Document gzOqndyZDRNNBOm0nKXBp24a

Heating Ventilating Air Conditioning Guide 1938 Table 1. Properties of Ammonia Sat. Temp. F AB8 Press. Lb per Sq In. Volume Liquid Vapor -40 FHeat Content and Entropt Taken From Heat Content Entropy 100 F Superheat 200 F Superheat Liquid Vapor Liquid Vapor Ht. Ct. Entropj Ht. Ct. Entropy 0 2 4 30.42 0.0241S 9.116 31.92 0.02424 8.714 33.42 0.0243C 8.333 42.9 611.8 0.0973 1.3352 666.8 1.4439 720.3 1.5317 45.1 612. t 0.1022 1.3312 667.C 1.4400 721.2 1.5277 47.2 613.( 0.1069 1.327; 668.4 1.4360 722.2 1.5236 5 6 8 10 12 34.27 0.02432 35.09 0.02435 36.77 0.02440 38.51 0.02446 40.31 0.02451 8.150 7.971 7.629 7.304 6.996 48.3 49.4 51.6 53.8 56.( 613.; 0.1092 1.3253 613.6 0.1115 1.3234 614.- 0.1162 1.3195 614.9 0.1208 1.3157 615.5 0.12& 1.3118 668.8 1.4340 669.3 1.4321 670.1 1.4281 670.9 1.4242 671.7 1.4205 722. ( 1.5216 723.1 1.5196 724.1 1.5155 725.0 1.5115 725.9 1.5077 14 42.18 0.02457 6.703 58.2 616.1 0.1300 1.3081 672.5 1.4168 726.8 1.5039 16 18 44.12 0.02462 6.425 46.13 0.02468 6.161 60.3 616.6 0.1346 1.3043 673.4 1.4130 727.8 1.5001 62.5 617.2 0.1392 1.3006 674.2 1.4093 728.7 1.4963 20 22 48.21 0.02474 5.910 50.36 0.02479 5.671 64.7 617.8 0.1437 1.2969 675.0 1.4056 729.6 1.4925 66.9 618.3 0.1483 1.2933 675.8 1.4021 730.5 1.4889 24 52.59 0.02485 5.443 69.1 618.9 0.1528 1.2897 676.6 1.3985 731.4 1.4853 26 28 30 32 34 36 38 39 54.90 0.02491 57.28 0.02497 59.74 0.02503 62.29 0.02508 64.91 0.02514 67.63 0.02521 70.43 0.02527 71.87 0.02530 5.227 5.021 4.825 4.637 4.459 4.289 4.126 4.048 71.3 619.4 0.1573 1.2861 677.3 1.3950 732.4 1.4816 73.5 619.9 0.1618 1.2825 678.1 1.3914 733.3 1.4780 - 75.7 620.5 0.1663 1.2790 678.9 1.3879 734.2 1.4744 77.9 621.0 0.1708 1.2755 679.7 1.3846 735.1 1.4710 80.1 621.5 0.1753 1.2721 680.4 1.3812 736.0 1.4676 82.3 622.0 0.1797 1.2686 681.2 1.3779 736.8 1.4643 84.6 "622.5 0.1841 1.2652 681.9 1.3745 737.7 1.4609 85.7 622.7 0.1863 1.2635 682.3 1.3729 738.2 1.4592 40 73.32 0.02533 3.971 41 74.80 0.02536 3.897 42 . 76.31 0.02539 3.823 86.8 623.0 0.1885 1.2618 682.7 1.3712 '738.6 1.4575 87.9 623.2 0.1908 1.2602 683.1 1.3696 739.0 1.4559 89.0 623.4 0.1930 1.2585 683.4 1.3680 739.5 1.4542 44 79.38 0.02545 3.682 91.2 623.9 0.1974 1.2552 684.2 1.3648 740.4 1.4510 46 82.55 0.02551 3.547 93.5 624.4 0.2018 1.2519 684.9 1.3616 741.3 1.4477 48 85.82 0.02558 3.418 95.7 624.8 0.2062 1.2486 685.6 1.3584 742.2 1.4445 50 89.19 0.02564 3.294 97.9 625.2 0.2105 1.2453 686.4 1.3552 743.1 1.4412 52 92.66 0.02571 3.176 100.2 625.7 0.2149 1.2421 687.1 1.3521 744.0 1.4382 54 96.23 0.02577 3.063 102.4 626.1 0.2192 1.2389 687.8 1.3491 744.8 1.4351 56 99.91 0.02584 2.954 104.7 626.5 0.2236 1.2357 688.5 1.3460 745.7 1.4321 58 103.7 0.02590 2.851 106.9 626.9 0.2279 1.2325 689.2 1.3430 746.5 1.4290 60 62 64 66 68 70 72 74 107.6 111.6 115.7 120.0 124.3 128.8 133.4 138.1 0.02597 0.02604 0.02611 0.02618 0.02625 0.02632 0.02639 0.02646 2.751 2.656 2.565 2.477 2.393 2.312 2.235 2.161 109.2 627.3 0.2322 1.2294 689.9 1.3399 747.4 1.4260 111.5 627.7 0.2365 1.2262 690.6 1.3370 748.2 1.4231 113.7 628.0 3.2408 1.2231 691.3 1.3341 749.1 1.4202 116.0 628.4 3.2451 1.2201 691.9 1.3312 749.9 1.4172 118.3 628.8 3.2494 1.2170 692.6 1.3283 750.8 1.4143 120.5 629.1 3.2537 1.2140 693.3 1.3254 751.6 1.4114 122.8 629.4 0.2579 1.2110 694.0 1.3226 752.4 1.4086 125.1 629.8 3.2622 1.2080 694.6 1.3199 753.3 1.4059 76 143.0 0.02653 2.089 127.4 630.1 3.2664 1.2050 695.3 1.3171 754.1 1.4031 78 147.9 0.02661 2.021 129.7 630.4 0.2706 1.2020 695.9 1.3144 755.0 1.4004 80 82 153.0 0.02668 1.955 158.3 0.02675 1.892 132.0 630.7 3.2749 1.1991 696.6 1.3116 755.8 1.3976 134.3 631.0 0.2791 1.1962 697.2 1.3089 756.6 1.3949 84 163.7 0.02684 1.831 136.6 631.3 3.2833 1.1933 697.8 1.3063 757.4 113923 86 88 169.2 0.02691 1.772 174.8 0.02699 