Refrigerant 500 (Azeotrope of R-12 and R-152a) properties of saturated liquid and saturated vapor
From ASHRAE (1997), with permission
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 |
|||
-90 |
2.482 |
88.8 |
15.887 |
-10.763 |
81.207 |
-0.02723 |
0.22156 |
0.2451 |
0.1425 |
|
|
|
1.336 |
|
0.0643 |
|
|
-80 |
3.456 |
87.9 |
11.676 |
-8.700 |
82.493 |
-0.02173 |
0.21846 |
0.2422 |
0.1456 |
|
|
|
1.231 |
|
0.0630 |
|
|
-70 |
4.725 |
87.0 |
8.7298 |
-6.593 |
83.779 |
-0.01626 |
0.21566 |
0.2398 |
0.1486 |
|
|
|
1.137 |
|
0.0617 |
|
|
-60 |
6.351 |
86.1 |
6.6307 |
-4.442 |
85.060 |
-0.01082 |
0.21312 |
0.2381 |
0.1517 |
|
|
|
1.053 |
|
0.0605 |
|
|
-50 |
8.404 |
85.2 |
5.1094 |
-2.244 |
86.337 |
-0.00540 |
0.21083 |
0.2371 |
0.1549 |
|
|
|
0.978 |
|
0.0592 |
|
|
-40 |
10.959 |
84.3 |
3.9895 |
0.000 |
87.604 |
0.00000 |
0.20875 |
0.2366 |
0.1582 |
|
|
|
0.911 |
|
0.0579 |
|
|
-38 |
11.538 |
84.1 |
3.8025 |
0.455 |
87.857 |
0.00108 |
0.20835 |
0.2366 |
0.1589 |
|
|
|
0.898 |
|
0.0577 |
|
|
-36 |
12.141 |
83.9 |
3.6260 |
0.911 |
88.109 |
0.00215 |
0.20797 |
0.2366 |
0.1595 |
|
|
|
0.886 |
|
0.0574 |
|
|
-34 |
12.768 |
83.7 |
3.4594 |
1.369 |
88.360 |
0.00323 |
0.20759 |
0.2367 |
0.1602 |
|
|
|
0.874 |
|
0.0572 |
|
|
-32 |
13.421 |
83.5 |
3.3019 |
1.829 |
88.612 |
0.00430 |
0.20722 |
0.2368 |
0.1609 |
|
|
|
0.862 |
|
0.0569 |
|
|
-30 |
14.101 |
83.4 |
3.1530 |
2.291 |
88.862 |
0.00538 |
0.20686 |
0.2369 |
0.1616 |
|
|
|
0.850 |
|
0.0567 |
|
|
-28.31 |
14.696 |
83.2 |
3.0335 |
2.683 |
89.074 |
0.00629 |
0.20656 |
0.2370 |
0.1622 |
|
|
|
0.841 |
|
0.0565 |
|
|
-28 |
14.807 |
83.2 |
3.0122 |
2.755 |
89.112 |
0.00645 |
0.20651 |
0.2370 |
0.1623 |
|
|
|
0.839 |
|
0.0564 |
|
|
-26 |
15.541 |
83.0 |
2.8789 |
3.221 |
89.362 |
0.00753 |
0.20616 |
0.2371 |
0.1630 |
|
|
|
0.828 |
|
0.0562 |
|
|
-24 |
16.304 |
82.8 |
2.7527 |
3.689 |
89.611 |
0.00860 |
0.20582 |
0.2373 |
0.1637 |
|
|
|
0.817 |
|
0.0559 |
|
|
-22 |
17.096 |
82.6 |
2.6331 |
4.159 |
89.859 |
0.00967 |
0.20548 |
0.2375 |
0.1644 |
|
|
|
0.806 |
|
0.0557 |
|
|
-20 |
17.918 |
82.4 |
2.5198 |
4.631 |
