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A triple effect evaporator is supplied with saturated steam at 2500F. The temperature at the last effect is 150oF. The overall heat transfer coefficients are

A triple effect evaporator is supplied with saturated steam at 2500F. The temperature at the last effect is 150oF. The overall heat transfer coefficients are 150, 200, and 250 BTU/hr-ft2- oF in the 1st, 2nd, and 3rd effects, respectively. If the total BPR in the three effects is 55oF, what is the area of the first effect if the steam used is 10,000 lb/hr.

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