Document KJX8aEEpKzErwpDX84pwY5GBN

Heating Ventilating ' Air Conditioning Guide 1950 Exhaust systems (continued) hoods (continued) axial velocity formula for, 923 canopy, 925 capture velocities 921 chemical laboratories, 926 design principles, 920 kitchen, 927 large open, 925 lateral exhaust, 926 low velocity systems, 924 spray booths, 926 suction, 921 velocity contours, 925 resistance of, 930 suction requirements, 923 types of fans, 931 velocity requirements, 921,928 Expansion factor, gaees, 89 of pipe, 482, 562 orifice plates, 85 tank piping, 498 tank size, 498 tanks, 498 valves, 784 F- Fan, fans, 439, 675 application, 689 arrangement of drives, 684, 686 attic, 691 location, 691 types, 675 axial flow, 675 centrifugal, 675 characteristic curves, 680-682 control, 686 designations, 684, 685, 686 efficiency, 677 furnace system, 425 installation, 689 laws, 677 motive power, 687 noise generated, 681, 683, 848 performance, 679 radial flow. 675 selection of, 687 air conditioning systems, 687 industrial exhaust systems, 941 ' speed, 677 system characteristics, 683 volume control, 686 Fanning formula. 77 Fever therapy, 145 equipment for production of. 145 Film conductance, 103, 169, 172, 178, 749 coefficient, 103, 172, 178, 749, 752 Filter, filters, 693, 704 air conditioning units, 544, 549 dry air, 693, 696, 962 dust, 693 installation, 700 performance, 697 selection, 699 testing, 697 viscous automatic, 695 viscous impingement ' type, 694 Fittings, 418, 432, 557 pipe allowance, 419, 432, 459, 487, 930, 984 types of, 419. 432, 557 Flexible mountings, 862 Float trap, 474 Floor cooling unit, 548 heat transfer coefficients. 190. 191 unit heater, 553 Flow coefficients, orifices, 86, 87 compressible fluids, 81 critical, 79 measurement liquids, 91 orifices, 83, 93 ' Pitot tube, 95, 1005 . steam, 90 Flow meters, 97, 597, 983 Flue gas loss, 316. 318 Fluid flow, 75 theory, 75 Fluid meters, 97, 597 Fog, 4, 154 Force, 4 Forced air heating system, 425 circulation pipe sizes, 495 convection, 104, 749 Free convection, 104 enthalpy, 4 Friction loss air ducts, 440, 641, 642, 643 circular pipes, 77, 641 elbows, 419, 432, 459, 487, 930, 984 gas piping, 348 non-circular pipes, 80 refrigerant piping, 787 water heating, 487 water piping, 487, 980-982 Fuel, fuels, 303 burning equipment, 329, 353 classification, 303, 307 * consumption, 399 degree-day method.- 402 load factor, 413 . maximum demands, 413 seasonal efficiency, 413 firing methods, 319-323 unit consumption, 407 utilization, 368 Fuel oil. 307 carbon residue, 308 classification of, 307 ^ combustion of, 314 grade of, 309 maximum carbon dioxide val- ues, 315, 343 theoretical air requirements, 314.343 viscosity, 308,342 Fumes, 4. 153 Fundamentals, beat transfer, 101 Furnace, furnaces. 4, 353. 367 capacity, 369, 370, 371 casings, 373 cast iron, 369 design, 372 efficiency, 372 fan, 368 gas-fired units, 344 gravity warm air, 367 Furnace. Furnaces (continued) heating surface, 370 heavy duty, 368 humidification equipment, 373 materials, 3ffl) mechanical warm air, 368 controls, 429 cooling methods, 439 cooling system, 441 dampers, 427 - ducts, 427 fans, 368 filters, 368 method of designing, 428 motors, 368 oil-fired units, 341 rating, 370, 371 steel, 369 stoker-fired units, 330 types, 369 volume, 4, 335,343 G Gage, gages draft, 1003 pressure, 7.1003 Garage ventilation, 223 Gas, gases,-154. 159, 307 atmospheric, 153, 157, 160, 877. 888 burner controls, 808 chimneys for heating, 392 classification of, 307 combustion of, 312, 313, 314, 315,325 estimating consumption, 407 expansion factor, 89 pipe size, 349 solubility, 878 space heaters, 377 specific heat, 5 Gaseous fuels classification of, 307 - combustion of, 312 maximum carbon dioxide val ues, 315 products of combustion, 313 properties of, 310' .' specific gravity, 310 ' theoretical air requirements, 314 .typical analyses, 310 Gas-fired appliances, 329, 349, 353, 377 boilers, 344 combustion process, 346 controls, 349, 808 conversion burners, 345 furnaces, 368, 371 measurement of efficiency of combustion, 347 ratings for, 347 sizing heating plants, 348 space heaters, 377 Glass coefficient of transmission, 102, 196, 278 - heat absorbent, 281 shading of, 284 solar heat transmitted, 278, 280 XVI Index to Technical Data Section Glass block walls