Pressure Fig. 8 Pressure-Enthalpy Diagram for Refrigerant 134a Licensed for single user. © 2009 ASHRAE, Inc. 30.16 2009 ASHRAE Handbook—Fundamentals (SI) Thermophysical Properties of Refrigerants 30.17 Refrigerant 134a (1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor Licensed for single user. © 2009 ASHRAE, Inc. Temp.,* °C –103.30a –100 –90 –80 –70 –60 –50 –40 –30 –28 –26.07b –26 –24 –22 –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 85 90 95 100 101.06c Enthalpy, Pres- Density, Volume, kJ/kg sure, kg/m3 m3/kg MPa Liquid Vapor Liquid Vapor 0.00039 0.00056 0.00152 0.00367 0.00798 0.01591 0.02945 0.05121 0.08438 0.09270 0.10133 0.10167 0.11130 0.12165 0.13273 0.14460 0.15728 0.17082 0.18524 0.20060 0.21693 0.23428 0.25268 0.27217 0.29280 0.31462 0.33766 0.36198 0.38761 0.41461 0.44301 0.47288 0.50425 0.53718 0.57171 0.60789 0.64578 0.68543 0.72688 0.77020 0.81543 0.86263 0.91185 0.96315 1.0166 1.0722 1.1301 1.1903 1.2529 1.3179 1.3854 1.4555 1.5282 1.6036 1.6818 1.7628 1.8467 1.9337 2.0237 2.1168 2.2132 2.3130 2.4161 2.5228 2.6332 2.9258 3.2442 3.5912 3.9724 4.0593 1591.1 35.4960 1582.4 25.1930 1555.8 9.7698 1529.0 4.2682 1501.9 2.0590 1474.3 1.0790 1446.3 0.60620 1417.7 0.36108 1388.4 0.22594 1382.4 0.20680 1376.7 0.19018 1376.5 0.18958 1370.4 0.17407 1364.4 0.16006 1358.3 0.14739 1352.1 0.13592 1345.9 0.12551 1339.7 0.11605 1333.4 0.10744 1327.1 0.09959 1320.8 0.09242 1314.3 0.08587 1307.9 0.07987 1301.4 0.07436 1294.8 0.06931 1288.1 0.06466 1281.4 0.06039 1274.7 0.05644 1267.9 0.05280 1261.0 0.04944 1254.0 0.04633 1246.9 0.04345 1239.8 0.04078 1232.6 0.03830 1225.3 0.03600 1218.0 0.03385 1210.5 0.03186 1202.9 0.03000 1195.2 0.02826 1187.5 0.02664 1179.6 0.02513 1171.6 0.02371 1163.4 0.02238 1155.1 0.02113 1146.7 0.01997 1138.2 0.01887 1129.5 0.01784 1120.6 0.01687 1111.5 0.01595 1102.3 0.01509 1092.9 0.01428 1083.2 0.01351 1073.4 0.01278 1063.2 0.01209 1052.9 0.01144 1042.2 0.01083 1031.2 0.01024 1020.0 0.00969 1008.3 0.00916 996.2 0.00865 983.8 0.00817 970.8 0.00771 957.3 0.00727 943.1 0.00685 928.2 0.00645 887.2 0.00550 837.8 0.00461 772.7 0.00374 651.2 0.00268 511.9 0.00195 *Temperatures on ITS-90 scale 71.46 75.36 87.23 99.16 111.20 123.36 135.67 148.14 160.79 163.34 165.81 165.90 168.47 171.05 173.64 176.23 178.83 181.44 184.07 186.70 189.34 191.99 194.65 197.32 200.00 202.69 205.40 208.11 210.84 213.58 216.33 219.09 221.87 224.66 227.47 230.29 233.12 235.97 238.84 241.72 244.62 247.54 250.48 253.43 256.41 259.41 262.43 265.47 268.53 271.62 274.74 277.89 281.06 284.27 287.50 290.78 294.09 297.44 300.84 304.28 307.78 311.33 314.94 318.63 322.39 332.22 342.93 355.25 373.30 389.64 334.94 336.85 342.76 348.83 355.02 361.31 367.65 374.00 380.32 381.57 382.78 382.82 384.07 385.32 386.55 387.79 389.02 390.24 391.46 392.66 393.87 395.06 396.25 397.43 398.60 399.77 400.92 402.06 