Document x6zbkYE76J3evqZeREpwGZNg

Heating Ventilating Air Conditioning Guide 1952 Radiator, radiators (con tinued) panel, 6 ratings, 530 recessed, 7, 539 tube, 530 types of, 530 warm air, 370 Railway air conditioning, 997 . air cleaning, 998 air distribution, 998 heating, 997 humidity control, 1000 refrigeration, 998 summer systems, 998 temperature control, 1000 ventilation, 999 winter systems, 997 Reciprocating compressors, 813 Recooling, 629 Rectangular duct equivalents, 673 Reducing valves, 494, 622 Reflective insulation, 170, 180 Refrigerant, refrigerants, 8, 793 dichlorodifluoromethane, 793, 795 feeds, 771, 772 monochlorodifluordmethane, 793, 797 monofluorotrichloromethane, 793, 798 pipe size, 821 ,, water, 805, 809 Refrigeration, 791, 998, 1002, 1009 absorption system, 807 air cycle, 804 ammonia, 822 basic concepts, 791 complex cycles, 803 compressors, 813-816 condensers (see Condensers). 816 control, 818 coolers. 817 definitions, 791 discharge pressure, 801 equipment selection, 813 evaporators, 817 expansion valves, 819 float valves, 819 heat pump, 811 ice systems, 809 load. 257 mechanical, 791, 993, 1002,1009 piping, 821 reverse cycle, 792, 811 ship, 1009 simple cycle, 804 steam jet-, 805 subcooling, 802 suction, 801 superheating, 802 symbols for drawing, 17 theory, 791 ton of, 8, 791 types of compressors (see Com pressors), 813-816 vapor compression cycle, 796 water jacket, 801 Regain, 944 control of, 944 hygroscopic materials, 946 static, 690 Register, registers, (see Grilles), 439, 441, 450, 646 air supply noises, 686, 885 R eglster, registers (continued) mechanical furnace systems, 450 noises, 885 selection, 439, 451, 658 Reheat, 632, 640 Reheating, 632, 640 Relative humidity, 5,25; 52,1049 measurement of, 1049 Repulsion induction motors, 858, 863 Residence control systems, 842 air conditioning, 844 coal-fired heating plant, 842 domestic hot water supply, 1031 cooling methods, 466 gravity furnace systems, 439 heat loss problems, 255 hot water heating eystem,'511 mechanical furnace system, 449 steam beating system, 469 Resistance thermometers, 1040 Resistors, 893 Return grille. 441, 888 mains. 8, 469, 489, 491, 513-516 openings, 441, 664 Reverse cycle refrigeration, 792, 811 Reversed return system, 8, 518 Roof, roofs heat flow through, 173,193-196, 275-279 time lag of solar radiation, 274 ventilators, 225 Room air motion, 647, 654 control, 843 cross transmissionfnoise, 888 latent heat, 633 noise level, 875 operating, 138 sensible neat, 633 Rotary dryer, 990 Rotary oil burner, 362 Run-around system, 640 s Sanitary ventilation,^132 Saturated air, 1, 25, 29 Saturation, 8 degree of, 8, 29 pressure, 7 Scale, 895 ' cause and prevention, 901 closed systems, 907 heating systems, 908 high temperature, 908 open systems, 908 Secondary air, 324, 341, 371 Sectional boiler, 378 Sensible cooling, 639 Sensible heat. 257, 266, 303-309, 313, 633, 644 factor, 633 gain, 257, 303-309 loss, 248 Sheet metal gages, 697 Shipbeating, ventilation, air conditioning, 1006 air conditioning, 1006 design conditions, 1007 XX Ship heating, ventilation, air conditioning (continued) factors affecting design, 1006 general consideration,1006 heating, 1007 insulation of hull, 1006 ducts, 1007 refrigeration, 1009 requirements for space, 1009 bakery, 1008 bath, 1008 cargo, 2009 food handling, 1008 Siley, 1008 undry, 1008 living, 1008 machinery, 1007 shower, 1008 storeroom, 1009 toilets, 1008 washroom. 1008 systems, typical, 1010 ventilating, 1007 Silica gel, 831 Silicon dioxide, 831 Single phase motors, 862 Slime, 909 ` cause and prevention, 909,911 formers, 909 Slotted outlets, 649 Sludge, 901 cause and prevention, 905 Smoke, 8, 154, 322 abatement, 154, 322 density measurements, 1037 Smokeless arch, 8 Smokeless combustion, 322 Solar constant, 8, 266 Split systems, 8 Splitter dampers, 662 Spray apparatus, 741 booths, 962 cooling, 745 cooling ponds, 749 cooling towers, 751 dehumidifier, 633, 745 distribution, 747 dryer, 991 equipment, 741 generation, 741 humidifiers, 743, 747, 748 unit air conditioner, 575 Spread, air distribution, 647, 652 Square foot of heating surface, 8 Squeeze dampers, 662 Squirrel-cage induction motor, Solar heat, 266 absorbed by glass, 286 altitude, 266 calculation tables, 267-282, 286 through shaded windows, 297, 298 time lag, 274 transmission of, 278 through glass, 288 through roofs, 280 through walls, 282 Solar heat gain, 286 basic principles, 286 design for figured rolled glass, 291 ' design for flat glass, 289 design for glass block, 292 deviation from design, 297 shading glass, 297 Solar radiation. 266 absorption of. 268 magnitude, 266 Solar water heater,.1033 Sol-Air temperature, 271, 273 Index to Technical Data Section Soot, 151, 322, 340 Sorbents, 829 absorbents, 829, 830 adsorbents, 829 Sound (m Noise), 871 absorbers, 874 apparatus for measuring, 872 attenuation, 874, 879 control, 871, 889 cross transmission between rooms, 888 general problem, 872 duct absorbers, 880 intensity, 871 isolation, 576 levels, 645, 872 measurement, 872 outlet absorbers, 885 pressure, 871 unit, 871 Space heaters, 398 design, 399 Stack, stacks, 213, 226, 403, 439, 442 height, 8, 229 wall, 439, 442 smoke, 403 Standard, standards, 1057 air distribution, 645 atmosphere, 63 Standard air, 1 Static electricity elimination, 948 - pressure, 7. 