An inventor has devised a complicated non-flow process in which I mol of air is the working fluid. The net effects of the process are claimed lo be;
• A change in state of the air from 250oC and 3 bar to 80oC and 1 bar.
• The production of 1.800 J of work.
• The transfer of an undisclosed amount of heat to a heat reservoir at 30oC.
Determine whether the claimed performance of the process is consistent with the second law. Assume that air is an ideal gas for which Cp = (7/2)R?