403.20 404.32 405.43 406.53 407.61 408.69 409.75 410.79 411.82 412.84 413.84 414.82 415.78 416.72 417.65 418.55 419.43 420.28 421.11 421.92 422.69 423.44 424.15 424.83 425.47 426.07 426.63 427.14 427.61 428.02 428.36 428.65 428.86 429.00 429.04 428.98 428.81 427.76 425.42 420.67 407.68 389.64 Entropy, kJ/(kg·K) Specific Heat cp , kJ/(kg·K) Liquid Vapor 0.4126 0.4354 0.5020 0.5654 0.6262 0.6846 0.7410 0.7956 0.8486 0.8591 0.8690 0.8694 0.8798 0.8900 0.9002 0.9104 0.9205 0.9306 0.9407 0.9506 0.9606 0.9705 0.9804 0.9902 1.0000 1.0098 1.0195 1.0292 1.0388 1.0485 1.0581 1.0677 1.0772 1.0867 1.0962 1.1057 1.1152 1.1246 1.1341 1.1435 1.1529 1.1623 1.1717 1.1811 1.1905 1.1999 1.2092 1.2186 1.2280 1.2375 1.2469 1.2563 1.2658 1.2753 1.2848 1.2944 1.3040 1.3137 1.3234 1.3332 1.3430 1.3530 1.3631 1.3733 1.3836 1.4104 1.4390 1.4715 1.5188 1.5621 1.9639 1.184 0.585 1.9456 1.184 0.593 1.8972 1.189 0.617 1.8580 1.198 0.642 1.8264 1.210 0.667 1.8010 1.223 0.692 1.7806 1.238 0.720 1.7643 1.255 0.749 1.7515 1.273 0.781 1.7492 1.277 0.788 1.7472 1.281 0.794 1.7471 1.281 0.794 1.7451 1.285 0.801 1.7432 1.289 0.809 1.7413 1.293 0.816 1.7396 1.297 0.823 1.7379 1.302 0.831 1.7363 1.306 0.838 1.7348 1.311 0.846 1.7334 1.316 0.854 1.7320 1.320 0.863 1.7307 1.325 0.871 1.7294 1.330 0.880 1.7282 1.336 0.888 1.7271 1.341 0.897 1.7260 1.347 0.906 1.7250 1.352 0.916 1.7240 1.358 0.925 1.7230 1.364 0.935 1.7221 1.370 0.945 1.7212 1.377 0.956 1.7204 1.383 0.967 1.7196 1.390 0.978 1.7188 1.397 0.989 1.7180 1.405 1.001 1.7173 1.413 1.013 1.7166 1.421 1.025 1.7159 1.429 1.038 1.7152 1.437 1.052 1.7145 1.446 1.065 1.7138 1.456 1.080 1.7131 1.466 1.095 1.7124 1.476 1.111 1.7118 1.487 1.127 1.7111 1.498 1.145 1.7103 1.510 1.163 1.7096 1.523 1.182 1.7089 1.537 1.202 1.7081 1.551 1.223 1.7072 1.566 1.246 1.7064 1.582 1.270 1.7055 1.600 1.296 1.7045 1.618 1.324 1.7035 1.638 1.354 1.7024 1.660 1.387 1.7013 1.684 1.422 1.7000 1.710 1.461 1.6987 1.738 1.504 1.6972 1.769 1.552 1.6956 1.804 1.605 1.6939 1.843 1.665 1.6920 1.887 1.734 1.6899 1.938 1.812 1.6876 1.996 1.904 1.6850 2.065 2.012 1.6771 2.306 2.397 1.6662 2.756 3.121 1.6492 3.938 5.020 1.6109 17.59 25.35 1.5621 ∞ ∞ a Triple Liquid Vapor point Velocity of Sound, m/s cp /cv Vapor Liquid Vapor Thermal Cond., Surface mW/(m·K) Tension, Temp.,* Liquid Vapor Liquid Vapor mN/m °C 1.164 1.162 1.156 1.151 1.148 1.146 1.146 1.148 1.152 1.153 1.154 1.154 1.155 1.156 1.158 1.159 1.161 1.163 1.165 1.167 1.169 1.171 1.174 1.176 1.179 1.182 1.185 1.189 1.192 1.196 1.200 1.204 1.209 1.214 1.219 1.224 1.230 1.236 1.243 1.249 1.257 1.265 1.273 1.282 1.292 1.303 1.314 1.326 1.339 1.354 1.369 1.386 1.405 1.425 1.448 1.473 1.501 1.532 1.567 1.607 1.653 1.705 1.766 1.838 1.924 2.232 2.820 4.369 20.81 ∞ 2175.0 1893.0 1339.0 1018.0 809.2 663.1 555.1 472.2 406.4 394.9 384.2 383.8 373.1 362.9 353.0 343.5 334.3 