American Society of Heating and Ventilating Engineers Guide, 1936 6 Use the degree-day method of computing the amount of coal required to ' heat an office building located in Cleveland, Ohio, assuming that the net, heated space is 30,000 cu ft.

American Society of Heating and Ventilating Engineers Guide, 1936 SWANSON, Rolf G. (5 1935), 324 Walnut St.

American Society of Heating and Ventilating Engineers Guide, 1937 ht -- hi = the increase in the heat content of the air-water vapor mixture in passing through the apparatus, Btu per pound of dry air = 0.24 (<, - ti) + W, (1059.2 + 0.45 /,) - Wi (1059.2 + 0.45/,) The net quantity of heat added to or removed from air-water vapor mixtures in air conditioning work is frequently approximated by taking the differences in total heat at exit and entrance.

American Society of Heating and Ventilating- Engineers Guide, 1937 cfm 200 X 13.5 (30.85 - 20.35) 257 cfm per ton. 257 X (76.0 - 14.4) X 1044 175.2 Btu. 13.5 X 7000 )Check: L = 200 - / 257 \ X 0.2415 13.5 X 5 177.0 Btu. 9 Why is it possible for a reversed cycle refrigeration unit to show a better . performance in heating operation than when operating during the cooling season?

D iam eter ,s>f ' Branch Pipe M a in a n d B ranch Pipes for E q u a l F r ic tio n per F oot of L en g th (20 to 100 Per Ce n t Ca p a c ity ) American Society of Heating and Ventilating Engineers Guide, 1937 8S $ 370 ,id d Chapter 20-^Air Duct Design maximum velocities with good construction and design may be as high as 2000 or 2200 fpm in main ducts, with suitable reduction in branches and outlets.

American Society of Heating and Ventilating Engineers Guide, 1937 FURNACES Furnaces for mechanical warm air systems may be made of cast-iron steel, or alloy.

American Society of Heating and Ventilating Engineers Guide, 1937 tensity and is analogous to the total dynamic head in a water works system.

American Society of Heating and Ventilating Engineers Guide, 1937 Fig. 1.

American Society of Heating and Ventilating Engineers Guide, 1937 Referring to the column for an equivalent total length of 300 ft for Sections AB and KA, each supplying 117.6 Mbh, it will be found that a lj^-in. pipe is too small and a2-in pipe is too large.

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t American Society o/ Heating and Ventilating Engineers Guide, 1937 OSTRIN, Albert (J 1936; S 1935). 1216 James N..

Heating Ventilating Air Conditioning Guide 1938 3 If 20 tons of coal having a calorific value of 13,000 Btu per pound are burned In a warm air furnace and produce 286,000,000 Btu at the bonnet, what is the efficiency of the furnace?

F riction H ead in M ilinches per Root op' Pipe toooq Heating Ventilating Air Conditioning Guide 1938 loo 300 1000 Meat conveyed per Hour in iooo B.T.

Heating Ventilating Air Conditioning Guide 1938 8 t Do all unit ventilators introduce a constant amount of outdoor air?