Industrial Hygiene Importance ol Dust By N.

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 PIPE SIZES The determination of pipe sizes for a given load in steam heating depends on the following principal factors: 1.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 DAMAGE CAUSED BY DUST Dust may cause damage in many ways, but usually. it must first lodge on a surface.

# f s.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 FURNACES Furnaces for mechanical warm air systems may be made of cast-iron, steel, or alloy.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Radiator {continued) effect of superheated steam. 257 * enclosed. 260 gas-fired. 215 heat emission of. 253 heating effect. 257 heating up. 259 output of. 256 panel. 841 recessed. 842 .* selection, 263 tube. 843 types of. 253 warm air. 215 Railway air conditioning, 709 air distribution, 710 humidity control. 712 summer systems. 711 temperature control, 712 ventilation. 709 winter systems, 711 'Reciprocating compressors, 484 Recooling, 413 Reflective insulation, 88 Refrigerant, refrigerants, 481. 842 ammonia, 480carbon dioxide^ 484 dichlorodifluoromethane, 482 feeds. 514 methyl chloride. 483 monofluorotrichloromethane, 486 pipe sizes, 497 water, 486 Refrigeration, 479 absorption systems. 490 control. 658 equipment selection. 503 ice systems, 502 mechanical. 479 reverse cycle, 505, 796 ton of, 843 day of, 843 types of compressors, 484 Regain, 721 control of, 720 Register, registers, 595 (see Grilles) noises, 603 railway car, 710 selections. 369 types of, 607 -Rectangular duct equivalents, 614 ,, Reheat, 413 Reheating, 411 Relative humidity. 19, 113, 842 raeasu/ement of, 680 Repulsion induction motors, 686 Residence, control systems, 668 air conditioning, 669 . coal-fired heating plant, 668 domestic hot water supply, 668 cooling methods, 391 gravity furnace system, 365 .. heat loss problems, 135 hot water heating system, 309 humidity requirements, 390 mechanical furnace system, 379 steam heating system, 267 Resistance thermometers, 673 Resistors. 790 * Return mains, 310, 842 Reverse cycle refrigeration.'505, 796 Reversed return system, 310, 842 Roof, roofs, heat flow through, 145 time lag of solar radiation. 147 ventilators, 766, 842 Room, control, 649 noise level 632 operating, 697 Rotary drier, 742 Rotary oil burner, 208 Run-around system, 417 S Saturated air, 9, 842 Saturation. 842 degree of. 19,. 838 pressure, 842 Secondary air. 162 Sectional boiler, 235 Self-contained conditioner, 443 control systems, 648 humidifiers. 542 Sensible cooling, 417 , Sensible heat. 842 loss. 51. 123 Series wound motors. 683 Settling chambers. 577 Sheet metal gages, 624'.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 Table 9.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 records to be sure that they do not include energy or fuel used for other purposes than heating the building.

HEATING VENTILATINC AIR CONDITIONING CUIDE 1942 Table 1.

HEATING VENTILATING AIR .CONDITIONING GUIDE 1942 Table 9.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 bulb temperature of the air, the relative velocity of air and water, and the duration of contact of the air with the water, a much larger quantity of heat may be dissipated in a given area with the spray pond than with the cooling pond, because of (1) the speed with which the drops travel as they are propelled into the air and fall back into the water basin, (2) the increased wind velocity at a point above the surrounding structures or terrain, (3) the increased volume of air used, and (4) the vastly increased area of contact between air and water.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 .W.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1943 Table 2.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 As much as 350 gal of oil per hour can be burned in these units, and frequently they are arranged in multiple on the boiler face, from two to five burners to each boiler.

HEATING .