4) An oil with a specific gravity of 0.833 and a viscosity of 3.3 cP is pumped from an open

tank to a closed, pressurized tank maintained at 40 psig. The oil is pumped at a rate of

0.15 ft3/sec through 70 ft of 4-in, schedule-40 commercial steel pipe to the pump. The

suction-side piping system contains a wide-open gate valve and a 90° elbow. On the

discharge side of the pump, there is 300 ft of 3-in, schedule-40 commercial steel pipe.

The discharge-side piping system contains two 90° elbows and a half-open globe valve,

all after the pump. The liquid level in the open tank is 60 ft above the liquid level in the

pressurized tank. The pump efficiency is 75%. Calculate the power required for the pump

in hP.