Water, which has a flow rate of 0.05 kg/s, enters the radiator at 400 K and leaves at 330 K. The water is cooled by air that enters at 0.75 kg/s and 300 K. C, for the water and air fluids are 4209 J/kg.K and 1007 J/ks.K. respectively. (a) Discuss how to determine the heat transfer for a parallel and counter flow heat exchanger, while showing the equations for the mean temperature difference. (b) If the overall heat transfer coefficient is 200 W/m? K, Calculate the total heat transfer rate through this heat exchanger? (c) If you use a parallel flow heat exchanger instead of the counter flow heat exchanger, determine the total heat transfer rate? Explain why there is a change in the heat transfer rate between the parallel and counter flow direction for the same type of heat exchanger. (d) Distinguish the differences between parallel and counter flow heat exchangers

Water, which has a flow rate of 0.05 kg/s, enters the radiator at 400 K and leaves at 330 K. The water is cooled by air that enters at 0.75 kg/s and 300 K. C, for the water and air fluids are 4209 J/kg.K and 1007 J/ks.K. respectively. (a) Discuss how to determine the heat transfer for a parallel and counter flow heat exchanger, while showing the equations for the mean temperature difference. (b) If the overall heat transfer coefficient is 200 W/m? K, Calculate the total heat transfer rate through this heat exchanger? (c) If you use a parallel flow heat exchanger instead of the counter flow heat exchanger, determine the total heat transfer rate? Explain why there is a change in the heat transfer rate between the parallel and counter flow direction for the same type of heat exchanger. (d) Distinguish the differences between parallel and counter flow heat exchangers

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.31P

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