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HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Radiator {continued) effect of superheated steam. 257 * enclosed. 260 gas-fired. 215 heat emission of. 253 heating effect. 257 heating up. 259 output of. 256 panel. 841 recessed. 842 .* selection, 263 tube. 843 types of. 253 warm air. 215 Railway air conditioning, 709 air distribution, 710 humidity control. 712 summer systems. 711 temperature control, 712 ventilation. 709 winter systems, 711 'Reciprocating compressors, 484 Recooling, 413 Reflective insulation, 88 Refrigerant, refrigerants, 481. 842 ammonia, 480carbon dioxide^ 484 dichlorodifluoromethane, 482 feeds. 514 methyl chloride. 483 monofluorotrichloromethane, 486 pipe sizes, 497 water, 486 Refrigeration, 479 absorption systems. 490 control. 658 equipment selection. 503 ice systems, 502 mechanical. 479 reverse cycle, 505, 796 ton of, 843 day of, 843 types of compressors, 484 Regain, 721 control of, 720 Register, registers, 595 (see Grilles) noises, 603 railway car, 710 selections. 369 types of, 607 -Rectangular duct equivalents, 614 ,, Reheat, 413 Reheating, 411 Relative humidity. 19, 113, 842 raeasu/ement of, 680 Repulsion induction motors, 686 Residence, control systems, 668 air conditioning, 669 . coal-fired heating plant, 668 domestic hot water supply, 668 cooling methods, 391 gravity furnace system, 365 .. heat loss problems, 135 hot water heating system, 309 humidity requirements, 390 mechanical furnace system, 379 steam heating system, 267 Resistance thermometers, 673 Resistors. 790 * Return mains, 310, 842 Reverse cycle refrigeration.'505, 796 Reversed return system, 310, 842 Roof, roofs, heat flow through, 145 time lag of solar radiation. 147 ventilators, 766, 842 Room, control, 649 noise level 632 operating, 697 Rotary drier, 742 Rotary oil burner, 208 Run-around system, 417 S Saturated air, 9, 842 Saturation. 842 degree of. 19,. 838 pressure, 842 Secondary air. 162 Sectional boiler, 235 Self-contained conditioner, 443 control systems, 648 humidifiers. 542 Sensible cooling, 417 , Sensible heat. 842 loss. 51. 123 Series wound motors. 683 Settling chambers. 577 Sheet metal gages, 624'. Shunt wound motors, 683 Silicon dioxide, 463 Silica gel. 463 Single phase motors. 686 Smoke, 842 abatement, 566 density measurements, 682. stacks, 578 Smokeless arch, 842 combustion, 239 Solar beat, through shaded windows, 147 time lag, 147 transmission of, 141 transmitted through glass^ 146 transmitted through walls, 145 Solar radiation, . _ . against walls, 142 occlusion of. 566 Soot, 177 Sound, absorbers, 636 ' air supply, 603 attenuation, 640 control 382, 625, 629 levels, 633 . Specific - enthalpy, 842 dry air, 5 water vapor, 7 gravity. 842 heat, 842 gases, 854 liquids, 854 solids, 854 vapors, 854 ,r XX ALPHABETICAL INDEX TO TECHNICAL DATA SECTION Specific (continued) volume, 842 air, 1 .water vapor, 7 Split phase motor, 687 Split system, 439, 842 Splitter damper, 384 Spray, booths. 734 cooling ponds, 549 cooling towers. 551 distribution. 541 equipment, 537 generation, 541 humidifiers, 542 type unit, 451 Square foot of heating surface. 842 Squeeze damper, 384 * Squirrel cage induction motor, 687 Stack, stacks, 767 height, 842 smoke, 578 Standard air, 842 Static, electricity elimination, 725 pressure, 842 control, 662 Steady flow energy equation, 34 enthalpy, 35 , gravitational energy, 35 - - heat and shaft work, 35 kinetic energy, 34 Steam, 843 coils. 512 distribution piping. 325 estimating consumption, 232 flow. 287 , heating systems, 267, 285, 843 air line, 271 condensation return. 274 corrosion, 362 down-feed two-pipe vapor, 273 gravity one-pipe air-vent, 268 gravity return, 267 . gravity two-pipe air-vent, 271 mechanical retdm, 267 one-pipe vapor,' 271' orifice, 278 piping for, 285 . sub-atmospheric, 276 two-pipe vapor, 272 * vacuum, 274 high pressure, 299 jet type of compressor, 487 ' panel heating, 802 pipe capacities, 291 radiant heating, 802 requirements, 336 runout, 268 superheated. 843 supply mains, 843 trap, 843 Steel boilers, 235 Sterlizalion of air, 700 Stoker, stokers, 197 classification of, 200 combustion adjustments, 205combustion process, 203 controls, 206. 668 furnace design, 204 mechanical, 197 overfeed flat grate, 197 Stoker (continued) overfeed inclined grate, 199 sizing and ratings, 205 underfeed, 843 rear cleaning, 199 side cleaning. 199 Sub-atmospheric systems. 276 Summer -- air conditioning system, 393- comfort, 62 Supply mains,.843 openings, 603 measurement of velocities. 678 - selection of, 606 types of, 607 Suspended unit heater, 427 Surface, condensation, 112' conductance, 84, 843 coefficients,'86 heating, 840 extended,839 temperature, 528. Swimming pool heating requirements,' 836 Symbols for drawings, 849 T Table, areas flanged fittings, 775 attenuation between grille and room. 635 average maximum water main temperatures, 545 capacity constants. blow-through unit heaters, 430 draw-through unit heaters, 431 chimney sizes, 190 circular equivalents of rectangular ducts. 615 circumference and areas of circles; 855 classification of, coals. 167 electric motors. 688 " climatic conditions. 130 combustion elements and compounds, 158 conductivity materials. 70, 93" .* degree days for cities, 228 design dry- and wet-bulb temperatures, 140 drying time for materials. 750 duct attenuation, 634 elbow attenuation, 634 emissivitie9 of surfaces, 80 explosive properties of anesthetic, 698 flow steam in pipes, 286 flame temperature data, 160 free convection factors. 71 gas combustion constant, 753 heat gain, appliances, 152 glass blocks, 149 insulated cold pipes, 781 heat loss. bare copper pipe, 773, 774 bare steel pipe. 773 heat transmission, coefficients, 83 free convection, 71 radiation, 73 infiltration through windows, 118 minimum outdoor air requirements to remove odors. 40 . noise levels, 633 XXI