683, 706-115 regain, 690 Steady flow, energy equation, Steam, 8 coils, 769, 776. distribution piping, 479, 619 estimating consumption, 435, 627 flow, 481, 482- flow measurement, 78, 625 heated equipment, 304 heating systems, 469 condensate return, 469 connections to units, 508 control valves, 509 corrosion, 908 drips, 505 flash leg, 506 gravity one-pipe air-vent. gravity return, 469 high pressure steam, 473 low pressure steam, 473 mechanical return, 469 one-pipe, 470 orifice, 478 piping for, 479 sub-atmospheric, 477 two-pipe, 472 vacuum, 476 vapor, 474 let type of compressor, 805 meters, 78, 625 panel heating, 541 pipe capacities, 482,485-491 properties, 32,49 rates, 627 reducing valves, 494 requirements, 435, 627 runout, 471 superheated, 8 tables, 32, 49 traps, 500 valves, 509 Steel boilers, 378 Sterilization of air, 132 Stoker, stokers, 353 . classification of, 353 Stoker, Stokers, (continued) combustion adjustments, 358 combustion process, 355 controls, 361 furnace design, 359 mechanical, 353 overfeed flat grate, 357 overfeed inclined grate, 355 sizing and ratings, 360 underfeed, 356 Sub-atmospheric systems, 477 Summer air conditioning sys tem. 257. 467, 629 Summer comfort, 127, 128 Superheated steam, 8 Supply mains, 8 Supply openings, 450, 646, 657, 885, 999 measurement of velocities, 1047 Supports, pipe, 591 Surface condensation, 199,.612 conductance, 3, 170,- 179 coefficients, 92,179, 610 external pipe, 605 heating, 9 extended, 9 temperature, 198,397, 549, 1039 Suspended unit heater, 556 Symbols, 12, 13, 14 air conditioning, 21 for drawings, 17 heating, 18 piping, 17 ventilating, 19 T Tables air changes, 218 air conditioning temperaturer. and humidities, 933 934944 aiT duct si2e, 442 air leakage, 214, 216, 217 air requirements, 113 air, volume of, 32 allowable concentration gases, vapors, 158 dust, fumes, ICO, 161 altitude, pressure and tem perature, 63 analytical solutions tor heat conduction, 107 anthracite size, 320 atmospheric gas, 905 atmospheric impurities, 153, 905 attenuation between grille and room, 881 data, lining board, 883 in straight ducts, 879 of branches, 880 of elbows, 880 of plate absorber, 884 azimuth angle, 266 black body radiation, 96 boiler ratings, 380, 381, 383 bonnet pressure, 463 building load factors, 438 calorific value, 318,319,329,334 capacity constants, unit heat ers, 559 capture velocities, 957 carbon dioxide maximum, 345 cast-iron boiler rating, 383 ceiling temperature, 242 chimney draft, 415 circular equivalents of rec tangular ducts, 674 classification of coals, 319 motors, 858 water, 902 Tables {continued) climatic conditions, 235, 261 coal analyses, 318 coal classification, 319 codes, 1057 coil capacity balance, 779 combustible elements and compounds, 342 combustion rates, 386 comfort ranges, 123 condenser design data, 764 conductance, 93,170,180 air space, 170,180 conduction problem solution, 101, 107 ., conductivity materials, 91, 170, 175, 176, 180 convection conductances, 93 convector correction factors, 536. . conversion equations, 15 conveying velocity, 963 cooling coil arrangements, 778 cooling tower pipe size, 1022_ copper elbowequivalents, 513 copper tube capacity, 516 copper tube surface, 605 correction factor, temperature, 434, 534, 559 corrosion resistance, 967 cost of air conditioning, 924 decibel scale, 873 . . degree-days for cities, 429 design dry- and wet-bulb tem peratures, 235, 258, 259, 279,924,1007 design humidity, 924-944 dew-point, fuels, 350 draft in chimneys, 415 (haft requirements erf appli ances, 415. duct attenuation, 879 duct combinations, 451, 452 duct joints, 696 . duct sizing, 442, 443, 445, 446, 454, 459. 460. 958, 960 duct velocity 686 duct weight, 697. 698, 965 dust concentration, 155 elbow attenuation 880 __ elbow equivalent , 513, 968, 1020 emissivity factors, 5 end reflection, 884 . environmental conditions, limits, 118 equivalent flue sizes, 417 . equivalent length of fittings 443. 456. 485, 1021 equivalent temperature dif ferentials, 280, 282 . exhaust pipes for machines, 958,960 exhaust velocities, 957 expansion tank sizes, 526 fan outlet velocity, 718 fan speed, 718 fitting allowance, 443, 456, 485 fitting dimensions, 593-596 fixture flow, 1014 fixture units, 1014 flammability of gases and vapors, 162 flanged fittings surface, 606 flue gas dewpoint, 350 free convection, 94 friction loss, pipe, 513-516, 1016-1018 .. friction valves and fittingB, 443, 456, 485, 1021 fuel consumption, 434, 435 fuel oil properties, 328 fumes, concentration, 160 gas piping capacity, 372 gaseous fuel properties, 334 glaaa absorptance, 288 glass transmittance, 288 graphical symbols, 17 neat absorbed, cooling water, 759