American Society of Heating and Ventilating Engineers Guide, 1930 SELECTION OF FANS FOR VENTILATION Two important factors in selecting fans for ventilating systems are: efficiency (which affects the cost of operation) and noise.

American Society of Heating and Ventilating Engineers Guide, 1930 Traps and Air Valves 1.

American Society of Heating and Ventilating Engineers Guide 1931 With the ordinary sling psych'rometer which is used in measurin i3 moisture content of air, however, there is always some radiation n ^ *4 and, rnay if the wet-bulb be be considera_b_l_e_.

American Society of Heating and Ventilating Engineers Guide, 1932 )Table 16.

American Society of Heating and Ventilating Engineers Guide, 1932 Table 4.

American Society of Heating and Ventilating Engineers Guide, 1932 HEAT EQUIVALENTS OF ELECTRICITY The relation between electrical energy and heat and power is given by the following equations: 1 horsepower = 746 watts. = 33,000 ft lb per min 1 Btu = 777.64 ft lb 1 horsepower-hour = 33,000 X 60 777.64 = 2,546 Btu per hour. 1 watt-hour 1 kilowatt (kw) == 2'546 746 = 3.415 Btu per hour

<S3pfpKT - , American Society of Heating and Ventilating Engineers Guide, 1934 The sum of these values equals 0.2 4- 0.25 + 0.09 4- 0.10 4- 0.35 4- 0.12 4- 0.25 4- 0.1 = 1.46 in. which is the static pressure against which the system must operate.

American Society of Heating and Ventilating Engineers Guide, 1934 Table 2.

F riction H ead in M iuncheo per Foot op Pipe American Society of Heating and Ventilating Engineers Guide, 1934 Fig. 4.

American Society of Heating and Ventilating Engineers Guide, 1934 Page Air conditions optimum summer Air coolers 27 33, 35,148 159 Air cooling methods of 115,159 Air distribution 273 Air ducts, design of 255, 261,310 Air filters 217, 308 Air flow 57 Air leakage through walls 94 Air leakage through window and door cracks 96 Air motion, temperature and humidity 25 Air movement, measurement of 571 Air requirements 34 Air spaces 74 Air supply Air vent systems 419,449 Air washers , 54.123.147,308 Ammonia Aluminum surfaces A.S.H.V.E. codes A.S.M.E. boiler construction code 75 604 343 Analysis of coal flue gas Anemometers Aneroid barometer Anthracite coal Apartment house stokers Areas where transmission losses occur Arrangement of drive for fans Asbestos, pipe covering Atmospheric cooling 365 574 571 569 365 379 72 236 508 150 Atmospheric pollution, abatement of Atmospheric systems Automatic controls Automatic stokers 427 185 378 B Babcock's formula Baffling of boiler tubes 441 335 Banana ripening . .

American Society of Heating and Ventilating Engineers Guide, 1935 The A.S.H.V.E.

American Society of Heating and Ventilating Engineers Guide, 1935 Knowing the requirements of the system, the main points to be con sidered for fan selection are (1) efficiency, (2) speed, (3) noise, (4) size and weight, and (5) cost.

American Society of Heating arid 'Ventilating Engineers Guide, 1935 Chapter 26---Chimneys and Draft Calculations A chimney for a gas-fired boiler or furnace should be constructed in accordance with the principles applicable to-other boilers.

American Society of Heating and Ventilating Engineers Guide, 1935 Table 1.

American Society of Heating and Ventilating Engineers Guide, 1935 WYLIE, Howard M.