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Hot exhaust gases, which enter a tube heat exchanger with cross-flow fins (both unmixed fluids) at 1.5...

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Mechanical Engineering

Hot exhaust gases, which enter a tube heat exchanger withcross-flow fins (both
unmixed fluids) at 1.5 kg/s and 250 oC, are used to heatpressurized water at a speed
of 1.0 kg/s and 35 oC. The specific heat of the exhaust gas is1.0 kJ/kg K, and the
overall heat transfer coefficient based on the surface area ofthe gas side is Uh = 100
22
W/m K and Ah = 40 m . Calculate heat transfer for heatexchanger and gas and
water outlet temperatures.

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