A pump operating at steady state draws water at 55°F from 10 ft underground where the pressure is 15 lbf/in.2 and delivers it 12 ft above ground at a pressure of 45 lbf/in.2 and a mass flow rate of 30 lb/s. In the absence of internal irreversibilities, determine the power required by the pump, in horsepower, ignoring kinetic energy effects. The local acceleration of gravity is 32.2 ft/s2. Would the actual power required by the pump be greater or less than the calculated value? Explain.