rotational %i legtslaV, the de ns ia Use nixed at at Cotea. ishington. ihen, the C.

H W B B -H 0!

f i;)'Sproying.

Air Hygiene Foundation of America, 4400 Fifth Avenue, Pittsburgh, Pa.

American Society of Heating and Ventilating Engineers Guide, 1930 Table 21.

American Society 0/ Heating and Ventilating Engineers Guide, 1930 .

American Society of Heating and Ventilating Engineers Guide, 1930 Table 3.

American Society of Heating and Ventilating Engineers Guide, 1930 RALSTON, Louis T.

American Society of Heating and Ventilating Engineers Guide, 1932 temperature and velocity of air movement, and the relationship of this error to these factors is shown in a papier entitled The' Temperatures of Evaporation of Water into Air, presented by W.

/ !

American Society of Heating and Ventilating Engineers Guide, 1934 100 per cent,-,the dry-bulb exceeds the wet-bulb, and. the wet-bulb exceeds the dew-point temperature.

American Society of Heating and Ventilating Engineers Guide, 1934 Positive Acting: A thermostat, humidistat or relay which maintains its valve or damper either wide open or fully closed, that is, when there is always full force or none in its branch line.

American Society of Heating and Ventilating Engineers Guide, 1934 RELATIVE HEATING COSTS A comparison of the relative cost of heating with different fuels can be made with even a fair degree of accuracy only when there is a full knowledge of the equipment which will be used with each fuel, and the efficiency with which each will be operated.

American Society of Heating and Ventilating Engineers Guide, 1934 perature of the water in the seventh radiator will be 170 F, and, according to Table 3, Chapter 6, of the 1933 Guide, the heat dissipation of these two radiators will be to each other as 868 is to 617, or as 140 is to TOO, and therefore if the last radiator is to dissipate as much heat as the first, its size must be 40 per cent larger.

American Society of Heating and Ventilating Engineers Guidi * 1935 Chapter 18--Sound Control Table 4.