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., °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 |
|||
-70 |
0.01490 |
1427.7 |
1.1277 |
132.22 |
346.69 |
0.7162 |
1.7719 |
1.031 |
0.591 |
- |
- |
- |
571.3 |
- |
112.1 |
- |
- |
-68 |
0.01688 |
1422.6 |
1.0045 |
133.92 |
347.77 |
0.7245 |
1.7669 |
1.026 |
0.596 |
- |
- |
- |
554.3 |
- |
111.3 |
- |
- |
-66 |
0.01906 |
1417.6 |
0.89695 |
135.63 |
348.85 |
0.7328 |
1.7621 |
1.021 |
0.600 |
- |
- |
- |
537.9 |
- |
110.5 |
- |
- |
-64 |
0.02148 |
1412.5 |
0.80283 |
137.36 |
349.92 |
0.7411 |
1.7574 |
1.017 |
0.605 |
- |
- |
- |
522.3 |
- |
109.7 |
- |
- |
-62 |
0.02414 |
1407.5 |
0.72024 |
139.10 |
351.00 |
0.7494 |
1.7529 |
1.013 |
0.610 |
- |
- |
- |
507.2 |
- |
108.9 |
- |
- |
-60 |
0.02706 |
1402.4 |
0.64758 |
140.85 |
352.07 |
0.7576 |
1.7486 |
1.009 |
0.614 |
- |
- |
- |
492.8 |
- |
108.1 |
- |
- |
-58 |
0.03027 |
1397.2 |
0.58351 |
142.62 |
353.15 |
0.7659 |
1.7444 |
1.006 |
0.619 |
- |
- |
- |
479.0 |
- |
107.3 |
- |
- |
-56 |
0.03379 |
1392.1 |
0.52687 |
144.40 |
354.22 |
0.7741 |
1.7404 |
1.002 |
0.623 |
- |
- |
- |
465.7 |
- |
106.5 |
- |
- |
-54 |
0.03762 |
1386.9 |
0.47669 |
146.19 |
355.30 |
0.7823 |
1.7365 |
1.000 |
0.628 |
- |
- |
- |
453.0 |
- |
105.7 |
- |
- |
-52 |
0.04181 |
1381.7 |
0.43213 |
148.00 |
356.37 |
0.7905 |
1.7327 |
0.997 |
0.633 |
- |
- |
- |
440.7 |
- |
104.9 |
- |
- |
-50 |
0.04637 |
1376.5 |
0.39248 |
149.82 |
357.44 |
0.7987 |
1.7291 |
0.995 |
0.638 |
- |
- |
- |
429.0 |
- |
104.1 |
- |
- |
-48 |
0.05132 |
1371.3 |
0.35712 |
151.65 |
358.51 |
0.8068 |
1.7256 |
0.994 |
0.642 |
- |
- |
- |
417.7 |
- |
103.3 |
- |
- |
-46 |
0.05669 |
1366.1 |
0.32553 |
153.50 |
359.58 |
0.8150 |
1.7222 |
0.992 |
0.647 |
- |
- |
- |
406.8 |
- |
102.6 |
- |
- |
-44 |
0.06250 |
1360.8 |
0.29724 |
155.36 |
360.64 |
0.8231 |
1.7190 |
0.991 |
0.652 |
- |
- |
- |
396.3 |
- |
101.8 |
- |
- |
-42 |
0.06878 |
1355.5 |
0.27186 |
157.24 |
361.70 |
0.8313 |
1.7158 |
0.990 |
0.657 |
- |
- |
- |
386.3 |
- |
101.0 |
- |
- |
-40 |
0.07556 |
1350.1 |
0.24905 |
159.13 |
362.76 |
0.8394 |
1.7128 |
0.990 |
0.662 |
- |
- |
- |
376.6 |
- |
100.2 |
- |
- |
-38 |
0.08286 |
1344.8 |
0.22852 |
161.03 |
363.82 |
0.8475 |
1.7099 |
0.990 |
0.667 |
- |
- |
- |
367.2 |
- |
99.4 |
- |
- |
-36 |
0.09071 |