90.107 |
0.01074 |
0.20515 |
0.2378 |
0.1652 |
|
|
|
0.795 |
|
0.0554 |
|
|
-18 |
18.771 |
82.2 |
2.4124 |
5.104 |
90.355 |
0.01181 |
0.20483 |
0.2380 |
0.1659 |
|
|
|
0.785 |
|
0.0552 |
|
|
-16 |
19.656 |
82.0 |
2.3104 |
5.580 |
90.602 |
0.01288 |
0.20451 |
0.2383 |
0.1667 |
|
|
|
0.775 |
|
0.0550 |
|
|
-14 |
20.573 |
81.8 |
2.2137 |
6.057 |
90.848 |
0.01395 |
0.20420 |
0.2386 |
0.1674 |
|
|
|
0.765 |
|
0.0547 |
|
|
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 |
|||
-12 |
21.523 |
81.6 |
2.1218 |
6.537 |
91.093 |
0.01502 |
0.20390 |
0.2390 |
0.1682 |
|
|
|
0.755 |
|
0.0545 |
|
|
-10 |
22.507 |
81.4 |
2.0345 |
7.018 |
91.338 |
0.01609 |
0.20360 |
0.2393 |
0.1689 |
|
|
|
0.746 |
|
0.0542 |
|
|
-8 |
23.526 |
81.3 |
1.9515 |
7.501 |
91.583 |
0.01716 |
0.20331 |
0.2397 |
0.1697 |
|
|
|
0.736 |
|
0.0540 |
|
|
-6 |
24.581 |
81.1 |
1.8726 |
7.987 |
91.826 |
0.01822 |
0.20302 |
0.2402 |
0.1705 |
|
|
|
0.727 |
|
0.0537 |
|
|
-4 |
25.672 |
80.9 |
1.7975 |
8.474 |
92.069 |
0.01929 |
0.20274 |
0.2406 |
0.1713 |
|
|
|
0.718 |
|
0.0535 |
|
|
-2 |
26.801 |
80.7 |
1.7261 |
8.963 |
92.311 |
0.02035 |
0.20247 |
0.2411 |
0.1721 |
|
|
|
0.709 |
|
0.0532 |
|
|
0 |
27.968 |
80.5 |
1.6581 |
9.454 |
92.553 |
0.02142 |
0.20220 |
0.2416 |
0.1730 |
|
|
|
0.701 |
|
0.0530 |
|
|
2 |
29.174 |
80.3 |
1.5933 |
9.947 |
92.794 |
0.02248 |
0.20193 |
0.2422 |
0.1738 |
|
|
|
0.692 |
|
0.0527 |
|
|
4 |
30.420 |
80.1 |
1.5316 |
10.443 |
93.034 |
0.02355 |
0.20167 |
0.2427 |
0.1746 |
|
|
|
0.684 |
|
0.0525 |
|
|
6 |
31.707 |
79.9 |
1.4727 |
10.940 |
93.273 |
0.02461 |
0.20142 |
0.2433 |
0.1755 |
|
|
|
0.676 |
|
0.0522 |
|
|
8 |
33.036 |
79.7 |
1.4166 |
11.439 |
93.511 |
0.02567 |
0.20116 |
0.2439 |
0.1764 |
|
|
|
0.667 |
|
0.0520 |
|
|
10 |
34.408 |
79.5 |
1.3631 |
11.940 |
93.749 |
0.02673 |
0.20092 |
0.2446 |
0.1773 |
|
|
|
0.660 |
|
0.0517 |
|
|
12 |
35.823 |
79.3 |
1.3120 |
12.443 |
93.986 |
0.02780 |
0.20068 |
0.2453 |
0.1782 |
|
|
|
0.652 |
|
0.0515 |
|
|
14 |
37.282 |
79.1 |
1.2632 |
12.948 |
94.221 |
0.02886 |
0.20044 |
0.2460 |
0.1791 |
|
|
|
0.644 |
|
0.0512 |
|
|
