Document Oz496X7bm2j8Z8ga7x7zm8NJ1

Heating Ventilating Air Conditioning Guide 1950 Hot water beating systems (continued) two-pipe forced, 497 gravity, 496 zoning, 503 Human body, acclimatization, 122 adaptation. 118 cold conditions, 123 hot conditions, 123 __ heat emission, 117, 118, 120, 288,516 , high temperature hazards, 121 metabolic rates, 120, 127 odors, 117 temperature, 117 zone of evaporative regulation, 118 Humid heat, 5 Humidification* 531, 711, 716 control, 429, 805 direct, 713 mechanical furnace systems, 373 Humidifier, humidifiers air washer, 709 atomizing, 715 high duty, 716 spray, 716 unit, 716 Humidify, 5 Humidistat, 5, 806 Humidity, 5 absolute, 5 control, 806, 964 influence of, 128,144 measurement of, 1010 nurseries for premature in fants, 144 permissible relative, 198 ratio, 5, 35 relative, 5, 66, 605 Hydraulic radius. 99, 105 Hygrostat, 5, 806 I Ice systems, 776 Impulse trap, 477 Inch of water, 5 Induction units, 609 high pressure types, 810 low pressure types, 609 Industrial air conditioning, 907 conditioning and drying, 912 contaminant control, 915 control of chemical reac tions, 912 dilution systems, 915 general requirements, 907 humidities, 908 laboratories, 914 machining tolerance, 913 moisture content and re gain, 910. polished aurfaoes, 913 process, 907 safety, 914 static electricity, 914 ' temperatures, 908 exhaust systems, 919 Infiltration causes, 205 due to wind pressure, 205 heat equivalent, 240 beat losses, 240 latent, 241 sensible, 240 temperature difference, 210 through outside doors, 209, 240 through walls, 206 through windows, 206, 208 Inflammability, 164, 313 Inside temperature, 226, 250 Instruments, 999 Insulation. 6,575 economical pipe thickness, 587 .Meter, meters. 597 area, 597 - condensate, 597 differential, 597 flow, 597 head, 598 Nicholls' heat, 1013 orifice, 89, 598 selection, 599 velocity, 597 venturi, 1006 Metering, liquids, 90. 597 Metering steam, 90 Micromanometers, 1004 Micron, 6 Mist, 154 Moist airt 23 saturation. 49 volume, 35 pipe, 575 pipes to prevent freezing, 585 sound, 852 underground pipe, 589 Intermittently heated build ings, 243 Interstitial condensation, 201 Isobaric, 6 Isothermal, 6 J Joints, duct, 666 K Kata thermometer* 510,1010 L Laboratories, 914 Latent heat, 5, 241, 605 loss, 241 Laws of thermodynamics, 9 Leaders, 415 Leakage of air, 205 door, 207. 209, 240, 286 window, 207, 208 Light heat gain, 239 Lignite, 304, 306 Lint, 694 Liquid absorbents, 795 heat of, 5 Lithium chloride, 795 moisture. 910 content, 910,945 loss per person, 118,126 permeability, 200 regain, 910 Md, 6 Monofluorotrichloromethane, 761, 765 Motor, motors, 243, 368, 819 adjustable speed, 825 adjustable voltage, 826 alternating current, 827 capacitor type, 832 classification, 822 compound wound, 825 constant speed, 825 control, 825 control equipment for, 825, 834. 837 design limits, 820, 821 direct current, 824 electric, 819 enclosures, 841 gear, 836 dossary, 841 neat generated by, 243 multi-speed, 836 polyphase, 827, 828 rating. 834, 837 . repulsion induction, 833 selection, 819 series wound, 825 shunt wound, 824 single phase, 827 specifications, 838 speed characteristics, 828, 833 8peed ranges, 821 split phase, 833 - squirrel cage induction, 828 synchronous, 830 wound rotor, 829 Load cooling, 60, 249, 606 heating, 225, 607 maximum, 6, 360, 361 refrigeration, 249 M machine vibration. 861 ' Uanometer, 6,1003 marine (tee thip heating, venti lating, air conditioning) Mass, 6 Mbh, 488 Mean radiant temperature, 124, 515, 523, 818 XVlll N Natural draft, 379 towers, 719 Natural ventilation, 212 Sneral rules, 212 at removal, 215 Noise, noises, 843 absorptive material, 852, 855, air conditioning, system, 844 air supply opening, 857 apparatus for measuring, 844 controlling vibration, 861 t ) fJ 4 i' f: (4 ' I 2. I/ Index to Technical Data Section Noise, noises (continued) cross transmission between rooms, 860 design' room level, 847 duct sound absorbers, 852 duct system attenuation, 851 fans, 848 general problem, 844 grille, 858 kinds of, 846 levels, 847 loudness, 845 measurement, 844 plenum absorption, 857 through building construc tion, 661transmitted through ducts, 846 unit of measurement, 843 Nozzle flow, 83, 85 Nozzle installation, 96 Nurseries for premature infants, 143 air conditioning equipment, 144 air conditioning requirements, 143 ' Orifice discharge. 