Insulation The Barrett Company 40 Rector Street, New York, N.

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Air System Equipment *?

IMVUlWt.. . , r. 1JANIEL J"i. 15Ur OETT, INC

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Air Conditioning Central Systems Niagara Blower Company General Sales Office: 6 East 45th Street, New York-17, N.

Air Conditioning Unit Hoatora and Coolers John J.

CHAPTER 30 s$ir <2)iitrilution Standards for Satisfactory Conditions, Definitions, Mechanics of Air Distribution, Types of Supply and Return Openings, Outlet Locations, 'Return, and Exhaust Intakes, Specific j4p- . plications.

Insulation windows Libbey* Owens* Ford Glass Company Nicholas Building, Toledo 3, Ohio THERMOPANE Insulating Glass L-O-F Thermopane is a transparent factory-fabricated insulating glass unit composed of two or more panes of glass separated by in. or H in. of dehydrated captive air, hermetically sealed at the edges in the factory with a metal-to-glass bond.

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i Air System Equipment Fans and Blowers Westinghouse Electric Corporation Slurlevanl Division VENTILATING SETS Rexvane* Ventilating Sets, with radial blade wheels designed for medium speed operation, are suitable for ventilating, fume exhausting and air conditioning.

66 CHAPTER. 3 : 949 Guide weights, namely,' 18.016/28:966 = 0.6220; hence Equation 13 can be written ' ' ' W = 0.6220 P* P - V- '......... . . ' (14) Now, even if it is assumed that both the dry air and the water vapor behave' like perfect gases, it does not follow that at saturation the partial pressure of the water vapor can be put equal to the saturation pressure of pure water at the temperature of the mixture because: (1) the coexisting liquid (or solid) phase is not pure water but contains a small amount :of dissolved air, and (2) the coexisting liquid (or: solid) phase .has to. support the ob served pressure p and not just the saturation pressure p, of pure, water.

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Air System Equipment JgmftaS?