Document 6yoxbR0LdZ9N6g3DNk8YZjjE

Heating Ventilating Air Conditioning Guide 1952 . Exhaust systems {continued) duct resistance, 066 duct velocity, 957, 963 ducts for, 964 air velocities in, 657, 963 construction, 965 design, 960 resistance, 966 dust filters, 723 efficiency of, 966 hoods, 956 air Sow, 959 air velocity, 959 axial velocity formula for, 959 canopy, 962 capture velocities, 957 chemical laboratories, 962 design principles, 961 kitchen, 963 large open, 961 lateral exhaust, 962 low velocity systems, 960 spray booths, 962 suction, 957 velocity contours, 960 resistance of, 966 suction requirements, 959 types of fans, 705 velocity contours, 960 velocity requirements, 964 Expansion factor, gases, 81, 82 of pipe, 508, 590 tank piping, 524 tank size, 524 tanks, 524 valves, 819 F Fan, fans, 449, 705 application, 719 arrangement of drives, 714 attic, 721 location, 721 - oTiftl flow, 705 centrifugal, 709 characteristic curves, 71(1*712 control, 716 designations, 706, 715 efficiency, 709 exhaust, 720 furnace system, 449 installation, 719 lawa, 707 marine, 720 mine, 720 motive power, 717 noise generated, 710, 876 . performance, 705, 709 radial flow, 705 selection of, 717 air conditioning systems, 717 industrial exhaust systems, * 967 speed, 718 .. system characteristics, 713 unitary systems, 720 volume control, 716 Fanning formula, 69 Fever therapy, 142 equipment for production of, 143 Film conductance, 92, 167, 168, 179, 783 Filter, filters, 723 air conditioning units, 570, 675 dry air, 723, 727, 998 dust, 723 installation. 732 performance, 729 Filter, filters {continued selection, 731 testing, 729 viscous automatic, 726 viscous impingement 725 type, Fittings sheet metal, 443, 446, 456,.678, 681, 966 pipe. 485, 513, 575, 585, 1020, 1021 allowance, 443, 456, 485, 513, 966, 1020 Flexible mountings, 889 Float trap, 500 Floor cooling unit, 571 heat transfer coefficients, 191, 192 unit heater, 555 Flow coefficients, orifices, 77 compressible fluids, 73 critical, 76 measurement head meters, 78, 83 liquids, 78 orifices, 78 Pitot tube, 84, 1043 variable area meters, 86 Flow meters, 78, 625, 1020 Flue gas loss, 347 Fluids flow, 67 theory, 67 Fluid meters, 78, 625 Fog, 4, 152 Force, 4 Forced air heating system,f449 circulation pipe sizee,|518 convection, 92, 93, 781 Free convection, 92, 94 enthalpy, 4 Friction loss air ducts, 464, 669 circular pipes, 69 elbows. 443, 456, 485, 513, 966, 1020 gas piping, 372 non-circular pipes, 72 refrigerant piping, 822, 823 water heating, 513-515 water piping, 513-515, 1016- 1018 Fuel, fuels, 317 analysis, 317, 327, 334 burning equipment, 353 classification, 317, 320, 328,335 consumption, 423 degree-day method, 427 load factor, 438 maximum demands, 438 seasonal efficiency, 424 firing methods, 321 gas, 333 liquid, 326 solid, 317 unit consumption, 434 Fuel oil, 326 analysis, 327 carbon residue, 328 classification of, 326 combustion of, 330 flashpoint, 329 grade of, 329 XVI Fuel oil {continued) maximum carbon dioxide val ues, 345 theoretical air requirements,- 343 viscosity, 328 Fumes, 4, 151 Furnace, furnaces, 4, 391 capacity, 393 casings, 397 cast iron, 393 % design, 396 efficiency, 396 fan; 392 forced warm air, 392 gas-fired units. 396 grate area, 395 gravity warm air. 391 heating surface, 394 heavy duty, 392 humidificationequipment, 397 materials, 398 mechanical warm air, 392 controls, 458 cooling methods, 466 cooling system, 467 dampers'. 451 ducts, 451 fans, 392 -filters, 392 method of designing. 396 motors, 392 ratings, 393 oil-firea units, 392 rating, 393 steel, 393 - stoker-fired units, 354 G Gage, gages draft, 1042 pressure, 7, 1041 Garage ventilation, 231 Gas, gases, 152, 158 atmospheric, 152, 164, 905 burner controls, 843 chimneys for heating, 416 classification of, 335 combustion of, 336 estimating comsumption, 433 expansion factor, 61, 82 heaters, 401 pipe size, 372 solubility, 908 apace heaters, 401 specific heat, 5 Gaseous fuels classification of, 335 combustion of, 336 maximum carbon dioxide val ues, 345 products of combustion, 340, 342 properties of, 334 specific gravity, 334 theoretical air requirements, 342, 344 typical analyses, 334 Gas-fired appliances, 368 boilers, 368 combustion process, 371 controls, 373 conversion burners, 368 furnaces, 368 measurement of efficiency of combustion, 371 ratings for, 372 , sizing heating plants, 382, 383 space heaters, 369 Index to Technical-Data Section Glass coefficient of transmission, 196 heat absorbent, 291 shading of, 297 solar