Document Bydw3B6Jgy2Nz7yeYy9QMO9pj

HEATING VENTILATINC -AIR CONDITIONING GUIDE 1943 Pressure (continued) velocity, 850 water supply piping,'821 -Prime surface, 848 (see Heating surface) ; Propeller fan, 537 Properties of saturated steam, 24 Psychrometer, 848 Psychrometric chart, 60 Pulverized coal. 180 Pump, pumps condensation return, 281 mechanical circulators, 312 vacuum heating, 282 controls, 283 piston displacement. 285 Pyrometer, 671 optical, 671 radiation, 671 Q-R Radial flow fan, 575 Radiant drying, 800 Radiant heating, 803 ", application methods, 807 calculation principles, 808 detailed computation method, 811 drying methods, 747- electric. 808 hot water, 807 measurement of. 815' steam, 807 .. warm air, 807 v Radiating surface copper tubing, 779 - surface pipe, 779 Radiation, 848. angle factor, 78 equation, t7 load, 249 Radiator, radiators, 259, 848 codes, 263. 264 concealed. 262 connections, 303 direct, 845 . effect of paint, 265 enclosed, 268 gas-fired, 223 heat emission of, 259 ' heating effect, 265 heating up, 268 output of. 264 panel, 847 ratings, 263 recessed. 848- . tube, 849 types of, 260 warm air, 223 Railway air conditioning, 711 air distribution, 712 humidity control, 714. summer systems, 713 temperature control, 714 ventilation, 711 - winter systems, 713 Reciprocating compressors. 480. Recooling, 413 ' n `_ Rectangular duct equivalents, 610 Reducing valves, 301 Reflective insulation, 92 ' Refrigerant, refrigerants, 477, 848 ammonia, 476 carbon dioxide, 480 * dichlorodifluoromethane, 478 feeds, 508 methyl chloride, 479 monofluorotrichloromethane, 482 ` pipe sizes, 496 water, 482 Refrigeration, 475 absorption systems. 486 control, 656 equipment selection, 499 ice systems. 497 load, 164 mechanical, 475 reverse cycle, 800 storage systems, 499 symbols for drawing, 860 ton of, 849 day of, 849 types of compressors, 480 Regain, 725 control of. 723. hygroscopic materials, 724 Register, registers. 590. 597 (see Grilles) air supply noises, 637 mechanical furnace systems, 385 noises, 601 railway car, 712 . selections. 373 Reheat. 413 Reheating. 411 Relative humidity, 19, 848 measurement of, 678 . Repulsion induction motors, 685 Residence control systems, 666 air conditioning, 667. coal-fired heating plant. 666 domestic hot water supply,-666 cooling methods, 393 gravity furnace system, 369 heat loss problems, 141 hot water heating system, 311 humidity requirements. 392 mechanical furnace system, 383 steam heating system, 269 Resistance thermometers, 671 Resistors, 794 Return grille, 600 mains, 848 openings, 596 Reverse cycle refrigeration, 501, 800 Reversed return system, 312, 848 Roof, roofs - heat flow through. 153 time lag of solar radiation. 155 ventilators. 770, 848 Room air motion, 593 control, 647 cross transmission, noise, 640 '- latent heat, 406 - noise level, 628 - operating, 699. ... sensible heat. 406 ' Rotary dryer, 746 Rotary oil burner, 216 Run-around system, 417 ALPHABETICAL INDEX TO TECHNICAL DATA SECTION s Saturated air, 9. 848 Saturation. 848 degree of, 19. 844 pressure, 848 Secondary air, 170 Sectional boiler, 241 Self-contained control systems, 646 humidifiers, 536 unit conditioner, 441 Sensible cooling, 417' Sensible heat, 848 factor. 406 , gain, 149,164 loss, 128 Series wound motors, 682 Sheet metal gages, 621 Ship air conditioning, 718 Shunt wound motors, 681 Silica gel, 459 Silicon dioxide, 459 '- Single phase motors, 684 - Slotted outlets, 597 Smoke, 848 abatement, 560 density measurements, 680 Smokeless arch, 848 Smokeless combustion, 245 ' Solar heat through shaded windows, 155 ^ time lag, 155 transmission of. 149 transmitted through glass, 154 transmitted through walls. 153 Solar radiation against walls, 150 occlusion of. 560 Solar water heater, 840 Soot, 185 * Sound ' absorbers, 631 attenuation, 635 control, 625 ' cross transmission between rooms, 640 general problem, 626 duct absorbers, 631 , levels, 629- S outlet absorbers, 634 - - Space heaters, 223 Specific - enthalpy. 848 dry air, 5. 6 . water vapor, 8 . gravity,' 848 gaseous fuels. 184 heat, 848 gases, 861 liquids, 861 solids, 861 ' vapors. 861 volume, 848 air, 1 water vapor, 7 " Split phase motor, 685, 686 Split ^system, 848 ' Splitter dampers, 387 Spray booths, 739 '_ . cooling ponds. 543 " ' - Spray (continued) cooling towers, 545 distribution, 535 dryer, 746 * ' equipment, 531 generation, 535 humidifiers, 536 type unit, 447 unit air conditioner. 447 Spread, air distribution, 591 Square foot of heating surface, 848 Squeeze dampers, 387 Squirrel-cage induction motor, 686 Stack, stacks, 771 height. 848 Standard, standards, 851 air distribution, 589 atmosphere, 38 state air conditioning, 852 heating, 852 ventilating, 852 Standard air, 848 Static electricity elimination, 728 pressure, 848 control, 660 Steady flow energy equation, 36 enthalpy. 38 gravitational energy, 37 ' 'heat and shaft work, 33 .-kinetic energy, 36 Steam, 849 coils, 506 distribution piping, 329 estimating consumption, 238 flow, 289 heated equipment. 160 heating systems, 267, 287, 849 air line, 273 condensation return; 276 corrosion, 366 down-feed two-pipe vapor. 275- gravity one-pipe air-vent, 270 - gravity return, 269 gravity two-pipe air-vent, 273 mechanical return, 269 one-pipe vapor. 273 orifice, 280 piping for, 287 sub-atmospheric, 278 - two-pipe vapor, 274 vacuum, 276 high pressure, 301 jet type of compressor. 483 panel heating, 807 pipe capacities, 293 < radiant heating, 807 requirements, 340 runout. 270 superheated, 849 supply mains, 849 trap, 849 'v - Steel boilers, 242 Sterilization of air, 702. ' Stoker, stokers, 205 ~ classification of, 208 combustion adjustments, 213 combustion process. 211 controls, 214, 666 furnace design, 212 mechanical, 205 ,