Problem 6 A hydraulic pump operates at 1950 psi and delivers oil at 18 gpm to a hydraulic actuator. Oil discharges through the pressure relieve valve...

Problem 6

A hydraulic pump operates at 1950 psi and delivers oil at 18 gpm to a hydraulic actuator. Oil discharges through the pressure relieve valve (PRV) during 55% of cycle time. The pump has an overall efficiency of 83%, and 14% of power is lost due to frictional pressure losses in the hydraulic lines. What heat -exchanger rating is required to dissipate all the generated heat?

(Hint. 1 hp = 42.4 Btu/min = 2544 Btu/hr)