Problem 5.10 The total head against which a steam driven pump operates is expressed as 160 psig. The pump develops 84 ihp, discharges 720 gpm of water at a temperature of 180F, receives steam with 0.97 quality at 140 psia, exhaust the steam against a pressure of 16 psia and uses 145 pounds of steam per ihp-hr. Find the water horsepower and thermal efficiency of the unit as operated.