u/ American Society of Heating and Ventilating Engineers Guide, 1937 Table 6.

Heating Ventilating Air Conditioning Guide 1938

Heating Ventilating Air Conditioning Guide 1938 A'fg OF,. -- m = Cpa (/ -- t<) + C^W (t -. t') (9a) and using = 0.24 and Cpj -- 0.45 where A'fg (lVt. -- HO = (0.24 + 0.45HO (t - <0 (9b) h'iz = latent heat of vaporization at f, Btu per pound.

Heating Ventilating Air Conditioning Guide 1938 Table 11.

Heating Ventilating Air Conditioning Guide 1938 Stokers also may be. classified according to their size based upon coal feed rates.

Heating VentiIiAting Air Conditioning Guide 1938 the use of the welding process.

Heating Ventilating Air Conditioning Guide 1938 Heating The normal air conditioning unit derives its heating function from a heating coil, usually of the non-ferrous finned tube type supplied with either steam or hot water.

T ' ^rT Heating Ventilating Air Conditioning Guide 1938 found to be 0.622 sq ft.

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 -.

Heating Ventilating Air Conditioning Guide 1939 often used in ventilation work as an index of odors of human origin, but the information it affords rarely justifies the labor involved in making the observation2'3.

Heating Ventilating Air Conditioning Guide 1939 H2 as xs ta .

Heating Ventilating Air Conditioning Guide 1939 Chapter 13, Heating Boilers dampers, cleanouts and trimmings.

Heating Ventilating Air Conditioning Guide 1939 TABLES FOR PIPE SIZING2 Factors determining the capacity are as follows: 1.

Heating Ventilating: Air Conditioning Guide 1939 e.

Heating Ventilating Air Conditioning Guide 1939 This heat gain is then used as a credit against the heat loss calculation In general, however, the design for heating disregards these gains as f most cases these values are not a continuous or uniform source of heat anri the heating system must be adequate to maintain the required tempera1 ture at all times including nights, Sundays and holidays, when the space is not in normal use.