1339.4 |
0.21000 |
162.95 |
364.87 |
0.8556 |
1.7070 |
0.990 |
0.672 |
- |
- |
- |
358.2 |
- |
98.7 |
- |
- |
-34 |
0.09915 |
1334.0 |
0.19326 |
164.89 |
365.92 |
0.8637 |
1.7043 |
0.991 |
0.677 |
- |
- |
- |
349.6 |
- |
97.9 |
- |
- |
-33.51 |
0.10132 |
1332.7 |
0.18937 |
165.37 |
366.17 |
0.8657 |
1.7036 |
0.991 |
0.679 |
- |
- |
- |
347.5 |
- |
97.7 |
- |
- |
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 |
0.10819 |
1328.6 |
0.17811 |
166.83 |
366.96 |
0.8718 |
1.7017 |
0.992 |
0.683 |
- |
- |
- |
341.2 |
- |
97.1 |
- |
- |
-30 |
0.11787 |
1323.1 |
0.16438 |
168.80 |
368.00 |
0.8799 |
1.6991 |
0.994 |
0.688 |
- |
- |
- |
333.1 |
- |
96.3 |
- |
- |
-28 |
0.12823 |
1317.6 |
0.15191 |
170.77 |
369.04 |
0.8879 |
1.6967 |
0.996 |
0.694 |
- |
- |
- |
325.4 |
- |
95.6 |
- |
- |
-26 |
0.13929 |
1312.1 |
0.14057 |
172.76 |
370.07 |
0.8960 |
1.6943 |
0.998 |
0.699 |
- |
- |
- |
317.9 |
- |
94.8 |
- |
- |
-24 |
0.15108 |
1306.5 |
0.13024 |
174.77 |
371.10 |
0.9040 |
1.6920 |
1.000 |
0.705 |
- |
- |
- |
310.6 |
- |
94.0 |
- |
- |
-22 |
0.16364 |
1300.9 |
0.12082 |
176.79 |
372.12 |
0.9121 |
1.6898 |
1.003 |
0.711 |
- |
- |
- |
303.6 |
- |
93.2 |
- |
- |
-20 |
0.17700 |
1295.3 |
0.11222 |
178.83 |
373.14 |
0.9201 |
1.6877 |
1.007 |
0.717 |
- |
- |
- |
296.9 |
- |
92.5 |
- |
- |
-18 |
0.19120 |
1289.6 |
0.10434 |
180.88 |
374.15 |
0.9281 |
1.6856 |
1.010 |
0.723 |
- |
- |
- |
290.3 |
- |
91.7 |
- |
- |
-16 |
0.20627 |
1283.9 |
0.09713 |
182.94 |
375.16 |
0.9361 |
1.6836 |
1.015 |
0.729 |
- |
- |
- |
284.0 |
- |
90.9 |
- |
- |
-14 |
0.22225 |
1278.1 |
0.09052 |
185.02 |
376.16 |
0.9441 |
1.6817 |
1.019 |
0.736 |
- |
- |
- |
277.9 |
- |
90.2 |
- |
- |
-12 |
0.23916 |
1272.3 |
0.08444 |
187.11 |
377.15 |
0.9521 |
1.6798 |
1.024 |
0.742 |
- |
- |
- |
272.0 |
- |
89.4 |
- |
- |
-10 |
0.25705 |
1266.5 |
0.07886 |
189.22 |
378.14 |
0.9601 |
1.6780 |
1.029 |
0.749 |
- |
- |
- |
266.3 |
- |
88.6 |
- |
- |
-8 |
0.27596 |
1260.6 |
0.07371 |
191.35 |
379.12 |
0.9681 |
1.6763 |
1.035 |
0.756 |
- |
- |
- |
260.8 |
- |
87.9 |
- |
- |
-6 |
0.29591 |
1254.7 |
0.06897 |
193.49 |
380.10 |
0.9761 |
1.6746 |
1.041 |
0.763 |
- |
- |
- |
255.4 |
- |
87.1 |
- |
- |
-4 |
0.31695 |
1248.8 |
0.06459 |
195.64 |
381.07 |
0.9841 |
1.6730 |
1.047 |
0.771 |
- |
- |
- |
250.2 |
