American Society of Heating and Ventilating Engineers Guide, 1932 TRAPS, Return Barnes & Jones 776 Bishop & Babcock Sales Co., The 777 Julian d'Este Co. 781 C.

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American Society of Heating and Ventilating Engineers Guide, 1934 Chapter 5--Heat Transmission C E IL IN G to R oof R afters) TYPE OF (A pplied D irectly /Sheathing assumed % in., thick. 91

American Society of Heating and Ventilating Engineers Guide, 1934 Ammonia, probably the best known refrigerant, has the disadvantage of being toxic, and under certain circumstances, explosive, corrosive, and irritating, even in smali quantities in the atmosphere.

American Society of Heating and Ventilating Engineers Guide, 1934 ments.

American Society of Heating and Ventilating Engineers Guide, 1934 Table 5.

American Society of Heating and Ventilating Engineers Guide, 1934 Table 10.

American Society of Heating and Ventilating Engineers Guide, 1934 become thoroughly frozen the wet-bulb temperature will rise .to normal.

American Society .of Heating and Ventilating'Engineers Guide, 1934 eqiiatiOn is.'

American Society of Heating and Ventilating Engineers Guide, 1935 Chapter 4--Natural Ventilation in al!

of andAmerican Society Heating Ventilating Engineers Guide~7935 where L -- Loudness in db; / = Intensity.

American Society of Heating and Ventilating Engineers Guide, 1935 V. i --1 t 1 . jf \ Q. >, . . >> ">% Q. a. > Q.

of and 1936American Society Heating Ventilating Engineers Guide, mately the same value in July, August and September, and although the average monthly temperature did not vary much, the prevailing outdoor temperature ranged from 70 F to 99.5 F.

' American Society of Heating and Ventilating Engineers Guide, 1936 In exhaust ventilating systems where the air column moves toward the fan, noise due to the higher tip speeds and outlet velocities will not be so readily transmitted back through the air column to the building as when the air column is moving toward the rooms.

American Society of Heating and Ventilating Engineers Guide, 1936 ceiling of the equipment room, or the inner walls of the ducts, with sound- absorptive materials.