Document pmO8GrDVMaD6dRoYZDg57nMxE

1937of andAmerican Society Heating Ventilating Engineers Guide, Pyrheliometer, 160 Pyrometer, 779, 795 mercurial, 779 optical, 779 radiation, 779 thermo-electric, 779 O Quality, s of air, 73, 79 ` A.S.H.V.E. ventilation standards, 81 impaired by recirculation, 83 ' Quantity, of air, A.S.H.V.E. ventilation standards. 81 blow by wind, 85 measurement of, 780 . necessary for ventilation, 74, 79, 91, 189 of cooling water, 225 R Radiant heaters, 515 Radiant heating, 705 Radiation, 795 by black body. 708 equivalent direct. 150, 601,^796 heat loss by, 65, 705 by human body, 65, 76, 705 load, 452 with oil burners, 510 by radiators, 533 sol&r, 160 effect on heat transmission, 160 occlusion of, 297 through glass,;63 through walls,) 162 ultra-violet, 79 Radiator, radiators, 533, 795 . A.S.H.V.E. code for, 541 column, 789 condensation rate in, 537 connections, 590, 616 control of, 279 correction rating factors, 541 effect of superheated*steam, 535 enclosed, 537 gas-fired, 515 heat emission of, 533, 540 heating capacity of, 540 heating effect of, 536 for hot water systems, 614 output of, 534 paint, effect of, 535 panel, 794 pipe coil, 533 ratings of, 534 selection, 540 types of, 533 wall, output, 534 warm air, 504 Railway air conditioning, air distribution, 360, 399 cooling, 401 calculation of, load, 402 capacity, 402. internal combustion engine, 401 mechanical compressor, 401 methylene chloride, 401 costs, 407 heating, 401 humidity control, 405 power supply, 406 tractive resistance, 406' temperature control, 405' ventilation, 399 Rain, as dust catcher, 304 Rates, district heating, 700 Ratings. of air deaning devices, 308 of boilers, 448, 517 for centra] fan conditioning, 193 of concealed heaters, 540 . of fans, 324 of furnaces, 437 of gas-fired appliances, 517 of noises, 334 of pressure redudng valves, 583 of radiators, 534 for unit air conditioners, 193 of unit coolers. 255 of unit heaters, 241 of unit ventilators, 251 of vacuum pumps, 562 . Receivers, alternating. 568 Refrigerants, 35, 208, 795 codes for use of, 187, 259 comparison of, 42 tables of. 36. 38. 40, 41 types of, 208 Refrigerating, capadty, 41, 203 Refrigerating effect, 41 Refrigerating plant, 223, 24 compressor, 226 operating methods, 204 size of, 204 . steam jet system, 20a, 226 Refrigeration, characteristics, 47 curves, 46, 47 coeffident of performance, 42 camot cyde, 42 ( compression ratio, 44 control of, equipment, 293 dehumidification by, 198 effidency, cyde, 42 ejector, 46 mechanical, 44 practical cyde, 42 losses. 43 reverse cycle, 50, 722 limiting factors, 51 systems, closed absorption. 48 ^ mechanical. 35 open adsorption, liquid, 49 solid, 49 steam ejector, 44 various types, 35 * theoretical mechanical cyde, 37 theoretical work per pound, 39 ton day of, 797 ton of, 42, 203, 797 unit of, 42, 203 * Regain, control of, 730 of hygroscopic materials, 728 . Registers, 795, (see also Grilles) with gas-fired furnaces, 515 with mechanical warm air furnace systems, 431 , selection of, 415 ' sizes, 415, 423 vdodty through, 435 Reheaters, 89 Relative humidity, 9, 795 apparatus sensitive to, 277 A.S.H.V.E. standards, 81 for banana ripening, 732 . in comfort zone, 68, 71 relation of dew point to, 9 control of, 277 in industrial plants, 727 of libraries, 736 for processing, 734 . in public buildings, 71 in residences. 