- |
86.3 |
- |
- |
-2 |
0.33912 |
1242.8 |
0.06055 |
197.81 |
382.03 |
0.9920 |
1.6714 |
1.054 |
0.778 |
- |
- |
- |
245.2 |
- |
85.5 |
- |
- |
0 |
0.36246 |
1236.7 |
0.05680 |
200.00 |
382.98 |
1.0000 |
1.6699 |
1.062 |
0.786 |
- |
- |
- |
240.4 |
- |
84.8 |
- |
- |
2 |
0.38699 |
1230.6 |
0.05334 |
202.20 |
383.93 |
1.0080 |
1.6684 |
1.069 |
0.794 |
- |
- |
- |
235.6 |
- |
84.0 |
- |
- |
4 |
0.41277 |
1224.4 |
0.05012 |
204.42 |
384.87 |
1.0159 |
1.6670 |
1.077 |
0.802 |
- |
- |
- |
231.1 |
- |
83.2 |
- |
- |
6 |
0.43982 |
1218.2 |
0.04714 |
206.65 |
385.80 |
1.0239 |
1.6656 |
1.086 |
0.810 |
- |
- |
- |
226.6 |
- |
82.5 |
- |
- |
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 |
0.46820 |
1212.0 |
0.04437 |
208.90 |
386.72 |
1.0318 |
1.6643 |
1.095 |
0.819 |
- |
- |
- |
222.3 |
- |
81.7 |
- |
- |
10 |
0.49793 |
1205.6 |
0.04179 |
211.16 |
387.63 |
1.0397 |
1.6630 |
1.104 |
0.828 |
- |
- |
- |
218.2 |
- |
80.9 |
- |
- |
12 |
0.52907 |
1199.2 |
0.03939 |
213.44 |
388.53 |
1.0477 |
1.6617 |
1.114 |
0.837 |
- |
- |
- |
214.1 |
- |
80.1 |
- |
- |
14 |
0.56165 |
1192.8 |
0.03716 |
215.74 |
389.43 |
1.0556 |
1.6605 |
1.124 |
0.846 |
- |
- |
- |
210.2 |
- |
79.3 |
- |
- |
16 |
0.59571 |
1186.3 |
0.03507 |
218.05 |
390.31 |
1.0635 |
1.6593 |
1.135 |
0.856 |
- |
- |
- |
206.4 |
- |
78.6 |
- |
- |
18 |
0.63129 |
1179.7 |
0.03312 |
220.38 |
391.19 |
1.0714 |
1.6581 |
1.146 |
0.866 |
- |
- |
- |
202.7 |
- |
77.8 |
- |
- |
20 |
0.66844 |
1173.0 |
0.03130 |
222.73 |
392.05 |
1.0794 |
1.6570 |
1.157 |
0.876 |
- |
- |
- |
199.1 |
- |
77.0 |
- |
- |
22 |
0.70719 |
1166.3 |
0.02959 |
225.09 |
392.90 |
1.0873 |
1.6558 |
1.169 |
0.887 |
- |
- |
- |
195.6 |
- |
76.2 |
- |
- |
24 |
0.74759 |
1159.4 |
0.02800 |
227.47 |
393.74 |
1.0952 |
1.6548 |
1.181 |
0.897 |
- |
- |
- |
192.2 |
- |
75.4 |
- |
- |
26 |
0.78968 |
1152.5 |
0.02650 |
229.87 |
394.57 |
1.1031 |
1.6537 |
1.194 |
0.908 |
- |
- |
- |
188.9 |
- |
74.6 |
- |
- |
28 |
0.83350 |
1145.6 |
0.02510 |
232.28 |
395.38 |
1.1110 |
1.6526 |
1.207 |
0.920 |
- |
- |
- |
185.7 |
- |
73.9 |
- |
- |
30 |
0.87911 |
1138.5 |
0.02379 |
234.71 |
396.18 |
1.1189 |
1.6516 |
1.221 |
0.931 |
- |
- |
- |
182.6 |
- |
73.1 |
- |
- |
32 |
0.92653 |
1131.3 |
0.02255 |
237.16 |
396.97 |
1.1269 |
1.6506 |
1.235 |
0.943 |
- |
