American Society of Heating and Ventilating Engineers Guide 1937 Table 1.

American Society of Heating and Ventilating Engineers Guide, 1937 drier decreases as a transfer of heat to the material being dried takes place Where part or all of the heat is supplied by steam coils or other means within the drier itself, the drier is known as a constant temperature drier Driers using little air for heating medium with a high temperature drop are difficult to hold at uniform temperatures; the more air used, the easier it is to secure accurate control of temperature and humidity.

American Society of Heating and Ventilating Engineers Guide, 1937 Power, Heat, and Work 1 ton refrigeration Latent heat of ice 1 Btu 1 watthour 1 mean calorie 1 kilowatt (1000 watts) 1 horsepower 1 boiler horsepower -{12,000 Btu per hour 200 Btu per minute = 143.33 Btu per pound 777.5 ft-lb 0.293 watthours 252.02 mean calories ( 2,655.2 ft-lb I 3.415 Btu J 3600 joules 1 860.648 mean calories !

H e a t in g V e n t il a t in g A ir Co n d it io n in g G u id e 1938 Table 6; Properties of Saturated Water Vapor with Air, 0 F to 200 Fa (Part 11,'Continued) Temp., f; Pbebsurb or saturated 1 Vapor la. of Hg Lb per Sq la

Heating Ventilating Air Conditioning Guide 1938 Table 3.

Heating Ventilating Air Conditioning Guide 1938 The resistance of a well-designed unit filter of the adhesive impinge ment type usually depends upon the velocity at which the air is handled and upon whether the unit is clean or dirty.

Heating Ventilating Air Conditioning Guide 1938 If r, the mechanical resistance, is very small, formula 1 may be written 1 ,,* no % where n0 is the natural frequency of the machine upon the elastic pad, In most cases of design of resilient machine mounting the effect, of frictional resistance is small, and Equation 2 may be used.

Heating Ventilating Air Conditioning Guide 1938 (3) Manual contactor or reduced voltage compensator with overload and low voltage release. (4) Drum switch equipped with latch coil to give low voltage release. 2.

Heating Ventilating Air Conditioning Guide 1938 Illinois Engineering Co., 1114-1115 VALVES, Gate VALVES, Radiator, Electric Jenkins Bros., 1159 Milwaukee Valve Co., 1118-1119 Taco Heaters, Inc., 1008-1009 Warren Webster & Co;, 1124-1147 York Ice Machinery Corp., 877 American Brass Co., 1062-1063 American Radiator Company, 884- 885, 940-943, 1061 Consolidated Ashcroft Hancock Co., Inc., 1013 Motor Operated Barber-Colman Co., 1138-1139 Bristol Company, The, 1012 Julien P.

Officers and List of Chapters, 1937-38--(Continued) Western Michigan Headquarters, Grand Rapids.

Heating Ventilating Air Conditioning Guide 1938 HARVEY, Alexander D.

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Heating Ventilating Air Conditioning Guide 1939 relationship is, that for a fixed relative humidity there is substantially a constant difference between the dew-point and the dry-bulb temperature over a considerable temperature range.

Heating Ventilating Air Conditioning Guide 1939 gases, such as sulphur dioxide and sulphuric acid mist, which are dis charged with the gases of combustion.

Heating Ventilating Air Conditioning Guide 1939 tures of the various parts of a wall are controlled by the type and amount of insulation used and the vapor densities in the corresponding sections are controlled by the type of vapor barriers installed.