A digest of the rules for the design of condensers and air pumps . 95 to 110 28 inches 60 to 75 . 85 to 95 90 to 100 29 inches 55 to 70 70 to 78 70 tO 78 It will be seen that the temperature drops are limited by the tem-perature of the steam at condenser pressure and the temperature of the enteringcooling water. It is common to consider the lower temperature as 70 degreesalthough this may be somewhat lower in the winter. As most steam turbine in-stallations are figured on a 28 inch vacuum the drops mentioned above are foundto be applicable. 3. The amount of cooling water req
A digest of the rules for the design of condensers and air pumps . 95 to 110 28 inches 60 to 75 . 85 to 95 90 to 100 29 inches 55 to 70 70 to 78 70 tO 78 It will be seen that the temperature drops are limited by the tem-perature of the steam at condenser pressure and the temperature of the enteringcooling water. It is common to consider the lower temperature as 70 degreesalthough this may be somewhat lower in the winter. As most steam turbine in-stallations are figured on a 28 inch vacuum the drops mentioned above are foundto be applicable. 3. The amount of cooling water required per pound of steam in a sur-face condenser is dependent upon the vacuum, the temperature of the condensedsteam, and the rise in the temperature of the cooling water. Let j( = total heat of exhaust steam above 32 degrees = temperature of the condensed steamT-j ? temperature of injection waterT0 = temperature of discharge waterW = weight in pounds of injection water necessaryto condense one pound of steam. Then approximately W = * T4 t 52 _ _ . (2)digestofrulesfor00kran. 32
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
