A triple effect evaporator is supplied with saturated steam at 240 °F. The temperature at the last effect is 160 °F. The OHTCs are 250, 300, and 350 BTU/h·ft2 ·°F in the 1st, 2nd, and 3rd effects, respectively. If the total BPR in the three effects is 65 °F and the steam used is 9,000 lb/h, calculate the area of the evaporators in ft2 .

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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A triple effect evaporator is supplied with saturated steam at 240 °F. The temperature at the last effect is 160 °F. The OHTCs are 250, 300, and 350 BTU/h·ft2 ·°F in the 1st, 2nd, and 3rd effects, respectively. If the total BPR in the three effects is 65 °F and the steam used is 9,000 lb/h, calculate the area of the evaporators in ft2 .
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