325.4 316.9 308.6 300.6 292.9 285.4 278.1 271.1 264.3 257.6 251.2 244.9 238.8 232.9 227.1 221.5 216.0 210.7 205.5 200.4 195.4 190.5 185.8 181.1 176.6 172.1 167.7 163.4 159.2 155.1 151.0 147.0 143.1 139.2 135.4 131.6 127.9 124.2 120.6 117.0 113.5 109.9 106.4 102.9 99.5 96.0 92.5 89.0 80.2 70.9 60.4 45.1 — 1120 1103 1052 1002 952 903 855 807 760 751 742 742 732 723 714 705 695 686 677 668 658 649 640 631 622 612 603 594 585 576 566 557 548 539 530 520 511 502 493 483 474 465 455 446 436 427 418 408 399 389 379 370 360 350 340 331 321 311 301 290 280 269 259 248 237 207 176 141 101 0 126.8 127.9 131.0 134.0 136.8 139.4 141.7 143.6 145.2 145.4 145.7 145.7 145.9 146.1 146.3 146.4 146.6 146.7 146.8 146.9 146.9 147.0 147.0 147.0 146.9 146.9 146.8 146.7 146.5 146.4 146.2 146.0 145.7 145.5 145.1 144.8 144.5 144.1 143.6 143.2 142.7 142.1 141.6 141.0 140.3 139.7 138.9 138.2 137.4 136.6 135.7 134.7 133.8 132.7 131.7 130.5 129.4 128.1 126.8 125.5 124.0 122.6 121.0 119.4 117.7 113.1 107.9 101.9 94.0 0.0 b Normal Viscosity, μPa·s 6.46 6.60 7.03 7.46 7.89 8.30 8.72 9.12 9.52 9.60 9.68 9.68 9.77 9.85 9.92 10.01 10.09 10.17 10.25 10.33 10.41 10.49 10.57 10.65 10.73 10.81 10.90 10.98 11.06 11.15 11.23 11.32 11.40 11.49 11.58 11.67 11.76 11.85 11.95 12.04 12.14 12.24 12.34 12.44 12.55 12.65 12.76 12.88 13.00 13.12 13.24 13.37 13.51 13.65 13.79 13.95 14.11 14.28 14.46 14.65 14.85 15.07 15.30 15.56 15.84 16.67 17.81 19.61 24.21 — boiling point 145.2 143.2 137.3 131.5 126.0 120.7 115.6 110.6 105.8 104.8 103.9 103.9 102.9 102.0 101.1 100.1 99.2 98.3 97.4 96.5 95.6 94.7 93.8 92.9 92.0 91.1 90.2 89.4 88.5 87.6 86.7 85.9 85.0 84.1 83.3 82.4 81.6 80.7 79.8 79.0 78.1 77.3 76.4 75.6 74.7 73.9 73.0 72.1 71.3 70.4 69.6 68.7 67.8 67.0 66.1 65.2 64.3 63.4 62.6 61.7 60.8 59.9 59.0 58.1 57.2 54.9 52.8 51.7 59.9 ∞ 3.08 3.34 4.15 4.95 5.75 6.56 7.36 8.17 8.99 9.15 9.31 9.32 9.48 9.65 9.82 9.98 10.15 10.32 10.49 10.66 10.83 11.00 11.17 11.34 11.51 11.69 11.86 12.04 12.22 12.40 12.58 12.77 12.95 13.14 13.33 13.53 13.72 13.92 14.13 14.33 14.54 14.76 14.98 15.21 15.44 15.68 15.93 16.18 16.45 16.72 17.01 17.31 17.63 17.96 18.31 18.68 19.07 19.50 19.95 20.45 20.98 21.56 22.21 22.92 23.72 26.22 29.91 36.40 60.58 ∞ 28.07 –103.30 27.50 –100 25.79 –90 24.10 –80 22.44 –70 20.80 –60 19.18 –50 17.60 –40 16.04 –30 15.73 –28 15.44 –26.07 15.43 –26 15.12 –24 14.82 –22 14.51 –20 14.21 –18 13.91 –16 13.61 –14 13.32 –12 13.02 –10 12.72 –8 12.43 –6 12.14 –4 11.85 –2 11.56 0 11.27 2 10.99 4 10.70 6 10.42 8 10.14 10 9.86 12 9.58 14 9.30 16 9.03 18 8.76 20 8.48 22 8.21 24 7.95 26 7.68 28 7.42 30 7.15 32 6.89 34 6.64 36 6.38 38 6.13 40 5.88 42 5.63 44 5.38 46 5.13 48 4.89 50 4.65 52 4.41 54 4.18 56 3.95 58 3.72 60 3.49 62 3.27 64 3.05 66 2.83 68 2.61 70 2.40 72 2.20 74 1.99 76 1.80 78 1.60 80 1.14 85 0.71 90 0.33 95 0.04 100 0.00 101.06 c Critical point