Chapter 8, Problem 8.4P

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

The heat across a wall dropped from 30C to 15C and 400W of heat lost while the outside temperature is 25C., the rate of exergy destruction within the wall in Watt is O 41 W O 20 W O 15 W O 51 W O 108 W O none of the above

Multiple Choice: Determine the cycle if the Clausius inequality is -0.185 BTU / R is it?  a. reversible b. impossible c. irreversible