Document jB6ZJdD6a6G9dMrR9RBZB82ER

Heating Ventilating Air Conditioning Guide 1950 Prime surface (tee Heating Sur face), 9 Propeller fan, 675, 691 Protective coatings, 890 Psychrometer, 7. 53 Psychrometric chart, 138 Pump, pumps condensate return, 472 mechanical circulators, 485 vacuum heating, 472 controls, 473 piston displacement 473 Pyrometer, 7, 1002 optical, 1002 radiation, 1002 R Radial flow fan, 675 Radiant drying, 952 Radiant heating, 515 application methods, 518 calculation principles, 520 control, 528 electric, 520 fundamental computations, 517 hot water, 518 mean radiant temperature, 515 measurement of, 527 objective, 517 operative temperature, 516, 529 steam, 519 warm air, 518 Radiation, 7 baseboard, 503, 505 equation, 106 load, 360 shape factor, 106 Radiator, radiators, 7, 503 baseboard, 503, 505 codes, 508, 1023 concealed, 507 connections. 481, 482 correction factor, 509 direct, 7 effect of paint, 509 enclosed, 512 ms-fired, 346 neat emission of, 503 heating, 512 - heating effect, 510 output of, 503 panel, 6 ratings, 508 recessed, 7, 507 tube, 503 types of, 503 warm, air, 346 Railway air conditioning, 961 air cleaning, 962 air distribution, 962 humidity control, 964 summer systems, 962 temperature control, 964 ventilation, 962 winter systems, 961 Reciprocating compressors, 779 Recooling, 601 Rectangular duct equivalents, 645 Reducing valves, 468, 594 Reflective insulation, 172, 180 Refrigerant, refrigerants, 8, 761 dichlorodifluoromethane, 761, 763 feeds, 739. 740 monochlorodifluoromethane, 761, 765 monofluorotrichloromethane, 761, 766 pipe sizes, 787, 788 water, 773 Refrigeration, 759, 962, 966, 973 absorption systems, 775 air cycle, 772 ammonia, 788 basic concepts, 759 complex cycles, 771 compressors, 778-781 condensers (see Condensers) 781 control, 784-787 coolers, 783, 784 definitions, 759 discharge pressure, 769 equipment selection, 778 evaporators, 783, 784 expansion valves, 784 float valves, 785 heat pump, 777 ice systems, 776 load, 249 mechanical, 759, 962, 966, 973 piping, 787 reverse cycle, 777 ship, 973 simple cycle, 764 steam jet, 773 suction, 769 symbols for drawing, 17 theory, 759 ton of. 8, 759 types of compressors (see Com pressors), 778-781 vapor .compression cycle, 764 water jacket, 769 Regain, 910 control of, 910 hygroscopic materials, 911 static, 661 Register, registers, (see Grilles), 417, 418, 426. 618 air supply noises, 657, 857 mechanical furnace systems, 425 noises, 858 selection. 417, 418, 427, 428, 630 Reheat. 604, 613 Reheating, 604, 613 Relative humidity, 5, 66 measurement of, 1010 Repulsion induction motors, 831 Residence control systems, 808 - air conditioning, 805 coal-fired heating plant, 808 domestic hot water supply, 993 cooling methods, 439 gravity furance systems, 415 heat loss problems, 237 hot water heating system, 485 Residence (continued) mechanical furnace system, 425 steam heating systemf 443 Resistance thermometers, 1002 Resistors, 865 Return grille, 417, 419 mains. 8, 443, 462, 465, 490 openings, 417, 428, 636 Reverse cycle refrigeration, 777, 778 Reversed return system, 8, 492 Roof, roofs heat flow through 193-196,266- 277 time lag of solar radiation, 264, 267 ventilators, 217 Room air motion, 617, 626 control, 806 ' cross transmission noise, 860 latent heat, 605 noise level, 847 operating, 140 sensible heat, 605 Rotary dryer, 953 Rotary oil burner, 338 Run-around system, 612 s Sanitary ventilation, 135 Saturated air, 1, 49 Saturation, 8 degree of, 8, 49 pressure, 7 Scale, 873 cause and prevention, 877 closed systems, 879 heating systems, 880 high temperature, 880 ' open systems, 880 Secondary air, 315, 346, 347 Sectional boiler, 353 Self-contained' control systems, 805 ' humidifiers, 716 unit conditioner, 545 Sensible cooling, 611 Sensible heat, 249, 258, 290, 294, 299, 605, 616 factor, 605 gain, 249, 287, 290, 293 loss, 237 Sheet metal gages, 665 Ship heating, ventilation, air '. conditioning, 970 air conditioning, 970, 973 design conditions. 971, 972' factors affecting design, 971' general consideration, 970 - heating, 971 insulation of hull, 971 ducts, 970 refrigeration, 973 " requirements for space, 971 bakery. 