LU.< Am 16, 1949 filo 411 G. 7.

JANUARY, 19SS Supeoedw Issue October, 1944 Navy Control BUU.ETIH 6932 (Continued* Drum Type Transfer r Selector Switch Types T-4, T-5 and T-6- Service Class... .Navy A. ' Specifications.. .Designed to meet lid- requiremonte of Service A oi Department cl Defense Specifications MItrC-2174, dated May 9, 1950 and MTL-C-2212, dated June 13, 1950..

C-O N riDENTl A-L Mellon Institute of Industrial Research UNIVERSITY- OF PITTSBURGH PLAINTIFF'S EXHIBIT IHF-326 PROGRESS REPORT for the week ended March 9, 1946 INDUSTRIAL HYGIENE ROUl'TATIOM Subjects under which report is to be indexed Industrial Fellowship No. 259-12 5 copies made: 1 - Mellon Institute 2 - Industrial Hygiene files The summary of the paper on "Appraising Exposures to Silica Dust" ' was prepared.

o o JK 0.3.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 not be confused with mechanical draft systems that create draft mechani cally, but which must also be automatically controlled.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 and rate of burning of stoker-fired solid fuels it is not sufficient to analyze a grab sample.

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 Substituting in Equation 4: St = 24,000 + 0.24 X 0.075 X 60 X 1000 (70-0) <= 99,600 Btu per hour . _______ 24'h 70 ,y 0.24 X 0.075 X 60 X 1000 92.2 F.

HEATING VENTILATINC AIR CONDITIONING GUIDE 1940 feathers and lint, the exhaust vent should be large enough to permit an air velocity of 200 to 500 fpm.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 (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.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 Table 4.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 some extent for office applications where appearance is not a major factor.

V HEATINC VENTILATINC AIR CONDITIONING GUIDE 1941 then passes through an expansion valve to an evaporator, where heat is absorbed from a cooling load.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 If the conditions are such that the air may circulate through cracks and crevices in the insulation, the increases may be far greater than those given.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1942 and 3 in a similar manner to designate stream 2 and the resulting mixture respectively, write: Mi + Mi = Mi (weight balance for the dry air) MiWi + MiWi -- MiWi (weight balance for the water) Mihi + Mihi = M,Aj (energy balance, no heat absorbed) Eliminating Mi, Wi -- W, h, - hi Mi W, - Wi h, - hi Mi ,, K' ' according to which: on the Mollier Chart the representative point of the resulting mixture lies on the straight line connecting the representative points of the two streams being mixed, and divides the line into two segments which are in the same ratio as the weights of dry air in the two streams.

HEATING VENTILATING AIR CONDITIONING CUIDE 1942 Table 4.