1.716 138.9 631.5 0.2875 1.1904 698.5 1.3040 758.3 1.3896 141.2 631.8 0.2917 1.1875 699.1 1.3010 759.1 1.3870 90 180.6 0.02707 1.661 143.5 632.0 3.2958 1.1846 699.7 1.2983 759.9 1.3843 92 94 186.6 0.02715 192.7 0.02723 1.609 1.559 145.8 632.2 3.3000 1.1818 700.3 1.2957 760.7 1.3818 148.2 632.5 3.3041 1.1789 700.9 1.2932 761.5 1.3793 96 198.9 0.02731 1.510 150.5 632.6 3.3083 1.1761 701.5 1.2906 762.2 1.3768 98 205.3 0.02739 1.464 152.9 632.9 3.3125 1.1733 702.1 1.2881 763.0 1.3743 100 211.9 0.02747 1.419 155.2 633.0 3.3166 1.1705 702.7 1.2855 763.8 1.3718 102 218.6 0.02756 1.375 157.6 633.2 3.3207 1.1677 703.3 1.2830 764.6 1.3693 36 Chapter 2. Refrigerants and Air Drying Agents Table 1. Properties of Ammonia--(Continued) Sat. Temp. F Abs Press. Lb per Sq In. Volume liquid Vapor -40 FHeat Content and Entropy Taken From - Heat Content liquid Vapor Entropy 100 F Superheat 200 F Superheat. liquid Vapor Ht. Ct. Entropy Ht. Ct. Entropy 104 225.4 0.02764 1.334 159.9 633.4 0.3248 1.1649 703.8 1.2805 765.3 1.3668 106 108 232.5 0.02773 239.7 0.02782 1.293 1.254 162.3 633.5 0.3289 1.1621 704.3 1.2780 766.1 1.3643 164.6 633.6 0.3330 1.1593 705.0 1.2755 766.9 1.3619 110 247.0 0.02790 1.217 167.0 633.7 0.3372 1.1566 705.5 1.2731 767.6 1.3596 112 254.5 0.02799 1.180 169.4 633.8 0.3413 1.1538 706.1 1.2708 768.3 1.3$73 114 262:2 0.02808 1.145 171.8 633.9 0.3453 1.1510 706.6 1.2684 769.1 1.3550 116 270.1 0.02817 1.112 174.2 634.0 0.3495 1.1483 707.2 1.2661 769.8 1.3527 118 278.2 0.02827 1.079 176.6 634.0 0.3535 1.1455 707.7 1.2636 770.5 1.3503 120 286.4 0.02836 1.047 179.0 634.0 0.3576 1.1427 708.2 1.2612 771.3 1.3479 122 294.8 0.02846 1.017 181.4 634.0 0.3618 1.1400 708.6 1.2587 772.0 1.3455 124 303.4 0.02855 0.987 183.9 634.0 0.3659 1.1372 709.1 1.2563 772.8 1.3431 126 312.2 0.02865 0.958 186.3 633.9 0.3700 1.1344 709.6 1.2538 773.5 1.3407 128 321.2 0.02875 0.931 188.8 633.9 0.3741 1.1316 710.0 1.2513 774.2 1.3383 chloride, water, and monofluorotrichloromethane (Fn), for each of which a table is presented. Each table gives the principal physical properties of the saturated substance, and all are arranged in uniform fashion. In each case columns are included which- give the heat content and entropy of the superheated vapor at two selected points. Tables 1, 2, 3 and 4 which include the refrigerants much used in reciprocating and rotary mechanical compression systems have a 2 F temperature interval. As water and Fn are much used in centrifugal compression systems the temperature interval in Tables 5 and 6 is 5 F. AIR DRYING AGENTS Moisture may be removed from air, thus accomplishing dehumidi fication, by the use of any one of a number of substances if the moist air and these substances are brought together under suitable circumstances. One class of these substances are solids at ordinary conditions and have the power of adsorbing the moisture from the air. Another class of air drying agents are liquids under ordinary conditions and absorb the mois ture from the air. Nearly all the drying agents in frequent commercial use in air conditioning installations are of one or the other of these two classes. Adsorbents These substances are characterized by a physical structure containing a great number of extremely small pores but still retaining sufficient mechanical strength to resist whatever wear and handling to which they are subjected. To be suitable for air drying purposes they must be widely available at economical cost, durable in use, stable in form and properties, and capable of withstanding the re-activation processes by which they are made ready for repeated use. They must also possess capacity for adsorbing and holding so sufficient a quantity of moisture that the dimensions of the beds necessary to accommodate them will be practical. 37