Using your computer solution from Problem 8.60, vary the pressure ratio from 1 (no compressor) to 40. Plot the outflow temperature and the compressor power as a function of the pressure ratio. Put the pressure ratio on the abscissa (x-axis).

Problem 8.60

A vertical cylinder–piston arrangement contains 0.3 lbm of H₂O (liquid and vapor in equilibrium) at 120 F, as shown in the sketch for the previous problem. Initially, the piston rests on the stops, and the volume beneath the 250-lbm piston is 1.054 ft³. The piston area is 120 in². The atmospheric pressure is 14.7 lbf /in², and the gravitational acceleration is 30.0 ft/s². Heat is transferred to the arrangement until only saturated vapor exists inside.