972 bath, 972 ` cargo, 973 food handling, 972' galley, 972 XX Index to Technical Data Section Ship heating, ventilation, air conditioning (continued) requirements (continued) laundry, 972 living, 972 machinery, 971 shower, 972 storeroom, 973 toilets, 972 washroom, 972 systems, typical, 974 ventilating, 971 Shunt wound motors, 824 Silica gel, 795, 797 Silicon dioxide, 797 Single phase motors, 823, 832 Slime, 881 cause and prevention, 881 formers, 875 Slotted outlets, 620 Sludge, 873 cause and prevention, 877 Smoke, 8, 153 abatement, 157, 321 ' density measurements, 1014 Smokeless arch, 8 Smokeless combustion, 157, 321 Solar heat, 258 abosrbed by glass, 279 altitude, 259 through shaded windows, 282, 284 time lag, 265 . transmission of, 258 ' through glass, 276 through roofs, 270 through walls, 270 Solar constant, 8, 259 Solar radiation, 259 absorption of, 259 Solar water heater, 995 Sol-Air temperature, 262, 268 Soot, 326 Sorbents, 795 absorbents, 795, 800 adsorbents, 795 Sound (see Noise), 843, 846 absorbers, 852 attenuation, 851 control, 843 cross transmission between rooms, 860 genera] problem^ 844 duct absorbers, 852, 854, 856 intensity, 845 isolation, 549 levels, 617, 847 outlet absorbers, 857 pressure, 845 Sp&oe heaters, 374 Specific enthalpy, 4, 35, 71, 72 dry air, 35, 52 entropy, 4, 24 gravity, 5 heat, 5 volume, 10 air, 35 water vapor, 36 Split system, 8 Splitter dampers, 634 Spray apparatus, 709 booths, 926 cooling, 716' cooling ponds, 717 cooling towers, 719 dehumidifier, 713 .. Spray (continued) distribution, 715 dryer, 955 equipment, 709 generation, 715 humidifiers, 711, 716 unit air conditioner, 545 Spread, air distribution, 617,619 Square foot of heating surface, 8 Squeeze dampers, 427, 634 Squirrel-cage induction motor, 822, 834 Stack, stacks. 205, 218, 219,379, 415, 418 height, 8, 220 wall. 415, 418 smoke, 379 Standard, standards. 1019 air distribution, 617 atmosphere, 70 Standard air, 1 Static electricity elimination, 914 pressure, 7 regain, 661 Steady flow, energy equation, 70 enthalpy, 4, 23, 69 ravitational energy, 69 eat and shaft work, 69 kinetic energy, 68 Steam, 8 coils, 737 distribution piping, 591 estimating consumption. 399, 410, 599 flow, 455 flow measurement, 90 heated equipment, 291 heating systems, 443 condensate return, 443 connections to units, 482 control valves, 483 corrosion, 880 gravity one-pipe air-vent, 444 vity return, 443 h pressure steam, 447 low pressure steam, 447 mechanical return, 444 one-pipe vapor, 446 orifice, 452 pining for, 443 sub-atmospheric, 451 ' two-pipe vapor, 448 vacuum, 450 jet type of compressor, 773 meters, 597 panel heating, 515 pipe capacities, 458, 460-468, 977 properties, 36, 48 radiant heating,5l5 rates, 599 reducing valves, 468 requirements, 410, 599 runout, 445 superheated, 8 table, 36, 48 traps, 474 Steel boilers, 354, 356 Sterilisation of air, 137 Stoker, stokers, 329 classification of, 329 combustion adjustments, 334 combustion process, 331 XXI Stoker, stokers (continued) controls, 337, 808 furnace design, 335 mechanical, 329 overfeed flat grate, 331 overfeed inclined grate, 331 sizing and ratings, 336 underfeed, 330 Sub-atmospheric systems, 451 Summer air conditioning sys tem, 249, 439. 601 Summer comfort, 126,130 Superheated steam, 8 Supply mains, 8 Supply openings, 426, 629, 963 measurement of velocities, 1009 Supports, pipe, 563 Surface condensation, 197, 201, 584 conductance, 3, 172, 177, 178 coefficients, 104, 177, 178,582 external pipe, 577 heating, 9 extended, 9 temperature, 196,373, 522, 523, 1002 Suspended unit beater, 533 Symbols, 12,13,14 ductwork, 18, 19 for drawings, 17 beat transfer, 13, 169 heating, 20 piping, 17 refrigerating, 21 ventilating,- 20 T Tables air changes, 210 air conditioning temperaturm and humidities, 908 air requirements, 117 air, volume of, 24 altitude, pressure and temper ature, 71 anthracite, size, 306 area flanged fittings, 578 atmospheric gas, 877 attenuation between grille and room, 853 data, lining board, 855 in straight ducts, 851 of branches, 852 of elbows, 852 average maximum water temperatures, 712 azimuth difference angle, 283 black body radiation, 108 boiler ratings, 356, 357, 359 bonnet pressure, 439 building load factors, 413 capacity constants blow-through unit heaters, 535 draw-through unit heaters. 535 capture velocities, 921 carbon dioxide maximum, 315 ceiling temperature, 234 circular equivalents of rec tangular ducts, 395, 646 classification of coals, 305 motors; 822 water, 874 S