1 nere By Stuart Auerbach they are worried about "the nyl 'T..r::'-e nay contain low me -.vor-te-s -.a slants in Km- U'lihisttM ?

HWBB-0007821 f Air Hygiene Foundation of America, Inc., 4400 Fifth Avenue, Pittsburgh, Pa., May 15, 193?

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American Society, of Heating and Ventilating Engineers Guide, 1930 Chapter 2--Heat Losses from Buildings The internal resistance of a material is equal to the reciprocal of its so-called internal conductivity (k) multiplied by its thickness and is rep- Table 7.

American Society of Heating and Ventilating Engineers Guide, 1930 Example: Assume 70 deg. room temp. 42.3 deg. plus 70 deg. = 112.3 deg. 5.

American Society of Heating and Ventilating Engineers Guide, 1930 THERMOSTATS Primarily there are four types of thermostats used today in the heating industry, (See Figs. 1, 2, 3 and 4).

American Society of Heating and Ventilating Engineers Guide, 1930 on the indirect radiation or convectors used for heating the air.

American Society of Heating and Ventilating Engineers Guide, 1930 Table 4.

American Society of Heating and Ventilating Engineers Guide, 1930 316 ..

American Society of Heating and Ventilating- Engineers Guide, 1930 In some operations, time controllers-are used which automatically alter the conditions according to a predetermined schedule and finally bring the drying operation to a close.

American Society of Heating and Ventilating Engineers Guide, 1931 HARRIGAN, Howard H.

American Society o/ Heating and Ventilating Engineers Guide, 1932 Table 8.

American Society of Heating and Ventilating Engineers Guide, 1934 yellow pine floor (actual thickness, 25/32 in.) placed directly on 6 in. concrete on the ground, is determined as follows: 1_______ U= 1 0.781 6.0 = 0.48 Btu per hour per square foot per degree difference 1.65 + 0.80 + 12.0 in temperature between the ground and the air immediately above the floor.

American Society of Heating and Ventilating Engineers Guide, 1934 where .S Dq .= available draft, inches of water.

American Society of Heating and Ventilating Engineers Guide, 1934 where W = the amount of gases flowing, pounds per second.