Document ymeNBMzpdkyB57NmDxJdRewNE

1939Heating Venturing Air Conditioning Guide Plumbing fixtures, 801 Pneumatic control system, 702 Pneumonia-, 50, 617, 623, 625 Pollen. 623 Pollution of air, 81 Polyphase motors, 723 Ponds, cooling, 531 Positive-acting control, 702 Post-operative pneumonia, 617 Potassium permanganate, 532 Potentiometer, 842 Power, 842 conversion equations, 849 electric, 766 supply for controls, 702 railway air conditioning, 631 Precipitators, dust, 545 Premature infants, 618 humidity of, 619 mortality of, 620 requirements of,. 619 Pressure, pressures, . absolute, 835 air, measurement of, 827 atmospheric, 823, 836 for atomisation, 522 automatic control, 701 barometric, 189, 835 basic. 3 controllers, 701 conversion equations, 849 drop. 584, 807 drop through refrigerant pipe, 480 dynamic, 838 gage, 824 loss in copper pipe, 345, 480loss through ducts, 581, 661 measurement of, 823 partial, Dalton's law of, 1 of saturated vapor, 12 static, 843 steam, in direct heating, 781 drop, 284, 310, 315 initial, 310 in orifice systems, 297 saturated, 28 in sub-atmospheric systems, 295 total, 844 vapor, 31, 845 velocity, 845 water, 27, 805 Prime surface, 842 Processing, 639 cooling systems, 463, 639 industrial temperatures and humidities for, 640 of textiles, 644 unit heaters, 441 Propeller fans, test code for, 652 Psychrometer, 842 sling, 830 Psychrometrfc, chart, 25, 58. 59, 60, (back cover) for drier, 672 explanation, 25 tests, 57 Pulmonary disturbances, 623 Pump, pumps, centrifugal, 340 characteristics, 187 circulating, 339 condensation return, 299 heat, 466, 765 vacuum, 298 Pyrometer, 826, 842 mercurial, 826 optical, 826 radiation, 826 thermo-electric, 826 Q-R Quality, of air, 67, 68, 69 impaired by recirculation, 81 - Quantity, of air, measurement of, 827 necessary for ventilation, 68, 69,: 72, 166, 627 of cooling water, 529 Radiant heaters, 759 Radiant heating, 769 physical and physiological factors, 769 Radiation, 842 by black body, 775 drying with, 665 equivalent direct, 311 heat loss by, 74, 770 by human body, 74, 770 load, 258 of pipe, 738 by radiators, 269 solar, 149, (see also Solar Heat) occlusion of, 82 through walls, 150 ultra-violet, 78, 80 Radiator, radiators, 269, 842 A.S.H.V.E. code for, 277 column, 836 concealed, 837 condensation rate in, 273 connections, 326, 854 control of, 703 correction rating factors, 277 effect of superheated steam, 271 enclosed, 274 gas-fired, 228 heat emission of, 269 heating capacity of, 270 heating effect of, 272 for hot water systems, 846 output of. 270 paint, effect of, 271 panel, 827 pipe cofi, 269 ratings of, 264 recessed, 842 selection, 276 tube, 829 types of, 269 wall, output, 270 warm air, 228 Railway air conditioning, 627 air distribution, 578, 628 cleaning, 629 cooling equipment, 629 calculation of, load, 637 capacity, 630 costs, 635 heating, 629 humidity control. 630 power requirements, 631, 632. tractive resistance, 633 temperature control, 631 ventilation, 627 Raoults law, 487 Refrigerants, 85, 842 ammonia, 86 carbon dioxide, 39 dlchlorodifluoromethane,' 37 lithium chloride, 44, 45 methyl chloride, '88 monofluorotrichloromethane, 40 water, 41 Refrigerating, capacity, 469 Refrigerating plant, 463 centrifugal, 473 compressor, 464, 530 operating methods, 479 size of, 469, 479` steam jet system, 471, 530 types of, 465 XX Alphabetical Index to Technical.Data Section