Document bBejvQzxqBrOnGK9zBRZJq4kg

690 Chapter 39 1948' Guide Table 5. Properties of Carbon Dioxide Sat. Temp. F Abs. Press, Lb peb SqIn. Volume Liquid Vapor Enthalpy and Entbopt,Taken Fbom --40 F Enthalpy Entropy 50 F Superheat 100 F Superheat Liquid Vapor Liquid Vapor Enthalpy Entropy Enthalpy Entropy 0 305.5 0.01570 0.29040 2 315.9 0.01579 0.28030 4 326.5 0.01588 0.27070 5 332.0 0.01592 0.26610 6 . 337.4 0.01596 0.26140 18.8 19.8 20.8 21.3 21.8 8 348.7 0.016G5 0.25260' 22.9 10 360.2 0.01614 0.24370 24.0 12 371.9 0.01623 0.23540 25.0 14 383.9 0.01632 0.22740 26.1 16 396.2 0.01642 0.21970 27.2 > 18 20 '22 24 26 408.9 421.8 434.0 448.4 462.2 0.01652 0.01663 0.01673 0.01684 0.01695 0.21210 0.20490 0.19790 0.19120,. 0.18460 28.3 29.4 30.5 31.7 32.9 28 476.3 0.01707 0.17830 34.1 30 490.8 0.01719 0.17220 35.4 32 505.5 0.01731 0.16630 36.7 34 522.6 0.01744 0.16030 37.9 36 536.0 0.01759 0.15500 39.1 38 551.7 0.01773 0.14960 39 559.7 0.01780 0.14700 - 40 . 567.8 0.01787 0.14440 41 576.0 0.01794 0.14185 42 584.3 0.01801 0.13930 40.4 41.0 41.7 42.3 42.9 44 46 48 . 50 52 601.1 618.2 635.7 653.6 671.9 0.01817 0.01834 0.01851 0.01868 0.01887 0.13440 0.12970 0.12500 0.12050 0.11610 44.3 45.6 47.0 48.4 49.8 54 690.6 0.01906 0.11170 51.2 56 709.5 0.01927 0.10750 52.6 58 728.8 0.01948 0.10340 54.0 60 748.6 0.01970 0.09940 55.5 62 769.0 0.01995 0.09545 57.0 64 789.4 0.02020 0.09180 58.6 66 810.3 0.02048 0.08800 60.2 68 831.6 0.02079 0.08422 61.9 70 853.4 0.02112 0.08040 63.7 72 875.8 0.02152 0.07654 65.5 74 76 78 80 . 82 898.2 921.3 944.8 968.7 993.0 0.02192 0.02242 0.02300 0.02370 0.02456 0.07269 0.06875 0.06473 0.06064 0.05648 67.3 69.4 71.6 . 73.9 76.4 84 1017.7 0.02553 86 1043.0 0.02686 87.8 1069.9 0.03454 0.05223 0.04789 0.03454 79.4 83.3 97.0 138.9 138.8 138.8 . 138.8 138.7 0.0418 0.0440 0.0461 0.0472 0.0483 0.3024 0.3014 0.3005 0.3000 0.2994 153.7 153.7 . 1S3.7 153.7 .153.7 138.7 138.7 138.6 138.6 138.5 .0.0504 0.0526 0.0548 0.0571 0.0593 0.2982 0.2970 0.2958 0.2946 0.2933 *153.7 153.7 153.7 153.7 153.7 138.4 138.3 138.2 138.1 138.0 0.0616 0.0638 0.0662 0.0686 0.0710 0.2921 0.2909 0.2897 0.2885 0.2873 153.7 153.7 153.7 153.7 153.7 137.9 137.8 137.7 137.4 137.2 0.0734 0.0758 0.0781 0.0804 0.0828 0.2861 0.2849 0.2834 0.2820 0.2805 153.7 153.7 153.7 153.7 153.7 136.9 136.8 136.7 136.5 136.3 0.0851 0.0862 0.0874 0.0887 0.0899 0.2791 0.2783 0.2776 0.2768 0.2761 153.7 153.7 153.7 153.7 153.7 136.1 135.7 135.4 135.0 134.5 0.0924 0.0950 0.097S 0.1000 0.1027 0.2745 0.2730 0.2714 0.2699 0.2681 153.7 153.7 ,153.7 153.7 153.7 133.9 133.4 132.7. 132.1 131.3 0.1054 0.1081 0.1108 0.1135 0.1164 0.2663 0.2644 0.2626 0.2608 0.2584 153.7 153.5 153.7 153.7 153.7 130.6 129.7 128.7 127.5 126.0 0.1194 0.1223 0.1253 . 