Document B5OMnbzg09OjJZvRLGVgbdKk4

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 Insulation {continued) duct, 683 low temperature, 697 pipe, 683 conductivity, 691 economical thickness, 701 to prevent freezing, 700 underground, 703 of vibration, 565 Intermittently heated buildings, 135 Interstitial condensation, 92 Ionization, 48 Iron elbow equivalents, 318 Isobaric, 779 Isothermal, 779 Kata-thermometer, 769 Lamisilate. 38 Latent heat, 31, 49, 57 of water, 30 Laws of thermodynamics, 779 leader pipe sizes, 350 Leakage of air, 117 Light heat gain, 153 Lignite, (see Coal) Liquid - adsorbents, 40 heat of, 778 Lithium chloride, 41 systems, 452 Load, cooling, 141 factors, 238, 737 heating, 127 * Loudness, 562 level, 537 M Magazine feed boiler, 241 Manholes, 727 Manometer, 779 Manufactured gas, {see Gaseous fuels) Mass. 779 Mb, 779 Mbh, 779 Mean radiant temperature, 67, 716 Mechanical circulators, 312 draft. 180 towers, 502 . efficiency, 517 equivalent of heat, 779 furnace systems, 363 air distribution. 367 automatic controls. 36 > cooling methods, 375 ducts, 369 fans, 366 filters, 366 heavy duty,' 373 humidification. 373 method of design. 369 motors, 366 sound control, 366 stokers. 199 Mercurial thermometers, 703 Metabolic, processes, 45 rate, 57 Metabolism, 49, 57 Meters condensation, 731, 735 differential, 734 flow, 735 fluid, 734 Nicholl's heat, 773 orifice, 737 positive, 734 sound level, 562 vacuum condensation, 736 Venturi, 768 water disc, 747 Methyl chloride, 34 Micromanometers, 767 Micron, 77, 505, 779 Microphone, 562 Mineral particles, 78 Mists, 77 Moisture, capillary, 623 content, 599 equilibrium, 623 hygroscopic, 623 Mol. 779 Monofluorotrichloromethane. 36 Motors. 366 damper, 651 heat generated, 153 for industrial exhaust systems, 617 Motors, electric, 135, 669 adjustable speed, 670 adjustable varying speed, 670 alternating current, 671 capacitor type, 672 classification of, 674 compound wound, 669 constant speed, 670 control equipment for, 677 direct current, 669 . polyphase, 673 repulsion induction, 672 series wound, 669 shunt wound, 669 single phase, 672 slip ring induction, 676 speed characteristics; 670 split phase, 673 squirrel cage induction, 673 synchronous, 677 varying speed, 671 Mouth spray infection, 47 Multiple blade fans, 524 N Natural draft, 179 towers, 501 Natural gas, (see Gaseous fuels) Natural ventilation, 639 Nature's dust catcher, 84 Nicholl's heat meter, 773 Nitrogen, 157 Noise, 561 acceptable levels. 563 apparatus for measuring, 562 coefficients, 572 created by equipment, 564 fan. 523 kinds of- 564 levels, 562 reduction, 570 transmitted through ducts, 569 unit of measurement, 561 xvui ALPHABETICAL INDEX TO TECHNICAL DATA SECTION O Occlusion of solar radIatlon^*82 Odors, 46 human body. 46 Oil, burner control. 664 burning furnace, 364 estimating consumption, 234 Oil burners. 210 boiler, 241 boiler settings. 214 combustion adjustments, 216 commercial, 213 controls, 217 furnace design, 215 gun type, 211 orsat test. 216 pot type, 211 rotary. 211 One-pipe supply riser, 779 One-pipe system, hot water. 779 steam 779 Operating rooms,-573 Operative temperature. 51 Optical pyrometers, 765 Organic matter, 45 Orifice, friction heads, 322 heating systems, 278 meter, 737 Orsat apparatus, 773 Oscillatingventilator, 643 Outlet velocity for fans, 523 Outside temperature, 127, 131 Overhead system, 779 Oxygen, 45, 157 t Oxygen therapy, 581 chambers,' 582 tents. 581 Ozone, 48 ' P Panel radiator. 779 Panel wanning. 779 Pathogenic organisms, 48 Perforated ceiling, 542 Petroleum coke, 168 Petterson-Palmquist apparatus, 771 Phon, 561 Physiological principles, 45 Pilot thermostat, 655 Pipe, piping, 327 anchoring. 335 capacities, 295 cast ferrous, 328 coil connections, 306 conduit, 727 copper, 328 corrosion, 346 dimensions, 328 equivalent length of run, 292 expansion, 332 flanges, 343 flexibility, 332 hangers, 336 insulation, 683 economical thickness, 701 Pipe {continued) to prevent freezing, 700 underground, 703 maximum velocity, 290 pressure drop, 290 refrigerant sizes, 444 sizes, 290. 294. 726 effect of reaming, 293 effect of smoothness, 293 Hartford return connection, 300 for hot water heating systems, 312 indirect heating units, 305 one-pipe gravity air-vent system, 294 one-pipe steam systems, 291 orifice systems, 299 for steam heating systems, 287 sub-atmospheric systems, 299 two-pipe gravity air-vent system, 298 two-pipe steam systems, 291 two-pipe vapor systems, 298 vacuum systems, 299 supports, 336 tax, 247 thermal expansion, 335 thread connections, 338 threads, 335 tunnels, 730 water supply, 741 weights, 332 welded, 327 wrought-iron, 327 wrought-steel, 327 Pipe coils, 257 heat emission, 259 wall, 258 Piston displacement vacuum pumps, 283 Pitot tube. 767 . Plenum chamber, 780 Plumbing fixture flow, 743 Pneumatic control systems, 652 Pneumonia. 48 Pollen, 77, 505 Pollution, 77 Polyphase motors, 673 Pot type oil burner, 211 Potentiometer, 780 Pour point oil temperature, 174 Power, 780 fan motive, 527 Precipitators, 512 Premature infant nurseries, 576 air conditions. 576 equipment, 577 humidity, 576 Pressure absolute, 775 atmospheric, 775 barometer, 766 controllers, 651 gages, 766 loss through water meters, 747 measurement, 765 reducing valves. 302 suction, hoods, 608 velocity, 782 Prime surface {see Heating surface) Primary air, 163 Propeller anemometer, 770 Propeller fan, 515 Psychrometer, 75, 780 Pulse rate, 54. Pulverized coal, 172 Pumps, 280 condensation, 280 piston displacement vacuum, 283 vacuum. 281 Purchased steam,' 725 Pyrometers. 765, 780 optical, 765 radiation. 765 XIX