Hot exhaust gases leaving an internal combustion engine at 4008C and 150 kPa at a rate of

Question:

Hot exhaust gases leaving an internal combustion engine at 4008C and 150 kPa at a rate of 0.8 kg/s is to be used to produce saturated steam at 2008C in an insulated heat exchanger. Water enters the heat exchanger at the ambient temperature of 208C, and the exhaust gases leave the heat exchanger at 3508C. 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.