coefficient of transmission, 196 solar heat gain, 282 Globe thermometer, 510, 528, 1014 Goff diagram, 51, 52 Graphical symbols for drawings, 17 duct work, 18 heating, 20 piping, 20 refrigerating, 21 ventilating, 20 Grate area, 5, 362, 363, 370 Greek alphabet, 14 Grille, grilles (see Regittera), 415, 426, 618 air supply noises, 851, 857 attenuation, 851 exhaust, 417, 426, 636, 972 locations, 426, 636 door, 637 floor, 637 wall, 629, 637 mechanical furnace systems, 426 noises, 627, 629, 858 railway car, 963 recirculating, 963 return, 417, 426, 636 selection, 858 velocity, 426, 635 . Ground temperatures, 236, 712 Guarded hot plate, 1013 Gun type oil burners, 337 H Hangers pipe. 563 Hartford return connection, 443, 445,470 Ha; fever symptoms, 147 Health. 135, 914 Heat, 5 area transmitting surface, 991 auxiliary sources, 242, 288' balance, 316 combustion, 304, 309, 310, 313 emission of appliances, 290 occupants, 120, 124, 125, 288, 516 exchange measurements, 118 flow* resistance, 107, 170 flow through roofs, 186, 192195, 270-277 flow through walls, 181-189, 270-276 gain, 249 generated by motors, 289 humid, 5 infiltration equivalent, 286 . instantaneous load, 258, 284 introduced by outside air, 286 latent, 5, 241, 249, 258, 287, 290, 294, 299, 605, 616 liquid, 5 mechanical equivalent of, 6, 15 methods of, transfer, 101 radiant, 105, 107, 108, 109, 503 removal, natural ventilation, 214 Heat (continued) sensible, 5, 240, 258, 287, 288, 290, 294, 605 factor, 605 specific, 5 transfer, 101, 169, 503, 516,575, 668, 749 boiler rates, 355 overall coefficients.-lOl, 169, 170, 503, 749, 992 surface coils, 744 symbols, 12, 105, 169 through building materials, 169, 270 water ooils, 992 Heat gain, 249 appliances, 290 ceilings, 270, 285 components of, 249 ducts, 607 electrical beating equipment, flooi?2285 gas burning equipment, 292 glass, 276 glass blocks, 280 infiltration, 286 instantaneous, 284 latent, 258, 616 lights, 289 moisture,-293 occupants, 288 outside air, 287 partitions, 285 people, 124, 288 roof, 266, 270 sensible, 240, 616 shaded windows, 282 solar, 249 steam heated equipment, 291 . various sources, 243, 294 ventilation, 286 wall, 266, 270 Heat loss air change, 240 bare pipe, 506, 575' basement, 237 duct, 668 infiltration, 240 insulated pipe, 577 latent, 241 residence problems, 243 sensible, 240 through ceilings and roofs, 239 to sky, 260 transmission, 169, 239 Heat pump, 760, 777, 998 Heater, heaters direct-fired unit, 531 electric, 534, 865 solar water, 995 unit, 531, 866 vertical blow unit, 533 Heating air conditioning units, 545 boilers, 353 surface, 2, 355 coil selection, 743 district, 591 domestic water by electricity, 869 effect, radiator, 508, 510 electric, 865 hot water, 868 load, 225, 360, 607 , Heating (continued) performance of coils, 749, 991 radiant (see Radiant Heating), 515 reversed cycle refrigeration, 777 steam systems, 443 surface, 9 square foot of, 8symbols for drawing, 17 up the radiator, 512 vacuum systems, 9, 450 vapor, 10, 448 warm air system, 10, 415, 425 water, 485, 977 Heavy duty fan furnace, 368 High duty humidifiers, 715 High temperature hazards, 121 Hood, hoods, 920 Horsepower, boiler, 2 Hospital, hospitals air conditioning in, 135 operating rooms, 140, 142 air conditions, 142 reducing explosion hazard, 141 sterilization of air, 135 ventilation requirements, 141 Hot water boiler supply load, 361, 977 coil surface, 991 demand per fixture, 977, 988 person, 987 electric heating, 868 heat pump, 998 heating surface, 991 indirect heater, 989 methods of heating, 988 panel heating, 515 radiant hearing, 515. service, 977 service piping, 993 solar heaters, 995 storage tank, 986 supply boilers, 354, 868, 989 piping, 993 temperature control, 994 Hot water heating systems, 6, 485 circulation head, 495 classification, 489 direct return system, 489 elbow equivalents, 487 expansion tank, 498 forced circulation, 486, 492 friction heads, 486 - gravity, 493 available head, 485 circulation, 485 pressure heads, 485 installation details, 501 mechanical circulators, 497 one-pipe farced circulation, 495 gravity circulation, 495 onfice friction heads, 491 pipe sizes, 487 forced circulation, 485 gravity circulation, 485. piping design, 492 pressure head, 486 reversed return system, 492 systems of piping, 489 XVll