heat transmitted, 286292 window transmittance, 288 - Glass block walls coefficient of transmission, 197 solar heat gain, 292-298 Globe thermomenter, 1036 Graphical symbols for drawings, 17 air conditioning, 21 duct work, 19 heating, 17 piping, 17 refrigerating, 21 ventilating, 19 Grate area, 5, 387, 394 Greek alphabet, 14 Grille, grilles, (see Register$), 439, 441, 450, 646, 657 air supply noises, 885 attenuation, 879 exhaust, 441, 664, 888 locations, 441, 658, 664 door, 665 floor, 665 wall, 665 mechanical furnace systems, 450 noises, 664 railway car, 999 recirculating, 999 return, 439, 441, 664, 888 selection, 886 velocity, 450, 663, 888 Ground temperatures, 244 Guarded hot plate, 1051 Gun type oil bumerB, 361 H Hangers plpe^`591 Hartford return connection, 471. 496 Hay fever symptoms, 144 Health, 131, 949 Heat, 5 area transmitting surface, 1029 auxiliary sources, 251, 302 balance, 347 combustion, 318, 335, 341, 342 emission of appliances, 304 occupants, 120-122, 303 exchange measurements, 114 . now resistance, 99,167 flow through glass, 286 flow through roofs, 181, 193196, 280-284 flow through walls, 282 gain, 257 generated by motore, 303 humid, 5 infiltration equivalent, 300 instantaneous load, 266, 299 introduced by outside air, 300 latent, 5, 249, 257, 302, 303, 304, 308, 312, 313, 314, 630, 633, 644 liquid, 5 mechanical equivalent of, 6,15 Heat (continued) methods of, transfer, 89 radiant, 92, 95, 96, 529 Tremoval, natural ventilation, 222 sensible, 5, 248, 257, 266, 302, 303, 304, 308, 312, 313, 314, 633, 644 factor, 632 specific, 5 transfer, 89. 186-197, 529, 603, 697, 781 boiler rates, 379 overall coefficients, 99, 167, 168, 186-197, 529. 781, 1029, 1030 surface coils, 776 symbols, 12, 100, 167 through building Trmfpriftlf> 167 water coils, 1030 Heat gain, 257 appliances, 304 ceilings, 275 components of, 257 ducts, 635 electrical heating equipment, floors, 290 gas burning equipment, 306 glaret, 286 glass blocks, 290 infiltration, 300 instantaneous, 299 latent, 266, 644 lights. 303 moisture, 307 occupants, 303 outside air, 302 partitions, 299 people, 120, 302, 303 roof, 275, 278 sensible, 266, 630 shaded windows, 297' solar, 257 8team heated equipment, 305 various sources, 251, 308 ventilation, 300 wall, 275, 278 Heat loss air change, 248 bare pipe, 532, 604 basement, 245 duct, 697 infiltration, 248 insulated pipe, 605 latent, 249 residence problems, 255 ' sensible, 248, 644 through ceilings and roofs, 248 to sky, 187, 273 transmission, 167, 24S Heat pump, 792, 810, 1035 Heater, heaters direct-fired unit, 555 electric, 557, 893 solar water, 1033 unit, 555, 894 vertical blow unit, 556 Heating air conditioning units, 571 boilers, 377 surface, 2, 399 coil selection, 775 district, 619 domestic water by electricity, 897 effect, radiator, 536 electric, 893 hot water, 897 load, 233, 384, 635 performance of coils, 783, 1030 xvii Heating {continued) reversed cycle refrigeration. 812 steam systems, 469 surface, 9 square foot of, 8 symbols for drawing, 17 up the radiator, 538 vacuum systems, 9,476 vapor, 10, 474 warm air system, 10, 439. 449 water, 511, 1013 Heavy duty fan furnace, 392) High duty humidifiers, 7471A High temperature hazards,lll7, 137 Hood, hoods, 956 Horsepower, boiler, 2 Hospital, hospitals air conditioning in, 131,147 operating rooms, 138 air conditions, 139 reducing explosion hazard. 138 sterilization of air, 132 ventilation requirements. 140 Hot water boiler supply load, 385, 1023 coil surface, 1029 . demand per fixture, 1014, 1015,1026 person, 1023, 1024 electric heating, 897 heat pump, 1036 beating surface, 1029 indirect heater, 1027 methods of heating, 1026 panel heating, 541 safety devices, 1032 service, 1013 service piping. 1030 solar heaters, 1033 storage tank, 1023 supply boilers, 378, 897, 1026 piping, 1013 temperature control, 1031 Hot water heating systems, 5, 511 circulation head, 511, 512, 519 classification, 515, 518' direct return system, 516 elbow equivalents, 513 expansion tank, 524 forced circulation. 512, 515 friction heads, 512 gravity, 515 available head, 511 circulation, 511 pressure heads, 511 installation details, 527 mechanical circulators, 621 one-pipe forced circulation, 516, 519 gravity circulation, 516, 519 orifice friction heads, 517 pipe sizes, 513 forced circulation, 511 gravity circulation, 511 piping design, 518 pressure head, 512 reversed return system, 518 systems of piping, 518 two-pipe faired, 516, 519 gravity, 516, 519 zoning, 52$ Human body acclimatization, 118