Document gDor6yGnX5YZ9w240DLB1dQbJ

HEATINC VENTILATING AIR CONDITIONING CUIDE 1940 Temperature Deo F Table 1. Properties of Dry Air0 Barometric Pressure 29.921 In. of Hg. Weight Pounds per Co Ft Ratio op Volume to Volume at 70 F Bto Absorbed bt One Cu Ft Dry Air per Deo F Cu Ft Drt Air Warmed Onb Deo per Btu 0 10 20 30 40 SO 60 70 80 90 100 110 120 130 140 150 160 180 200 220 240 260 280 300 350 400 450 500 550 600 700 800 900 1000 0.08633 0.08449 0.08273 0.08104 0.07942 0.07785 0.07636 0.07492 0.07353 0.07219 0.07090 0.06966 0.06845 0.06729 0.06617 0.06509 0.06403 0.06203 0.06015 0.05838 0.05671 0.05514 0.05365 0.05223 0.04901 0.04615 0.04362 0.04135 0.03930 0.03744 0.03422 0.03150 0.02911 0.02718 . 0.8678 0.8867 0.9056 0.9245 0.9433 0.9624 0.9811 1.0000 1.0189 1.0378 1.0567 1.0755 1.0946 1.1133 1.1322 1.1510 1.1701 1.2078 1.2456 1.2832 1.3211 1.3587 1.3965 1.4344 1.5287 1.6234 1.7176 1.8119 1.9064 2.0011 2.1893 2.3784 2.5737 2.7564 0.02077 0.02030 0.01986 0.01944 0.01905 0.01868 0.01832 0.01798 0.01765 0.01733 . 0.01702 0.01672 0.01643 0.01616 0.01589 0.01563 0.01538 0.01490 0.01446 0.01403 0.01364 0.01326 0.01291 0.01257 . 0.01181 0.01114 0.01054 0.01001 0.00953 0.00908 0.00833 0.00769 0.00713 0.00668 48.15 49.26 50.35 51.44 52.49 53.36 54.44 . 55.62 56.66 57.70 58.75 59.81 ' 60.86 61.88 62.93 63.98 65.02 67.11 69.24 71.27 73.31 75.41 77.46 70.55 84.67 89.67 94.87 99.01 104.93 110.13 120.05 130.04 140.25 149.70 Compiled by W. H. Sevems, based on the instantaneous specific heats of air. The values for the heats and for the cubic feet warmed one degree are for the temperatures stated and are not true over a tempera ture range of more than one degree above or below the temperatures stated. 4 :! i 1 i Q CHAPTER 1. AIR, WATER AND STEAM Table 2. Properties of Saturated AiRa Weights of Air, Vapor and Saturated Mixture of Air and Vapor at 29.921 In. of Hg. Temp Deo F Weight in a Cubic Foot op Mixtube Weight of Dry Air Pounds Weight of Vapor Pounds Total Weight of Mixture Pounds Btu Absorbed Cubic Foot Sat. Am peb Deo F Cubic Feet Sat. Am Warmed One Deo ?ea Btu Specific Heat Btu peb Pound op Mixture 0 0.08622 10 0.08431 20 0.08244 30 0.08060 40 0.07876 50 0.07692 60 0.07503 70 0.07307 80 0.07099 90 0.06877 100 0.06634 110 0.06361 120 0.06057 130 0.05712 140 0.05317 150 0.04863 160 . 0.04339 170 0.03733. 180 0.03033 190 0.02228 200 0.01298 210 0.00230 212 0.00000 0.000068 0.000111 0.000177 0.000278 0.000409 0.000587 0.000828 0.001151 0.001578 0.002134 0.002851 0.003762 0.004912 0.006344 0.008116 0.010284 0.012919 0.016092 0.019888 0.024384 0.029700 0.035932 0.037286 0.08629 0.08442 0.08262 0.08088 0.07917 0.07751 0.07586 0.07422 0.07257 0.07090 . 0.06919 0.06737 0.06548 0.06346 0.06129 0.05891 0.05631 0.05342 0.05022 0.04666 0.04268 0.03616 0.03729 0.02078 0.02031 0.01987 0.01946 0.01908 0.01872 0.01838 0.01805 0.01775 0.01747 0.01721 0.01696 0.01675 0.01657 0.01642 0.01630 0.01624 0.01621 0.01624 0.01633 0.01649 0.01672 0.01818 48.12 49.24 50.33 51.39 52.41 53.42 54.41 55.40 56.34 57.24 58.11 58.96 59.70 60.35 60.91 61.35 61.58 61.6961.58 61.24 60.64 59.81 55.01 0.2408 0.2406 0.2405 0.2406 0.2410 0.2415 0.2423 0.2432 0.2446 0.2464 0.2487 0.2517 0.2558 0.2611 0.2679 0.2767 0.2884 0.3034 0.3234 0.3500 0.3864 0.4624 0.4875 Compiled by W. H. Sevems, based on the instantaneous specific heats of air. Table 3. Specific Heats of Dry Air8 Constant Barometric Pressure of 29,921 In. of Hg. Temperature Deo F Instantaneous or True Specific Heat Temperature Range Deo F Mean Specific Heat -301.0 -108.4 32.0 212.0 392.0 752.0 1112.0 0.2520 0.2430 0.2399 0.2403 0.2413 0.2430 0.2470 32 to 212 32 to 392 32 to 752 32 to 1112 0.2401 0.2411 0.2420 0.2430 Compiled by W. H. Sevems. based on data given in the International Critical Tables. *5