(Solved): A pump operating at steady state receives 1.2kg/s of liquid water at 50C,1.5MPa. The pressure ...

A pump operating at steady state receives $1.2\mathrm{kg}/\mathrm{s}$ of liquid water at $50^{\circ }\mathrm{C},1.5\mathrm{MPa}$. The pressure of the water at the pump exit is 14 $\mathrm{MPa}$. The magnitude of the work required by the pump is $21\mathrm{kW}$. Stray heat transfer and changes in kinetic and potential energy are negligible. Determine the work required by a reversible pump operating with the same conditions, in $\mathrm{kW}$, and the isentropic pump efficiency. Step 1 Determine the work required by a reversible pump operating with the same conditions, in $\mathrm{kW}$.