American Society of Heating and Ventilating Engineers Guide, 1934 EVLETH, Everett B.

American Society of Heating and Ventilating Engineers Guide, iqjj 112 -Heat Transmission Coefficients and Tables 13 TABLE Coefficients of Transmission (U) of Doors, Windows and Skylights on a wind velocity of 16 mph, and are expressed in Bln per hour per square fool per faitdiffcrence in temperature between the air inside and outside of'the door, window or skylight A .

American Society of Heating and Ventilating Engineers Guide, 1935 plant, they may add as much as 20 or 30 ft to the height.

American Society of Heating and Ventilating Engineers Guide, 1935 be installed to add water to the boiler to maintain a safe level, instead of stopping the burner.

American Society of Heating and Ventilating Engineers Guide, 1936 Quantity, of air, A.S.H.V.E. ventilation standards, 74 blow by wind, 89 measurement of, 764 necessary for ventilation, 77, 79, 95, 173 of cooling water, 206 R Radiant heaters, 503 , Radiant heating, 689, 724 Radiation, 779 by black body, 692 direct, control of, 272 equivalent direct, 150, 587. 780 heat loss by, 67, 689 by human body, 62, 67, 84, 689 load, 440 with oil burners, 498 by radiators, 521 solar, 160 curative value of, 81 effect on heat transmission, 160 occlusion of, 289 through glass, 163 through walls, 162 ultra-violet, 80 Radiator, radiators, 521, 779 A.S.H.V.E. code for. 529 column, 773 condensation rate in, 525 connections, 577, 600 control of, 272 correction rating factors, 529 effect of superheated steam, 523 enclosed, 525 gas-fired, 503 heat emission of, 521, 528 heating capacity of, 528 heating effect of, 524 for hot water systems, 598 output of, 522 ' paint, effect of, 523 panel, 778 pipe coil, 521 . ratings of, 522 selection, 528 shields. 496 types of, 521 wall, output, 522 warm air, 504 Railway air conditioning, air distribution, 257, 348 ' cooling, 259 calculation of, load, 260 capacity, 260 internal combustion engine, 259 mechanical compressor, 259 methylene chloride, 259 costs, 265 heating, 259 humidity control, 263 power supply, 264 tractive resistance, 264 temperature control, 263 ventilation, 257 Rain, as dust catcher, 296 Rates, district heating, 684 Ratings, of air cleaning devices, 300 of boilers, 438, 505 for central fan conditioning, 176 of concealed heaters, 528 of fans, 316 of furnaces, 415 of gas-fired appliances, 505 of noises, 328 of pressure reducing valves, 569 of radiators, 522 for surface coolers, 176 for unit air conditioners, 250 of unit coolers, 237 Ratings (continued), of unit heaters, 222 of unit ventilators, 233 of vacuum pumps, 550 Receivers, alternating, 555 Refrigerants, 37, 190, 779 codes for use of, 171, 242 comparison of, 44 tables of, 40, 41, 42, 43 types of, 192 Refrigerating, capacity, 43, 187 Refrigerating effect, 43 Refrigerating plant, 204, 206 compressor, 208 operating methods, 188 size of, 188 steam jet system, 189, 208 Refrigeration, characteristics, 49 curves, 48, 49 coefficient of performance, 44 camot cycle, 44 compression ratio, 46 dehumidification by, 182 efficiency, cycle, 44 ejector, 48 mechanical, 46 practical cycle, 44 losses, 45 reverse cycle, 52, 706 limiting factors, 53 systems, closed absorption, 51 mechanical, 37 open adsorption, liquid, 51 solid, 52 steam ejector, 46 various types, 37 theoretical mechanical cycle, 38 theoretical work per pound, 39 ton day of, 781 ton of, 43. 