An inventor has devised a complicated nonflow process in which $1$ mol of air is the working fluid.

The net effects of the process are claimed to be:

$-$A change in state of the air from $250$ o

C and $3$ bar to $80$ o

C and $1$ bar.

$-$The production of $1800$ J of work.

$-$The transfer of an undisclosed amount of heat to heat reservoir at $30$ o

C$.$

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$.$