |
334.620 |
60.60 |
0.1241 |
69.939 |
120.739 |
0.13268 |
0.21400 |
0.4511 |
0.4036 |
1.6921 |
877 |
403 |
0.274 |
0.0397 |
0.0343 |
0.01178 |
2.26 |
170 |
355.510 |
59.42 |
0.1144 |
72.106 |
120.753 |
0.13603 |
0.21329 |
0.4683 |
0.4299 |
1.7798 |
829 |
396 |
0.262 |
0.0407 |
0.0336 |
0.01206 |
1.97 |
Temp., °F |
Pressure, psia |
Density, lb/ft3 |
Volume, ft3/lb |
Enthalpy, Btu/lb |
Entropy, Btu/lb·°F |
Specific heat, cp, Btu/lb·°F |
cp/cv |
Velocity of sound, ft/s |
Viscosity, lbm/ft·h |
Thermal cond., Btu/h·ft·°F |
Surface tension, dyne/cm |
||||||
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
Liquid |
Vapor |
|||
175 |
377.400 |
58.16 |
0.1052 |
74.335 |
120.677 |
0.13945 |
0.21247 |
0.4896 |
0.4627 |
1.8908 |
781 |
388 |
0.249 |
0.0420 |
0.0329 |
0.01235 |
1.69 |
180 |
400.340 |
56.80 |
0.0965 |
76.636 |
120.493 |
0.14295 |
0.21151 |
0.5168 |
0.5048 |
2.0354 |
731 |
380 |
0.237 |
0.0434 |
0.0321 |
0.01265 |
1.41 |
185 |
424.370 |
55.33 |
0.0881 |
79.027 |
120.175 |
0.14655 |
0.21037 |
0.5527 |
0.5612 |
2.2309 |
680 |
372 |
0.224 |
0.0450 |
0.0314 |
0.01296 |
1.15 |
190 |
449.550 |
53.70 |
0.0801 |
81.534 |
119.684 |
0.15029 |
0.20901 |
0.6031 |
0.6406 |
2.5087 |
627 |
363 |
0.211 |
0.0469 |
|
|
0.90 |
195 |
475.950 |
51.86 |
0.0723 |
84.196 |
118.963 |
0.15423 |
0.20733 |
0.6794 |
0.7612 |
2.9338 |
572 |
353 |
0.197 |
0.0493 |
|
|
0.67 |
200 |
503.640 |
49.70 |
0.0646 |
87.088 |
117.906 |
0.15847 |
0.20519 |
0.8100 |
0.9673 |
3.6640 |
514 |
343 |
0.182 |
0.0523 |
|
|
0.45 |
205 |
532.720 |
47.00 |
0.0566 |
90.368 |
116.289 |
0.16326 |
0.20226 |
1.0906 |
1.4042 |
5.2174 |
450 |
331 |
0.164 |
0.0566 |
|
|
0.25 |
210 |
563.340 |
43.03 |
0.0474 |
94.548 |
113.411 |
0.16933 |
0.19750 |
|
|
|
378 |
316 |
0.142 |
0.0639 |
|
|
0.09 |
213.85 |
588.270 |
32.04 |
0.0312 |
103.775 |
103.775 |
0.18128 |
0.18128 |
inf. | inf. | inf. | 0 |
0 |
|
|
inf. | inf. | 0 |