16 |
38.787 |
78.9 |
1.2165 |
13.455 |
94.457 |
0.02992 |
0.20021 |
0.2467 |
0.1800 |
|
|
|
0.637 |
|
0.0510 |
|
|
18 |
40.338 |
78.7 |
1.1720 |
13.964 |
94.691 |
0.03098 |
0.19998 |
0.2475 |
0.1809 |
|
|
|
0.629 |
|
0.0507 |
|
|
20 |
41.936 |
78.5 |
1.1294 |
14.475 |
94.924 |
0.03204 |
0.19976 |
0.2483 |
0.1819 |
|
|
|
0.622 |
|
0.0505 |
|
|
22 |
43.583 |
78.3 |
1.0887 |
14.988 |
95.157 |
0.03310 |
0.19954 |
0.2491 |
0.1828 |
|
|
|
0.615 |
|
0.0503 |
|
|
24 |
45.278 |
78.0 |
1.0498 |
15.503 |
95.388 |
0.03416 |
0.19932 |
0.2500 |
0.1838 |
|
|
|
0.608 |
|
0.0500 |
|
|
26 |
47.024 |
77.8 |
1.0125 |
16.020 |
95.619 |
0.03522 |
0.19911 |
0.2509 |
0.1848 |
|
|
|
0.601 |
|
0.0498 |
|
|
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 |
|||
28 |
48.820 |
77.6 |
0.9768 |
16.539 |
95.848 |
0.03627 |
0.19890 |
0.2518 |
0.1858 |
|
|
|
0.595 |
|
0.0495 |
|
|
30 |
50.669 |
77.4 |
0.9426 |
17.060 |
96.077 |
0.03733 |
0.19870 |
0.2528 |
0.1868 |
|
|
|
0.588 |
|
0.0493 |
|
|
32 |
52.570 |
77.2 |
0.9099 |
17.583 |
96.304 |
0.03839 |
0.19850 |
0.2537 |
0.1878 |
|
|
|
0.581 |
|
0.0490 |
|
|
34 |
54.525 |
77.0 |
0.8785 |
18.109 |
96.531 |
0.03944 |
0.19830 |
0.2547 |
0.1889 |
|
|
|
0.575 |
|
0.0488 |
|
|
36 |
56.535 |
76.8 |
0.8485 |
18.636 |
96.757 |
0.04050 |
0.19811 |
0.2558 |
0.1900 |
|
|
|
0.569 |
|
0.0485 |
|
|
38 |
58.600 |
76.6 |
0.8196 |
19.165 |
96.981 |
0.04156 |
0.19792 |
0.2568 |
0.1910 |
|
|
|
0.563 |
|
0.0483 |
|
|
40 |
60.722 |
76.4 |
0.7920 |
19.697 |
97.204 |
0.04261 |
0.19773 |
0.2579 |
0.1921 |
|
|
|
0.557 |
|
0.0480 |
|
|
45 |
66.283 |
75.8 |
0.7276 |
21.034 |
97.758 |
0.04525 |
0.19727 |
0.2608 |
0.1950 |
|
|
|
0.542 |
|
0.0474 |
|
|
50 |
72.219 |
75.3 |
0.6694 |
22.385 |
98.304 |
0.04788 |
0.19684 |
0.2639 |
0.1979 |
|
|
|
0.528 |
|
0.0468 |
|
|
55 |
78.548 |
74.7 |
0.6168 |
23.749 |
98.843 |
0.05051 |
0.19642 |
0.2672 |
0.2009 |
|
|
|
0.514 |
|
0.0462 |
|
|
60 |
85.283 |
74.2 |
0.5690 |
25.127 |
99.374 |
0.05315 |
0.19602 |
0.2706 |
0.2041 |
|
|
|
0.501 |
|
0.0455 |
|
|
65 |
92.443 |
73.6 |
0.5255 |
26.519 |
99.895 |
0.05578 |
0.19563 |
