Solved: A well-insulated, thin-walled, counter-flow heat
Chapter 8, Problem 892(choose chapter or problem)
A well-insulated, thin-walled, counter-flow heat exchanger is to be used to cool oil (cp 5 2.20 kJ/kg8C) from 150 to 408C at a rate of 2 kg/s by water (cp 5 4.18 kJ/kg8C) that enters at 228C at a rate of 1.5 kg/s. The diameter of the tube is 2.5 cm, and its length is 6 m. Determine (a) the rate of heat transfer and (b) the rate of exergy destruction in the heat exchanger.
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