What is the rate of exergy destruction in heat exchanger


Air is cooled from 120°F to 60°F at a rate of 1 lbm/s in a heat exchanger. The coolant is water that enters the exchanger at 40°F and 0.5 lbm/s. What is the rate of exergy destruction in this heat exchanger, in units of Btu/s? Assume atmospheric pressure and negligible pressure drop in both fluids, and the environment is 77°F.

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Mechanical Engineering: What is the rate of exergy destruction in heat exchanger
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