0.2743 |
0.2074 |
|
|
|
0.489 |
|
0.0449 |
|
|
70 |
100.04 |
73.0 |
0.4860 |
27.924 |
100.41 |
0.05841 |
0.19526 |
0.2782 |
0.2108 |
|
|
|
0.477 |
|
0.0443 |
|
|
75 |
108.10 |
72.4 |
0.4499 |
29.344 |
100.91 |
0.06103 |
0.19489 |
0.2822 |
0.2143 |
|
|
|
0.465 |
|
0.0436 |
|
|
80 |
116.62 |
71.8 |
0.4169 |
30.777 |
101.41 |
0.06366 |
0.19454 |
0.2865 |
0.2180 |
|
|
|
0.454 |
|
0.0430 |
|
|
85 |
125.64 |
71.2 |
0.3867 |
32.225 |
101.89 |
0.06629 |
0.19419 |
0.2909 |
0.2218 |
|
|
|
0.444 |
|
0.0424 |
|
|
90 |
135.16 |
70.6 |
0.3591 |
33.688 |
102.36 |
0.06892 |
0.19385 |
0.2956 |
0.2257 |
|
|
|
0.433 |
|
0.0417 |
|
|
100 |
155.79 |
69.3 |
0.3103 |
36.661 |
103.27 |
0.07418 |
0.19319 |
0.3056 |
0.2341 |
|
|
|
0.414 |
|
0.0404 |
|
|
110 |
178.65 |
68.0 |
0.2689 |
39.699 |
104.12 |
0.07945 |
0.19253 |
0.3164 |
0.2431 |
|
|
|
0.396 |
|
0.0391 |
|
|
120 |
203.89 |
66.6 |
0.2335 |
42.807 |
104.90 |
0.08474 |
0.19186 |
0.3281 |
0.2527 |
|
|
|
0.379 |
|
0.0378 |
|
|
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 |
|||
130 |
231.65 |
65.1 |
0.2031 |
45.992 |
105.61 |
0.09005 |
0.19116 |
0.3406 |
0.2630 |
|
|
|
0.364 |
|
0.0365 |
|
|
140 |
262.10 |
63.5 |
0.1768 |
49.263 |
106.23 |
0.09540 |
0.19040 |
0.3540 |
0.2741 |
|
|
|
|
|
0.0352 |
|
|
150 |
295.41 |
61.9 |
0.1539 |
52.633 |
106.75 |
0.10080 |
0.18956 |
|
|
|
|
|
|
|
|
|
|
160 |
331.75 |
60.0 |
0.1338 |
56.119 |
107.12 |
0.10629 |
0.18859 |
|
|
|
|
|
|
|
|
|
|
170 |
371.35 |
58.1 |
0.1160 |
59.752 |
107.32 |
0.11189 |
0.18744 |
|
|
|
|
|
|
|
|
|
|
180 |
414.45 |
55.8 |
0.1000 |
63.577 |
107.29 |
0.11768 |
0.18602 |
|
|
|
|
|
|
|
|
|
|
190 |
461.34 |
53.3 |
0.0855 |
67.676 |
106.94 |
0.12376 |
0.18419 |
|
|
|
|
|
|
|
|
|
|
200 |
512.40 |
50.2 |
0.0719 |
72.219 |
106.07 |
0.13036 |
0.18168 |
|
|
|
|
|
|
|
|
|
|
210 |
568.16 |
46.1 |
0.0584 |
77.651 |
104.25 |
0.13809 |
0.17781 |
|
|
|
|
|
|
|
|
|
|
220 |
629.50 |
38.5 |
0.0416 |
86.497 |
99.240 |
0.15030 |
0.16905 |
|
|
|
|
|
|
|
|
|
|
222.0 |
641.9 |
31.1 |
0.0321 |
94.4 |
94.4 |
0.1608 |
0.1608 |
inf. | inf. | inf. | 0 |
0 |
|
|
inf. | inf. | 0 |