Chapter 7, Problem 7.4P

Consider a heat transfer process of the steady form that occurs along a plain wall. While the inner room temperature was kept at 25 °C, the outdoor environment temperature was measured to be 2 °C. If the heat transfer at this plain wall in an hour is 3,528 kJ, determine the.total exergy destruction per unit time (the rate), which occurs during this heat transfer process, a) use the total entropy generation to find the rate of the total exergy destruction in the room (i.e.., use the entropy balance), b) use the exergy balance to find the rate of the total exergy destruction in the room

When the temperature T at the location where heat transfer is taking place is not constant, the exergy transfer accompanying.

Water at T1 fills a rigid container. The water now is heated until its temperature reaches to T2 at P2. If T1= 70 °C, T2= 700 °C, P2=0.6 MPa, T0=20 °C, P0=0.1 MPa, determine exergy change of the water during this process in (kJ/kg).