0.1282 0.1321 0.2560 0.2535 0.2511 0.2487 0.2450 153.7 153.7 153.7 153.7 153.7 124.5 122.8 120.9 118.7 116.6 0.1360 0.1398 0.1437 0.1476 0.1S78 0.2414 0.2377 0.2341 0.2304 0.2195 153.7 153.7 1S3.7 153.7 153.7 113.9 110.4 97.0 0.1679 01781 0.1880 0.2087 0.1978 0.1880 153.7 153.7 153.7 0.3342 0.3303 0.3318 0.3312 0.3306 167.5 167.6 167.7 167.7 167.8 0.3612 0.3600 0.3588 0.3582 0.3576 0.3293 0.3281 0.3270 0.3259 0.3249 167.9 168.0 168.1 168.2 168J 0.3563 0.3550 0.3538 0.3526 0.3513 0.3238 0.3227 0.3214 0.3202 0.3189 168.5 168.6 168.7 168.8 168.9 0.3501 0.3489 0.3479 0.3470 0.3460 0.3177 0.3164 0.3158 0.3151 0.3145 169.0 169.1 169.2 169J 169.4 0.3451 0.3441 0.3431 0.3421 0.3411 0.3138 0.3135 0.3132 0.3127 0.3122 169.5 169.5 169.6 196.6 169.7 0.3401 0.3396 0.3391 0.3386 0.3381 0.3112 0J101 0.3091 0.3081 0.3069 169.8 169.9 170.0 170.1 170.2 0.3371 0.3362 0.3352 0.3342 0.3333 0.3057 0.3046 0.3034 0.3022 0.3012 170.3 170.5 170.6 170.7 170.8 0.3324 0.3315 0.3306 0.3297 0.3289 0.3002 0.2991 0.2981 0.2971 0.2962 170.9 171.0 171.1 171.2 171.3 0.3281 0.3273 0.3265 03257 0.3250 0.2953 0.2945 0.2936 0.2927 0.2920 171.4 171.5 .171.6 171.7 173.8 0.3242 0.3235 .0.3227 0.3220 0.3215 0.2914 0.2907 0.2901 176.0 178.2 180.1 0.3209 0.3204 0.3199 for all practical, purposes the specific volume and the enthalpy of any sub-cooled refrigerant can be taken as equal to the values read from the tables for a saturated liquid at the same temperature. Thus if F-12 at 121 psia and 40 F is passing through a pipe, its volume and enthalpy can be determined from Table 1 as 0.0116 cu ft per pound and 17.0 Btu per pound. Frequently it is necessary to determine the properties of a wet vapor or of a mixture of liquid with some added vapor, such as is found at discharge from an expansion valve. This can be done from the tables by noting that the specific enthalpy of the mixture must be equal to that of the saturated liquid plus a fraction of the latent heat of vaporiza tion equal to the fraction of refrigerant which is present in vapor form. Refrigeration Table 6. Properties of Monofluorotrichlorometbane (F-ll) 691 Sat. Temp. F Abs. Press. Lb peb SqIn. VOLUMB liquid Vapor Enthalpy and Entropy Taken From --40 F Enthalpy liquid Vapor Entropy 25 F Superheat 50 F Superheat liquid Vapor Enthalpy Entropy Enthalpy Entropy 0 5 10 15 20 25 2.59 0.01020 13.700 2.96 0.01024 12.100 3.38 0.01028 10.700 3.85 0.01032 9.530 4.36 0.01036 8.490 4.94 0.01040 7.580 7.81 8.81 9.82 10.80 11.90 12.90 90.4 0.0178 0.1975 91.2 9.0200 0.1974 92.0 0.0222 0.1973 92.8 0.0243 0.1971 93.7 0.0264 0.1970 94.5 0.0286 0.1969 93.9 0.2049 97.4 0.2120 94.7 0.2047 98.2 0.2117 95.5 0.2045 99.0 0.2114 96.3 0.2043 99.8 0.2111 97.2 0.2041 100.7 