Hot exhaust gases leaving an internal combustion engine at 400oC and 150 kPa at a rate of 0.8 kg/s are to be used to produce saturated steam at 200oC in an insulated heat exchanger. Water enters the heat exchanger at the ambient temperature of 20oC, and the exhaust gases leave the hear exchanger at 350oC. Determine (a) the rate of steam production, (b) the rate of exergy destruction in the heat exchanger, and (c) the second-law efficiency of the heat exchanger.

Hot exhaust gases leaving an internal combustion engine at 400oC and 150 kPa at a rate of 0.8 kg/s are to be used to produce saturated steam at 200oC in an insulated heat exchanger. Water enters the heat exchanger at the ambient temperature of 20oC, and the exhaust gases leave the hear exchanger at 350oC. Determine (a) the rate of steam production, (b) the rate of exergy destruction in the heat exchanger, and (c) the second-law efficiency of the heat exchanger.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.3P

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