Question

A cross flow heat exchanger (Both fluids are mixed) Is used to heat oil in the tubes (c=1.8 kj/kg · ◦c) from 15◦c to 85◦c with a mass flow of 0.73kg/sec. blowing across the outside of the tubes is steam that enters at 130◦c and leaves at 110◦c with a mass flow of 5.3 kg/sec. The overall heat-transfer coefficient is 270 w/m2◦c and c for steam is 1.96kj/kg◦c. The surface area of the heat exchanger is 12 m2. Calculate effectiveness of this heat exchanger. (N

Answer 1

Answer:

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