Document jZ96a3BnyB4GEZZDaEb4nqp9

American Society of Heating and Ventilating Engineers Guide, 1936 Gas-fired appliances (continued), installation, 506 rate of gas consumption, 505, 517 ratings of. 505 types of space heaters, 503 used with unit heaters, 227 warm air furnaces, 502 Gaskets, 620 Glass, heat transmitted through, 125, 164 solar radiation through, 163 window, area, 104 Glossary of terms, 771 Grates, 776 areas of, 400, 411, 424, 442, 776 of furnaces, 400, 411. 424, 442 of stokers, 485 Gravity, convectors, 521 heat emission of, 521 gravity-indirect heating systems, 530 specific, 2 steam heating systems, 533 one-pipe air-vent, 533, 536, 565. 577 two-pipe air-vent, 537, 566, 577 warm air heating systems, design of, 417 Greenhouses, temperatures for, 721 Grille, grilles, 776 (see also Registers) anemometer readings through, 765 for concealed heaters, 528 of roof ventilators, 92 for warm air systems, 409, 421 H Hartford return connection, 536, 574 Health, effect of air pollution on, 288 Heat, 776 absorbed by building structure, 151 air infiltration equivalent of, 140 capacity, 85, 162, 776 of leader pipes, 419 conduction, 773 consumption, 509 content, of air and water vapor, 10 of dry air, 21 of saturated water vapor, 22 convection, 773 conversion equations, 785 demand, factors governing, 143 effects on human body, 59 electrical equivalents of, 709. 786 emission, of convectors, 521, 528 by radiation, 692 of radiators, 521, 528 equivalent, equivalents, 785 of air infiltration. 140 of brake horsepower, 150 electrical, 709, 786 exchanger, 204, 206 shell and tube, 193 flow meter, 104, 769 gain, from fixtures and machinery, 165 from outside air, 165 to be removed, 175 nfiltration equivalent of, 140 latent, 30 loss, 82 of the liquid, 27, 777 loss, from bare pipe, 653 computation of, 103, 152, 692, 707 determination of, 143, 150, 509, 689 effect of insulation on, 667 by evaporation, 32 from human body, 82, 689, 691 by infiltration, 140, 509 by intermittently heated buildings, 413 latent, 82 from piping of gas-fired furnaces, 504 Heat (continued), by radiation. 67, 689 sensible, 82, 691 to unheated rooms, 128 maximum probable demand. 143 mechanical equivalent of, 778 of the liquid, 27. 777 produced by cattle, 99 produced by human body, 58 pump, 52, 706 radiant, 724 radiation, 779 regulation in man, 58, 62 requirements, 510 sensible, 179, 776 of air, 10 loss. 82, 691 of water, 30 solar, 160 sources of, 689, 703 other than heating plant, 150, 187 specific, 30 total, 21. 282, 781 of saturated steam, 27 transmission, 103, 689 through air spaces, 106 through building materials, 106 calculations, 103 coefficients, 103, 126 of ceilings, 119 combined, 127 of doors, 125 of floors, 119 of insulation, 107 of roofs, 122 of skylights, 125 of walls, 112 of windows, 125, 164 convection equation, 689 definition of terms used, 104 effects of solar radiation on, 169 formulae, 105 through glass, 125, 164 measurement of, 769 in surface coolers, 177 by surfaces not exposed to the sun, 159 symbols used in formulae, 104 tables, 103, 107 time lag, 162 utilization, 509 Heaters, for domestic hot water, 645 electric, 700 capacity of, 709 radiant, 503, 701 space, 503 unit, 218, 219, 702 wall, 503 Heating (see also Heat) district, 292, 671 effect of radiators, 524 electrical, 699 elements, electric, 700 fundamentals of, 1 load, 143 medium, 776 radiant, 689, 700 railway air conditioning, 259 by reversed refrigeration, 52, 706 surface, 437, 777 square foot of, 780 systems, district, 671 electrical, 699 fan, 387 gravity