187, 781 unit of, 43, 187 Regain, control of, 714 of hygroscopic materials, 712 Registers, 779 (see also Grilles) with gas-fired furnaces, 503 with mechanical warm air furnace systems, 409 sizes, 421, 429 and stacks, 93 Reheaters, 175 Relative humidity, 8, 779 apparatus sensitive to, 271 A.S.H.V.E. standards, 74 for banana ripening, 716 in comfort zone, 70, 73 relation of dew point to, 9 control of, 282 ' effect on sound, 338 in industrial plants, 711 of libraries, 720 for processing, 718 in public buildings, 73 . in residences, 526 from water pans, 526 Research residence, 407, 427 Residences, air distribution in, 346 - ' humidification of, 414, 526 , oil burners for, 494 conversion burners, 504 ' stokers for, 488 * Resistance, of bright metallic surfaces, 125 of building materials, 107, 665 in ducts, 381 of exhaust systems, 382 of filters, 407 of insulators, 107, 665 of sound-insulating materials, 334, 336 thermal, 780 Resistor, 700, 703 '^y Alphabetical Index to Technical Data Section Restaurants, tobacco smoke in, 77 water supply to, 651 Return, dry, 774 pipe, capacity, 564 wet, 782 Reverse cycle of refrigeration, 52, 706 Ringelmann chart, 768 Rock wool insulation, 662 Roof, roofs, coefficients of transmission of. 122 conductivities of, 109 solar radiation on, .160, 161 ventilator, 92, 779 Room dryers, 728 S Salts in cooling water, 205 Saturation, fiber point, 732 Scale, in boilers, 447 centigrade, 762 on equipment, 205 Fahrenheit, 762 - in pipe, 626 Rgaumur, 762 School, schools, air distribution in, 348 air flow necessary in, 96 optimum air conditions, 71 stokers suitable for, 492 temperature of, in winter, 144 ventilation in, 71 Scrubbers, 295, 301 air, 201 Sensible heat, 179 of air, 10 loss, 82 of water, 30 series wound motor, 747 Settling chamber, 294 Sheet metal, for ducts, 368, 379 Shingles, air leakage through, 133 shunt wound motor, 747 Silica gel, regain of moisture of, 712 system of adsorption, 183 Silicosis, 290 single phase motor, 749 Sizes of pipe (see Pipe, Sizes) Skylights. 92. 125 Sling psychrometer, 766 Smoke, 287, 779 abatement of, 291 measurement of, 768 recorders, 768 tobacco, 77 Solar heat, 160 Sound, 325 absorption coefficients, 329 . control, 325 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, 560 Specific density, 3 Specific gravity, 2, 779 of fuel gas. 454 Specific heat, 3, 779 mean, of water vapor, 3 of water, 30 Specific humidity, 8 Specific volume, 3, 779 of saturated steam. 26 Split phase motor, 750 Split system, 780 air conditioning equipment, 231 automatic control of, 275 central fan, 387 Spray, booths for painting, 378 cooling, ponds. 208, 210 efficiency of, 209 towers. 209, 210 distribution of, 213 dryers, 728 generation of, 213 humidifiers. 214 type of central station system, 170 water coolers, 193 Square foot of heating surface, 780 Stack, stacks, 93, 417 . effect, 90 height, 780 size of, 95, 420, 429 system with registers, 93 wall, 420 Stairways, 139 Standards.

American Society of Heating and Ventilating Engineers Guide, 1936 14 T able 5.

American Society of Heating and Ventilating Engineers Guide, 1936 A splitter facing the direction of air flow cuts off the air and delivers the desired amount to the branch. , ; 11 Why does a wide, shallow duct offer more resistance to the flow of air than does a square duct of equal cross-sectional area?

American Society of Heating and Ventilating Engineers Guide, 1936 their normal rating.

American Society of Heating and Ventilating Engineers Guide, 1936 Fig. 4.

American Society of Heating and Ventilating Engineers Guide, 1936 MILLER, Robert E.

American Society of Heating and Ventilating Engineers Guide, 1937 1.

of and 1937"American Society Heating Ventilating Engineers Guide, The term fly-ash is usually applied to the extremely small particles 0f ash, and the term cinder to the larger particles of coke and ash which -discharged with the gases of combustion from burning coal.

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American Society of Heating and Ventilating Engineers Guide, 1937 vacuum system is illustrated.

American Society of Heating and Ventilating Engineers Guide, 1937 SYMBOLS FOR HEATING, VENTILATING AND AIR CONDITIONING DRAWINGS5 X.