Document 7RrK4LDKwEGJd6qR0pmLNym0o

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Pressure (continued) gages, 630, 794 loss through water meters, 775 measurement, 629 barometer, 629 static. 796 total. 797 vapor, 798 velocity, 798 Prime surface. 796 (see Heating Surface) Propeller fan, 543 Properties of saturated steam, 24 Psychrometer, 796 Psychromeiric chart, 33 humidity. 704 Pulverized coal, 158 Pump, pumps condensation return, 261 mechanical circulators, 292 vacuum heating, 262 controls, 263 piston displacement, 264 Pyrometer, 629, 796 optical, 629 radiation, 629 O-R Radial flow fan, 543 Radiant drying, 756 Radiant heating, 759 application methods, 762 calculation principles, 764 detailed computation method, 766 electric, 764 hot water, 762 measurement of, 767 steam, 762 warm air, 762 Radiation, 796 drying methods, 697 heat transmission, 727 load. 229 Radiator, radiators, 239, 796 codes, 247 concealed, 245 direct, 793 effect of paint, 241 effect of superheated steam, 241 enclosed, 243 heat emission of, 239 heating effect, 242 heating up, 243 output of, 240 panel, 795 recessed. 796 selection, 246 tube, 797 types of. 239 Railway air conditioning, 665 air distribution, 666 humidity control, 668 summer systems, 667 temperature control, 668 ventilation, 665 winter systems, 667 Reciprocating compressors, 448 Reflective insulation, 74 Refrigerant, refrigerants, 444, 796 ammonia, 444 carbon dioxide, 448 dichlorodifluoromethane, 446 feeds, 478 methyl chloride, 447 monofluorotrichloromethane. 450 pipe sizes, 461 water, 450 Refrigeration, 443 absorption systems, 454 control, 614 equipment selection, 467 ice systems, 466 mechanical, 443 reverse cycle, 469, 756 ton of, 797 day of, 797 types of compressors, 448 Regain, 677 control of, 676 Register, registers, 557 (see Grilles) noises, 564 railway car, 666 selections, 349 types of, 569 Relative humidity, 19, 796 measurement of, 636 Repulsion induction motors. 642 Residence control systems, 624 air conditioning, 625 coal-fired heating plant, 624 domestic hot water supply, 624 heat loss problems, 121 Resistance thermometers, 629 Return mains. 796 Reverse cycle refrigeration, 469, 769 Reversed return system. 796 Roof, roofs heat flow through, 131 time lag of solar radiation, 133 ventilators, 719, 796 Room control, 605 Rotary drier, 698 Rotating ventilator, 720 S Saturated air, 9. 796 Saturation, 796 degree of, 19, 792 pressure, 796 Secondary air, 148 Self-contained control systems, 604 Sensible beat. 796 loss, 109 Series wound motors, 639 Settling chambers. 540 Shunt wound motors, 639 Silica gel, 427 Silicon dioxide, 427 Single phase motors, 642 Smoke, 796 abatement, 530 density measurements, 638 stacks, 542 Smokeless arch. 796 XX ALPHABETICAL INDEX TO TECHNICAL DATA SECTION Solar heat through shaded windows, 133 time lag, 133 transmission of, 127 transmitted through glass, 132 . transmitted through walls, 131 Solar radiation occlusion of, 530 Soot, 163 Sound control, 558, 591 general suggestions, 592, 602 level meter, 592 Specific enthalpy, 796 . dry air, 5 of water vapor, 7 Specific gravity, 796 - Specific heat, 796 gases, 807 liquids, 807. solids, 807 vapors, 807 Specific volume, 796 of air, 1 of water vapor, 7 Split phase motor, 643 Split,system, 796 Spray booths, 690 cooling ponds, 513 cooling towers. 515 distribution, 605 equipment, 501 generation, 505 humidifiers, 506 Square foot of heating surface, 796 Squirrel cage induction motor, 643 Stack, stacks height, 796 smoke. 542 Standard air, 796 Static electricity elimination of, 681 Static pressure, 580, 796 control, 618 ^ Steady flow energy equation, 34 enthalpy. 35 gravitational energy, 35 heat and-shaft work, 35 kinetic energy, 34 Steam, 797. - coils, 476 distribution piping, 307 estimating consumption, 218 flow, 269 heating systems, 249, 267, 797 air line, 253 condensation return, 256 corrosion, 342 down-feed two-pipe vapor, 255 gravity one-pipe air-vent, 250 gravity return, 239 gravity two-pipe air-vent, 253 mechanical return, 249 one-pipe vapor, 253 orifice, 260 piping for, 267 sub-atmospheric, 258 two-pipe vapor, 254 vacuum, 256 jet type of compressor, 451 Steam (continued) panel beating, 762 radiant heating, 762 requirements, 318 superheated, 796 supply mains, 797 trap, 796 Sterilization of air, 656 Stoker, stokers, 183 classification of, 187 combustion adjustments, 191 combustion process, 190 controls. 191, 624 furnace design. 190 mechanical, 183 overfeed fiat grate stokers, 183 overfeed inclined grate stokers, 184 sizing and ratings. 191 underfeed, 797 rear cleaning, 187 side cleaning, 185 Sub-atmospheric systems, 258 Submerged heating coil, 786 Summer comfort, 61 Supply mains, 797 Supply openings, 557 measurement of velocities, 634 selection of, 568 types of, 569 Surface condensation, 98 conductance, 70, 797 coefficients, 72 heating, 794 extended. 793 Symbols for drawings, 803 T Table average maximum water main temperatures, 509 capacity constants for blow-through unit heaters, 394 capacity constants for draw-through unit heaters, 394 circular equivalents of rectangular ducts, 576 circumference and areas of circles, 808 classification of coals. 153 classification of electric motors, 644 climatic conditions, 116 combustible elements and compounds,.144 conductivity of insulating materials for pipes, 735 degree days for cities, 214 design dry- and wet-bulb temperatures, 126 desirable inside conditions in summer, 62 drying time for materials, 706 exnissivity values for various surfaces, 728 explosive properties of anesthetic, 654 flame temperature data, 146 gain for insulated cold pipes, 742 gas combustion constant, 709 heat gain through glass blocks, 135 heat gain from various sources, 138 heat loss from copper pipe, 730, 731 heat loss from steel pipe. 730 heat transmission coefficients, 69heat transmission through insulated ducts, 740 hot water*consumption in various types of build ings, 789 hot water demand for various types of .fixtures, 789 XXI