Refrigeration, characteristics, 475 curves, 474, 475 coefficient of performance, 469 Carnot cycle, 469 compression ratio, 471 control of, equipment, 717 dehumidification by, 464 efficiency, cycle, 469 ejector, 471 mechanical, 471 losses, 470 mechanical, 466 pipe sizing, 478 discharge, 480 liquid, 481 suction, 482 practical cycle, 469 -. reverse cycle, 766 . limiting factors, 765 systems, absorption, closed, 487 centrifugal, 473 mechanical, 490 steam ejector, 471 various types, 463 theoretical mechanical .cycle, 467 theoretical work per pound, 468 ton of, 469, 844 ton day8 of, 844 unit of, 470 Regain, control of, 642 of hygroscopic materials, '644 Registers, (see also Grilles) with gas-fired furnaces, 228 ' with gravity furnace systems, 387 with mechanical warm air furnace systems, 403 selection of, 387 sizes, 387, 895 temperature, 409 velocity through, 409 Relative humidity, 9, 842 apparatus sensitive to, 700 in comfort zone, 62, 66 relation of dew-point to, 9 control of, 700 in industrial plants, 640, 642 for processing, 640 in public buildings, 65 in residences, 409 from water pans, 409 Relays, 701 Relief valves, 356 Repulsion motors, 722, 723 Research residence, 894, 411 Residences, air distribution in, 402 automatic fuel burning equipment, 207 conditioning units, 292, 467 control systems, 405, 714 gas heat, 226 humidification of, 409 oil burners for, 218 requirements in, 411 steam consumption, 246 -stokers for, 210 Resistance, of bright metallic surfaces, 92 of building materials, 95 in ducts, 683, 661 of exhaust systems, 661 of filters, 402 of insulators, 95 ' thermal, 844 . thermometer, 826 Resistor, 758 Respiratory diseases, 625 Restaurants, tobacco smoke, in, 68 water supply to, 821 Return, dry, 838 mains, 842 pipe, capacity, 316 reversed, 842 wet, 845 Reverse cycle of refrigeration, 489, 765 Reversed return system, 842 Reynolds number, 190 Ringelmann chart, 832 Rock wool insulation, 98, 745 Roof, roofs, coefficients of transmission of, 112 conductivities of, 99 solar radiation on, 150, 161, 152 ventilator, 843 Room absorption correction charts, 575 Room control, 703 . '' S Salts in cooling water, 627 Saturated air, 843 Saturation, fiber .point, 669 Scale, in boilers, 266 Centigrade, 825 on equipment, 527 Fahrenheit, 826 in pipe, 380 Reaumur, 825 School, schools, air flow necessary in, 68 optimum air conditions. 63 temperature of, in winter, 132 ventilation in, 68 Scrubbers, 517, 546 Self-contained control system, 702 Sensible heat, 146. 843 of air, 12 loss. 71 of water, 31 Series wound motor, 719 Sheet metal, for duets, 698, 659 Shingles air leakage through, 121 Shunt wound motor, 719 Silica gel, with oxygen chambers,-624 regain of moisture of, 644 silicon dioxide, 41 equilibrium conditions, 42 system of adsorption, 41, 42, 43, 485 Single phase motor,' 722 Sizes of pipe, (see Pipe Sizes) Skin diseases, 625 Sling psychrometer, 830 Slip-ring wound motors, 726 Smoke, 77, 843 abatement of, 82 measurement of, 832 recorders, 832 tobacco, 68 Smokeless arch, 843 Solar heat, 149 absorption coefficients, 168 effect of, awnings, 164 latitude, 150 intensity chart, 148 occlusion of, 82 radiation, factors, 162 through walls, 150 time lag, 153 Solenoid valves, 701 Sound, 601, (see also Noise) absorption coefficients, 607 control, 426, 601 duct lining factor, 611 effect on duct design, 585 insulation of, 607 measurement of, 602 unit of, 601 XXI