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this have been solved on chegg already,

please type out solution so that i may add it to my notes.

please TYPE OUT solution with equations (word0

4.8) A hot stream is to be cooled from 300F to 275F in a double-pipe heat exchanger by heating a cold stream from 100F to 290F. In order to control pressure drops, the heat exchanger will be comprised of three parallel banks of hairpins with the hot stream flowing in series and the cold stream divided into three parallel branches. Calculate the mean temperature difference for the heat exchanger. Ans. 37.6F