Papers, Reports and Discussions (Volume 7) (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911. Excerpt: ... evenly under severe changes; also, one is not bothered with the setting of valves, etc. Fred M. Lege, Jr. E 4. Considering first cost, efficiency and reliability of service, and also Texas fuel and water conditions generally, what type of prime mover should be selected, where the unit to be selected is 200 K. W. or over, Corliss or automatic engine, steam turbine or gas enc Corliss engine. G. H. Cushman. There are so many conditions to consider in this question that it is difficult to give a positive answer. If fuel is abnormally high, the gas engine might be used to advantage. Unless circulating water can be obtained at a reasonable cost and the load is fairly constant, the turbine could not be used economically. In going over the matter carefully we believe the Corliss unit would be the most desirable. It combines economy with reliability, and its superior life makes amends for its comparatively higher initial cost over a high-speed turbine or automatic engine. W. A. Guthrie. E-5. What temperature of water can be expected under average conditions from cooling tower with outside temperature 95 degrees F.? Taking the surrounding air temperature at ninety-five degrees P., the temperature secured from an open air cooling tower would depend entirely upon the humidity of the atmosphere and the direction of the prevailing wind with reference to the location of the tower; also, upon the general design of the cooling tower. However, with all things favorable, a temperature of ninety degrees can be secured without much trouble, and in many cases as low as eighty-five. Fred M. Lege, Jr. S-6. What vacuum can be expected at reasonable cost with 85 degrees F. water from cooling tower? A vacuum of twenty-six and one-half inches can be easily secured with eighty-five d...