Document 3Qxx9wE7q0mRoYdM6eM533mMJ

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V> :ir.V e;:- ;>/ is Heating Ventilating Air-Conditioning Guide "1953 Refrigeration (continued) reverse cycle, 808, 827 ship, 1041 ' simple cycle, 820 steam jet, 821 . subcooling, 818 suction, 817 superheating, 818 symbols for drawing, 17 theory, 807 ton of, 8, 807 types of compressors (see Com-. presaors), 829-832' vapor compression cycle, 814 water jacket, 818 .Regain, 970 control of, 970 . hygroscopic materials, ,972 static, 706 Register, registers, (see Grilles), 449, 451, 460, 662 air supply noises, 901 mechanical furnace systems, ' 460 noises, 901 selection, 449, 460, 674 Reheat, 648, 657 \ Relative humidity, 5,25,52,1081 measurement of, 1081 Relief valve, 538 Repulsion induction motors, 874, 879 Residence control systems, 858 air conditioning, 860 coal-fired heating plant, 858 domestic hot water supply, 1063 cooling methods, 477 gravity furnace systems, 449 heat loss problems, 261 hot water heating system, 521 mechanical furnace system, 459 steam heating system, 479 Resistance thermometers, 1072 Resistors, 909 Return grille, 451, 904 mains, 8, 479, 499, 501, 523-526 openings, 451, 680 Reverse cycle refrigeration, 808, * 827 Reversed return system, 8, 528 Roof, roofs . . heat flow through, 173,193-196, 276-282 time'lag of solar radiation, 2i ventilators, 230 Room air motion, 663, 670 - control, 859 coolers, 589, 595, 599 cross transmission noise, 904 'latent heat, 300 noise level, 891 operating, 138 i sensible heat, 300 Rotary diyer, 1022 Rotary oil burner, 364 Run-around system, 657 s Sanitary ventilation, 132 Saturated air, 1, 25, 29 Saturation, 8 degree of, 8, 29 pressure, 7 Scale, 927 cause and prevention, 927 .closed systems, 933 heating systems, 934 high temperature, 934 open systems, 934 Secondary air, 326, 343, 376 Sectional boiler, 384 Sensible cooling, 656 Sensible Heat, 263, 272, 302, 304. 660 . gain, 263, 2y7-307 loss, 254 Sheet metal gages, 713 Ship heating, ventilation, air conditioning, 1038 air conditioning, 1038 design conditions, 1039 factors affecting design, 1038 general consideration, 1038 ` heating, 1039 insulation of hull, 1038 ducts, 1039 . refrigeration, 1041 requirements for space, 1041 bakery, 1040 bath, 1040 cargo, 1041 t food handling, 1040 galley, 1040 laundry, 1040 living, 1040 machinery, 1039 shower, 1040 storeroom, 1041 toilets, 1040 washroom, 1040 systems, typical, 1042 ventilating, 1039 Silica gel, 847 Silicon dioxide, 847 Single phase motors, 878 Slime, 935 cause and prevention, 929. 935, 937 formers, 935 Slotted outlets, 665 Sludge, 927 cause and prevention, 931 Smoke, 8, 154, 324 abatement, 154, 322 density measurements, 1085' Smokeless arch, 8 Smokeless combustion, 324 Snow melting, 563 circulating medium, 568 design, 564 draining, 569 'drifting snow, 569 beat from slab, 567 beating requirements. 564' 'installation, 568 internal corrosion, 569 pumping head, 565 safety, 568 slab construction, 569 snowfall, 566 Solar constant, 8, 272 Solar heat, 272 absorbed by glass, 286 altitude, 273 calculation tables, 273-275, 289-294 through shaded windows, 296, 297 time lag, 298 _ transmission of, 272 through glass, 286' through roofs, 278 through walls, 280 Solar heat gain, 272 basic principles, 272 design for figured rolled glass, 293 design for flat glass, 287' design for glass block, 295 deviation from design, 295 shading glass, 296 Solar radiation, 272 absorption of, 272 magnitude, 272 Solar water heater, 1065. Sol-Air temperature, 277 Sonic agglomerators, 754 XX Soot, 151, 324, 352 Sorbents, 845 absorbents; 845, 846 adsorbents, 845- Sound (see Noise), 887' absorbers, 896, 