- |
- |
179.5 |
- |
72.3 |
- |
- |
34 |
0.97581 |
1124.0 |
0.02139 |
239.63 |
397.75 |
1.1348 |
1.6496 |
1.250 |
0.955 |
- |
- |
- |
176.6 |
- |
71.5 |
- |
- |
36 |
0.1027 |
1116.7 |
0.02029 |
242.12 |
398.50 |
1.1427 |
1.6486 |
1.265 |
0.968 |
- |
- |
- |
173.7 |
- |
70.7 |
- |
- |
38 |
0.1080 |
1109.2 |
0.01926 |
244.62 |
399.25 |
1.1506 |
1.6476 |
1.280 |
0.981 |
- |
- |
- |
170.9 |
- |
69.9 |
- |
- |
40 |
1.1353 |
1101.6 |
0.01829 |
247.15 |
399.97 |
1.1586 |
1.6466 |
1.296 |
0.994 |
- |
- |
- |
168.2 |
- |
69.1 |
- |
- |
45 |
1.2822 |
1082.0 |
0.01609 |
253.56 |
401.71 |
1.1784 |
1.6441 |
1.338 |
1.029 |
- |
- |
- |
161.6 |
- |
67.0 |
- |
- |
50 |
1.4426 |
1061.6 |
0.01418 |
260.10 |
403.31 |
1.1984 |
1.6415 |
1.383 |
1.066 |
- |
- |
- |
155.5 |
- |
65.0 |
- |
- |
55 |
1.6173 |
1040.2 |
0.01251 |
266.79 |
404.77 |
1.2184 |
1.6389 |
1.430 |
1.105 |
- |
- |
- |
149.8 |
- |
62.9 |
- |
- |
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 |
|||
60 |
1.8071 |
1017.6 |
0.01104 |
273.64 |
406.06 |
1.2385 |
1.6360 |
1.481 |
1.147 |
- |
- |
- |
- |
- |
60.8 |
- |
- |
65 |
2.0129 |
993.6 |
0.00974 |
280.68 |
407.15 |
1.2589 |
1.6329 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
70 |
2.2355 |
967.8 |
0.00859 |
287.93 |
407.98 |
1.2795 |
1.6293 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
75 |
2.4760 |
939.9 |
0.00756 |
295.44 |
408.50 |
1.3004 |
1.6252 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
80 |
2.7357 |
909.2 |
0.00663 |
303.29 |
408.63 |
1.3220 |
1.6202 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
85 |
3.0157 |
874.7 |
0.00578 |
311.58 |
408.23 |
1.3443 |
1.6141 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
90 |
3.3180 |
835.0 |
0.00499 |
320.50 |
407.07 |
1.3679 |
1.6063 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
95 |
3.6446 |
786.6 |
0.00424 |
330.48 |
404.73 |
1.3938 |
1.5955 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
100 |
3.9986 |
721.7 |
0.00347 |
342.64 |
400.12 |
1.4248 |
1.5788 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
105 |
4.3850 |
589.0 |
0.00241 |
364.72 |
386.47 |
1.4791 |
1.5367 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
105.6 |
4.426 |
498 |
0.00201 |
378.6 |
378.6 |
1.512 |
1.512 |
inf. | inf. | inf. | 0 |
0 |
- |
- |
inf. | inf. | 0.00 |