warm air furnace, 417 . hot water, 587 mechanical warm air furnace, 403 radiant, 689 steam, 533 units, blow-through, 389 central fan, 389, 702 draw-through, 389 water, 629 Henry and Dalton, law of, 626 XIV Alphabetical Index to Technical Data Section Hoods, axial velocity formula, 375 canopy, 377 for chemical laboratories, 378 design of, 375 for exhaust systems, 371 of furnaces, 405 open. 377 suction pressures at, 374 Horsepower, 777 boiler, 439, 457, 772 ian, heat equivalent of, 150 Hot box, 104, 769 Hot plate, 769 Hot water heating systems, 587, 777 electric, 704 forced circulation, 589 gravity circulation, 597, 601- installation of, 603 mechanical circulation, 601 Hot water piping, 587 Hotels, stokers suitable for, 490 temperatures of in winter, 144 water supply, 629 Humidification, 20, 201 atomization for, 213 effective temperatures for, 75 methods of, 239 relative humidities for, 75 for residences, 414, 526 systems of, 212 with water pans, 526 in winter, 171, 526 Humidifier, humidifiers,~253 atomizing, 213 with fan systems, 398 high-duty, 213 spray, 214 types of, 213 Humidistat, 271. 411, 777 Humidity, 7. 75, 777 absolute, 7, 771 control, 269 railway air conditioning, 263 effect of on acoustics, 338 , for industrial processing, 718 measurement of, 766 relative, 8. 75. 779 (see also Relative Humidity) A.S.H.V.E. standards, 75 in comfort zone, 70 effect on moisture regain, 713 relation to dew point, 9 specific, 8, 777 Hygrodeik, 777 Hygroscopic materials, 712 moisture content, 711, 732 processing of, 717 regain, 711, 712 Hygrostat, 271, 777 I Ice, in air conditioning, 194, 241, 407, 415 Inch of water, 777 induction motor, 749, 760, 751 Industrial, air conditioning, 711 apparatus for, 212 automatic control of, 281 classification of problems, 714 ~ air pollution, 289 cooling systems. 182 drying, 318, 713 electrical heating systems, 706 exhaust systems, 371 heat sources, 150 plants, 711 processing of hygroscopic materials, 713 temperatures and humidities for, 718 ^ unit heaters, 228 Infants, premature, 69, 70 Infiltration, 771 average, 138 fuel utilization, 509 heat equivalent, 140 through shingles, 133 through walls, 132 through windows, 134 Inlet opening, long throw, 343 short throw, 344 Institutions, water supply to, 631 Instruments, 761 Insulation, 777 asbestos type, corrugated, 658, 659 laminated, 660, 661 of boilers, 448 bright metal foil, 125 . building, 708 characteristics of, 107, 657. effect on heat loss, 667 with electrical beating, 699 heat transmission through, 107, 657 for low temperatures, 656 of machinery, 333 magnesia type, 657 of piping, 653 to prevent condensation, 151, 153, 665 to prevent freezing, 663 reflective type, 125 rock wool type, 662 of sound, 330 tables, 107, 657 thickness needed, 666 types of, 108 underground, 667 of vibration, 334 Internal combustion engines, 207 Ionization of air, 80 Isobaric, 777 Isothermal, 7, 777 Internal moisture gradient, 734 J-K Joints, expansion. 571, 673 Kata thermometer, 76,.766 'L Latent heat, 30, 777 loss, 82 of water vapor, 10 Lead poisoning, 290 Leader pipes, 417 heat carrying capacity of, 419 size of, 419, 429 Leakage of air, 131 (see also Infiltration) Length of run, equivalent, 561 Libraries, air conditioning of, 720 Lignite, 472 Lithium chloride system of adsorption, 184 Liquid, heat of the, 27, 777 Load. cooling, 85, 157 design, 438, 775 heating, 143 . hot water supply, 441 maximum, 440 radiation, 440 Loft dryers, 728 Loudness, 325 Louver fences, 209 M Machinery, as heat source, 150, 166 sound insulation of, 333, 335 XV