899 apparatus for measuring, 888 attenuation, 890, 895 control, 887/905 cross transmission between rooms, 9C4 general problem, 888 duct absorbers, 896, 898 intensity, 887 isolation, 593 levels, 651, 888, 892 * ' measurement, 888 outlet absorbers, 901 pressure, 887 unit, 887 Space heaters, 404 design, 405 .' rating, 404 Split systems, 8 Splitter dampers, 678 Spray apparatus, 757 ' booths, 987 . cooling, 761' -\ cooling ponds,' 765 cooling towers, 767 dehumidifier, 651, 761 distribution, 763 , dryer, 1023 equipment, 757 generation, 763 humidifiers, 759, 763, 764 unit air conditioner, 593 N Spread, air distribution, 663, 668 Square foot of heating surface, 8 Squeeze dampers, 664 . Squirrel-cage induction motor, * 874,875,882 Stack, stacks, 217, 231, 409, 449 height, 8, 233 wall, 449, 452 smoke, 409 Standard, standards, 1089 ' air distribution, 661 atmosphere, 63 -Standard air, 1 Static, electricity elimination, 974 pressure, 7, 699, 723 ' regain, 706 Steady flow, energy equation, 24, 67 Steam, 8 coils, 785, 792 distribution piping, 489, 637 estimating consumption, 443, 645 flow, 491, 492 flow measurement, 78, 643 heated equipment, 305 beating systems, 479 condensate return, 479 connections to units, 518 control valves, 519 corrosion, 934 drips, 515 flash leg, 516 gravity one-pipe air-vent, 480 gravity return, 479 Hartford return, 481 high pressure steam, 483 low pressure steam, 483 mechanical return, 479 one-pipe, 480 orifice, 488 piping for, 489 sub-atmosphertc, 487 two pipe, 482 vacuum, 486 vapor, 484 jet type system, 821 - Steam (continued) 'meters, 78, 643 ' panel healing, 551 . pipe capacities. 492-501 .properties, 32, 49 rates, 645 reducing valves, 504 requirements, 443, 645 runout, 481 superheated, 8 tables, 32, 49 traps, 510 valves, 519 velocity, 493 Steel boilers, 384' Sterlization of air, 132 , Stoker, stokers, 355 classification of, 355 combustion adjustments, 360 combustion process, 357 controls, 363 furnace design, 361 mechanical, 355 \ overfeed flat grate, 359 overfeed inclined grate, 357 sizing and ratings, 362 underfeed, 358 Sub-atmospheric systems, 487 Summer air conditioning sys tem, 263, 477, 647 Summer comfort, 127, 128 Superheated steam, 8 Supply mains, 8 Supply openings, 460, 662, 673, 901, 1031 measurement of velocities, 1079 Supports, pipe, 609 Sudan condensation, 202, 630 conductance, 3, 170,179 coefficients, 92, 170, 628 external pipe, 623 heating, 9 extended, 9 temperature, 198, 403, 559, 1071 Suspended unit heater, 574 Symbols, 12,13,14 air conditioning, 21 for drawings, 17 heating, 18 piping, 17 ventilating, 19 * Tables air changes, 222 air conditioning temperatures and humitities, 960-970 air duct size, 452 .air leakage, 218, 220, 221 air requirements, 113 air, volume of, 32 allowable concentration ,, gases, vapors, 158 dust, fumes, 160, 161 altitude, pressure and tem perature, 63 analytical solutions for heat conduction, 107 anthracite size, 322 atmospheric gas, 931 atmospheric impurities, 153, 931 attenuation between grille and room, 897 data, lining board, 899 in straight ducts, 895 of branches, 896 of elbows, 896 of plate absorber, 900 azimuth angle, 275 black body radiation, 96 boiler ratings, 386, 387,389 bonnet pressure, 475 building load factors, 448 calorific value, 320,321, 331,336 l Tables (continued) .'- capacity constants, unit heat ers, 577 . capture velocities, 982 carbon dioxide maximum, 347 cast-iron boiler rating, 389 oeiling temperature, 248 chimney draft, 423 circular equivalents of rec tangular ducts, 690 classification of coals, 321 motors, 874 water, 928 climatic conditions, 241, 267 coal analyses, 320 coal classification, 321 codes, 1089' coil capacity balance, 795 combustible elements and compounds, 344 combustion rates 392 comfort ranges, 123 condenser design data, 780 conductance, 93, 170, 180 air space, 170, 180 conduction problem solution, 101, 107 conductivity materials, 91. 