0.2109 98.0 0.2039 101.5 0.2107 30 35 40 45 50 5.57 0.01045 6.27 0.01049 7.03 0.01053 7.88 0.01057 8.79 0.01062 6.770 6.080 5.460 4.920 4.440 13.90 14.90 16.00 17.00 18.10 95.3 0.0307 0.1969 98.8 0.2038 102.3 0.2105 96.1 0.0328 0.1968 99.6 0.2037 103.1 0.2103 96.8 0.0349 0.1968 100.3 0.2036 103.8 0.2101 97.6 0.0370 0.1967 101.1 0.2035 104.6 0.2099 98.4 0.0391 0.1967 10119 0.2034 105.4 0.2098 55 60 65 70 75 9.80 0.01066 10.90 0.01071 12.10 0.01076 13.40 0.01081 14.80 0.01086 4.020 3.640 3.300 3.000 2.740 19.10 20.20 21.30 22.40 23.50 99.2 0.0412 0.1967 102.7 0.2033 106.2 0.2097 100.0 0.0432 0.1967 103.5 0.2033 107.0 0.2096 100.8 0.0453 0.1967 104.3 0.2032 107.8 0.2094 101.5 0.0473 0.1967 105.0 0.2032 108.5 0.2093 102.2 0.0493 0.1967 105.7 0.2031 109.2 0.2092 80 85 90 95 100 105 16.30 0.01091 17.90 0.01096 19.70 0.01101 21.60 0.01106 23.60 0.01111 25.90 0.01116 2.500 2.280 2.090 1.918 1.761 1.620 24.50 102.9 0.0513 0.1966 106.4 0.2030 109.9 0.2090 25.60 103.6 0.0533 0.1966 107.1 0.2029 110.6 0.2089 26.70 104.4 0.0553 0.1966 107.9 0.2028 111.4 0.2088 27.80 105.1 0.0573 0.1966 108.6 0.2028 112.1 0.2087 28.90 105.7 0.0593 0.1965 109.2 0.2027 112.7 0.2085 30.10 106.4 0.0613 0.1965 109.9 0.2026 113.4 0.2084 Table 7. Properties of Water Sat. Temp. F Abb. Press. Lb per SqIn. Volume Liquid Vapor Enthalpy and Entropy Taken From +32 F Enthalpy liquid Vapor Entropy 50 F Superheat 100 F Superheat liquid Vapor Enthalpy Entropy Enthalpy Entropy 32 0.0887 0.01602 3296.0 0.00 1073.0 0.0000 2.1826 1096.9 2.2277 1120.8 2.2688 35 0.1000 0.01602 2941.0 3.02 1074.4 0.0062 2.1724 1098.3 2.2172 1122.2 2.2581 40 0.1217 0.01602 2441.0 8.05 1076.8 0.0163 2.1555 1100.6 2.2000 1124.5 2.2406 45 0.1475 0.01602 2034.0 13.07 1079.2 0.0262 2.1390 1102.9 2.1832 1126.7 2.2234 50 0.1780 0:01602 1702.0 18.08 1081.5 0.0361 2.1230 1105.2 2.1667 1129.0 2.2066 . 55 60 65 70 75 0.2140 0.01603 1430.0 0.2561 0.01603 1206.0 0.3054 0.01604 1021.0 0.3628 0.01605 868.0 0.4295 0.01606 740.0 23.08 1083.9 0.0459 2.1073 1107.5 2.1506 1131.3 2.1902 28.08 1086.2 0.0556 2.0920 1109.8 2.1349 1133.5 2.1742 33.08 1088.6 0.0652 2.0771 1112.2 2.1196 1135.8 2.1585 38.07 1090.9 0.0746 2.0625 1114.5 2.1046 1138.1 2.1432 43.06 1093.2 0.0840 2.0483 1116.7 2.0900 1140.3 2.1283 80 0.507 0.01607 632.9 48.05 1095.5 0.0933 2.0344 1119.0 2.0758 1142.5 2.1138 85 0.596 0.01609 543.3 53.04 1097.8 0.1025 2.0208 1121.2 2.0619 1144.7 2.0996 90 0.698 0.01610 467.9 58.03 1100.0 0.1116 2.0075 1123.4 2.0483 1146.8 2.0857 95 0.815 0.01612 404.2 63.01 1102.3 0.1206 1.9946 1125.6 2.0350 1148.9 2.0721 100 0.949 0.01613 350.3 68.00 1104.6 0.1296 1.9819 1127.9 2.0220 1151.1 2.0588 105 1.101 0.01615 304.4 72.98 1106.8 0.1384 1.9695 1130.2 2.0093 1153.2 2.0458