538* from water pans, 538 Relays, 277 Research residence, 423, 440 ., ' Alphabetical Index to Technical Data Section Residences, . air distribution m, 431 - conditioning units, 561 control systems, 291 humidification of, 439, 538' oil burners for, 506 conversion burners, 516 stokers for, 500 Resistance, of bright metallic surfaces, 104 of building materials, 107 in ducts, 393 of exhaust systems, 394 of filters, 430 of insulators, 107 thermal. 797 Resistor, 716, 719 Restaurants, tobacco smoke in, 75 water supply to, 667 Return, dry, 791 pipe, capadty, 578 wet, 798 Reverse cyde of refrigeration, 50, 722 Reynolds number, 468 a Ringelmann chart, 784 Rock wool insulation, 678 Roof, roofs, coefficients of transmission of, 124 - conductivities of. 111 solar radiation on, 160, 161 ventilator, 88, 795 Room absorption correction charts, 357 Room control, 279 S Salts in cooling water, 223 . Saturation, fiber point. 743 Srale, in boilers, 460 Centigrade, 778 on equipment, 223 Fahrenheit, 778 in pipe, 642 * Reaumur, 778 School, schools, air flow necessary in, 92 optimum air.conditions, 66 stokers suitable for, 504 temperature of, in winter, 144 ventilation in, 69 Scrubbers, 303, 309 air. 217 Self-contained control system, 278 Sensible heat, 195 of air, 12 loss, 76 of water, 31 Series wound motor, 761 Settling chamber, 302 Sheet metal, for ducts, 380, 391Shingles, air leakage through, 133 Shunt wound motor, 761 ' Silica gel, regain of moisture of, 728 . system of adsorption, 199 Silicosis, 298 Single phase motor, 764 Sizes of pipe (see Pipe, Sites) Skylights. 88. 127 Sling psychrometer, 782 Smoke, 295, 795 abatement of, 299 measurement of, 784 recorders, 784 tobacco, 75 Solar heat, 160 Solenoid valves, 277 Sound, 333 absorption coefficients, 329 ' control, 333 duct lining factor, 342 effect on duct design, 367 effect on humidity on, 338 effect of temperature on, 338 insulation of, 330 intensity, 325 measurement of, 326 - in steam heating systems. 573 Specific density, 3 Specific gravity, 2, 796 of fuel gas, 466 Specific heat, 3, 796 of air, 5 mean, of water vapor, 3 of water. 31 Spedfic humidity, 8 Specific volume, 3, 796 of saturated steam, 31 Split phase motor, 765 Split system, 796. air conditioning equipment, 249 automatic control of, 281 central fan, 169 _ ' Spray, booths for painting, 390 cooling, ponds, 227 effidency of, 227 towers, 228 distribution of, 221 generation of, 221 humidifiers, 222 type of central station system, 186 water coolers. 211 ' Square foot of heating surface, 796 Stack, stacks, 89, 411 effect, 86 height, 796 size of. 91. 414, 423 system with registers, 89 wall, 414 Stairways, 139 Standards, air conditioning, 55, 81 A.S.H.V.E. codes and standards, 81 for pipe, 625 for ventilating industrial plants, 298 for welding, 636 Steam, 402, 796 coils. 256 condensing rates, 536 consumption for buildings,.526 flow, Babcock's formula, 571 heat content of, 23 as heat source, 719 heating systems, 545, 796 air-vent, 545, 549, 579, 580 t- atmospheric, 553, 583, 591 classification, 545 condensation return pumps, 562 connections (see Connections, Fittings) corrosion of, 642 design of, 545, 571 dirt pockets, 598 district heating, 687 dripping of, 598 electric, 719 equivalent length of run, 575 gravity systems, 545 one-pipe, 545, 549, 579, 591 two-pipe, 549, 580, 591 with high-pressure steam, 583 mechanical, 545 orifice, 559. 573, 583, 591 pipe, 571, (see also Pipe) capadty, 574, 576 sizes, 573, 576 pressure drop in, 548. 558 sub-atmospheric, 557, 564, 573, 583, 591 types of, 545 vacuum, 554, 563, 566, 582 XIX