89 flow, 83. 85 formulas, 1007 heating systems, 452 Orsat apparatus, 1010 Outdoor air, 601, 966, 972 Outlet, outlets air supply noises, 857 ceiling, 630 duct approaches. 633 location, 631 performance, 627, 630 selection, 631 aide outlets, 634 sound absorbers, 857 types, 629 Outlet locations, 630 coding, 637 beating. 636 Outside temperature, 227, 253 Overhead distribution, 595, 993. Overhead system, 6, 595 Oxygen chambers, 149 tents, 148 therapy, 148 Ozone, 117 o Odors. 115, 117, 150, 158, 917 human body, 115 Oil, oils classification of, 307 combustion of, 312, 341 estimating consumption, 409 Oil burners. 337 boiler settings. 343 classifiation, 337 combustion adjustments, 342 combustion process, 341 controls, 344, 808 domestic, 337 furnace design, 343 gun type, 337 measurement of efficiency of combustion, 343 mechanical draft, 337 operating requirements, 341 rotary type, 338 vaporising type, 339 One-pipe system, 443, 489 gravity air-vent, 464 not water, 485 steam, 6, 443 supply riser, 6 umt heater connection. 538 vapor, 446 Opening, openings air supply noises, 857 . stacks, 218 types of, 216 00018,217 ' roof ventilators, 217 skylights, 217 windows, 217 Operating rooms, 140 conditions, 142 reducing explosion hazard, 141 sterilization of air in, 143 Operative temperature, 515 P Panel heating. 515 calculation principles, 520 electric, 520 hot water, 518 steam, 519 warm air, 518 Panel radiator, 6 Particle size chart, 155 Per cent of saturation,- 49 Perforated ceilings, 630 Perforated outlets, 630 pH value, 875, 878 Phon. 843 Physical impurities in air, 117 Physiological principles, 115, 516 Pipe coils, 506 neat emission, 506 wall, 506 Pipe, piping, 557 capacity, 458-465, 488, 977 coatings, 890 coil connections, 482 coil output, 506 cold water, 978 commercial dimensions, 557, 559 conduits for, 593 connection to heating units, 482 corrosion, 873 design, hot water system, 492 dimensions, 559 forced circulation, 494 gravity, 493 one-pipe forced circulation, 495 one-pipe gravity circulation, 495 two-pipe forced -circulation, 497 two-pipe gravity circulation, 496 economical thickness insula. tion, 587 . Pipe piping (continued) expansion, 562 fittings, 557 fitting equivalent; 458, 487 flexibility. 562 hangers, 563 heat losses, 575 hot water heating systems, 485 inside dimensions, 558 insulation prevent freezing, 585 leader sizes, 418 low temperature insulation, 584 materials, 557, 890 overhead distribution, 449. 595, 993 sizes. 453, 457 high pressure steam, 461, hot water forced circulation, 495, 497 hot water gravity circula tion, 495, 496 indirect heating units, 468 - low pressure, 459 maximum velocity, 457, 492 one pipe riser, 460 orifice systems, 452 pressure drop, 457, 460-466, 487 sub-atmospherio systems, 468 tables for, 462 two-pipe riser, 460 two-pipe vapor systems, 466 vacuum systems, 467 water supply systems, 977 steam distribution, 443. 591. 595 steam heating systems, 443 supports, 563 symbols for drawings, 17 tax. 360, 361 thread connections, 563 threads, 563 tunnels, 595 underground insulation, 592 unit heater connections, 444, 533 water supply, 977 Pitot tubes. 95, 1005 Plate cell, 856 Plenum absorbers, 857 Plenum chamber, 6 Pneumatic control systems, 805 Pollution of air. 153 Polyphase motors, 822 Ponds, 717 Potentiometer, 6 Power, 7 Precipitators, 696, 703 Pre-cooling, 611 Premature infant nurseries, 143 Pressure absolute, 7 atmospheric, 1 gages, 1003 loss, water supply piping, 980982 measurement, 1003 ' barometer, 1004 regulators, 468, 594, 808 static, 7 taps, 88 total, 7 vapor, 7 velocity, 7