170, 175, 176, 180. convection conductances, 93 conversion equations, 15 conveying velocity, 982-992 cooling coil arrangements, 794. cooling tower pipe size, 1054 copper elbow equivalents, 523 copper tube capacity, 526 copper tube surface, 623 correction factors, steam radiator, 546 water radiator, 546 unit heaters, 577 corrosion resistance, 996 cost of air conditioning, 950 . decibel scale, 889 degree-days for cities, 437 . design dry- and wet-bulb tem- ' peratures, 241, 264, 267, 277, 960, 1039 design humidity, 960-970 dew-point, fuels, 352 draft in chimneys, 423 draft requirements of appli ances, 424 duct attenuation, 895 duct combinations, 463, 464 duct joints, 712 duct sizing, 452, 453, 455, 456, 464,471,472 duct velocity, 702 duct weight, 713, 714, 993 dust concentration,, 155 elbow attenuation, 896 elbow equivalent, 523, 1052 emissivity factors, 5 end reflection, 900 environmental conditions, limits, 118 equivalent length of fittings, 453, 468, 495, 1053 equivalent temperature dif- ' ferentials, 278, 280 exhaust pipes for machines, ' 988, 990 exhaust velocities, 982, 984-987 expansion tank sizes, 536 fan outlet velocity, 734 fan speed, 734 fitting allowance, 443, 468, 495 fitting dimensions, 611-614 fixture flow, 1046 fixture units, 1046 flammability of gases and vapors, 162 flanged fittings surface, 624 flue gas dewpoint, 350 free convection, 94 friction loss, pipe, 376, 492, 496-501,524,526 friction valves and fittings, 454, 495, 523, fuel consumption, 442, 443 XXI Tables (continued) . iuel oil properties, 330 fumes, concentration, 160 gas piping capacity, 376 gaseous fuel properties, 336 glass absorptance, 286 glass transmittance,.286 graphical symbols, 17 neat absorbed, cooling, water, 775 heat conductance, 93,101,171-- 175 heat equivalents, 257 heat flow walls and roofs, 186- 196, 278-282 heat gain appliances, 304 glass, 289, 291 glass blocks, 292, 293, 294 insulated cold pipes, 631 heat loss bare copper pipe, 622 bare steel pipe, 542, 622 basement, 251 a pipe coils, 542 radiation, 96 . heat transmission coefficients,' 186 building construction,,' 186197. 282 doors, 197 glass, 197 roofs, 194, 282 walls, 186 water heaters, 1062 'hot water demand, 1055, 1056, 1058 hot water pipe sizes, 523-526, 1048-1050 humidities, industrial air con ditioning, 960-970 incident angle, 274 infiltration through outside doors, 222 infiltration through walls, 218 - infiltration through windows,. 220 inflammability, gases, 162 inside temperatures, 247, 264 inside temperatures, 247, 264 960, 1039 instantaneous solar heat gain 289-294 insulation conductivity, 624 .insulation factors, 624 insulation thickness, 631, 633 insulation to prevent freezing, 633 insulation, underground, 635 intake velocity, 679 iron elbow equivalents, 523 life of equipment, 951 limits for contaminants, 158-- 163 load factors, 448 maintenance cost, 953 maximum allowable concen trations dust, fumes, mists, 160 dusts,* 160,161 flammable gases, 162 gases, 158 vapors, 158 metal gages for ducts, 712, 993 meter performance, 1052 minimum outdoor air require ments to remove odors, 113 moisture content for' mate rials, 972 moisture regain, 972 moisture transfer, 208 motor classification, 874 motor current, 875 motor design limits, 872 motor drive applications, 878 motor horsepower', 872 * motor ratings, 880 motor speed range, 872 motor voltage, 872 noise levels; 891 oil fuel specifications, 330 oil heat value, 331