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Vol. 5, No.

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American Society of Heating and Ventilating Engineers Guide, 1936 Current Type Table 1.

American Society of Heating and Ventilating Engineers Guide, 1936 1 Btu 1 watthour 1 mean calorie 1 kilowatt (1000 watts) 1 horsepower 1 boiler horsepower 777.S ft-lb = 0.293 watthours 252.02 mean calories 2.655.2 ft-lb . _ 3.415 Btu 3600 joules 860.648 mean calories ( 0.003968 Btu = \ 3.085 ft-lb I 0.0011619 watthours 1.3405 horsepower 56.92 Btu per minute 44,252.7 ft-lb per minute 0.746 kilowatt _ 42.44 Btu per minute 33,000 ft-lb per minute 550 ft-lb per second = 33,471.9 Btu per hour Weight and Volume 1 gal (U.

American Society of Heating and Ventilating Engineers Guide, 1937 TYPES OF UNITS Several types and designs of air conditioning units in production and proposed are available for selection.

- American Society of Heating and Ventilating Engineers Guide, 1937 their normal rating.

American Society of Heating and Ventilating Engineers Guide, 1937 90-deg ells but occasionally fittings of other angles are used, and in such cases the length of the diagonal offset will be found as shown in Fig. 3j Dirt pockets, desirable on all systems employing thermostatic traps should be so located as to protect the traps from scale and muck which will interfere with their operation.

Temperature Control Penn Electric Switch Go.

American Society of Heating and Ventilating Engineers Guide, 1937 McLEAN, James E.

Heating Ventilating Air Conditioning Guide 1938 Table 3.

Heating Ventilating Air Conditioning Guide 1938 7 What instruments and apparatus are required for determining the pollen concentration in air by means of the settling method?

Heating Ventilating Air Conditioning Guide 1938 connecting of loads on the power line and they are likely to vary with different power companies. 11 In controlling direct current motors what two methods are used, what speed ranges are obtained, and what is the relative efficiency of each method?

Heating Ventilating Air Conditioning Guide 1938 Fig. 4.

Heating Ventilating Air Conditioning Guide 1938 B Page Babcock & Wilcox Company, The, 85 Liberty St., New York, N.