A pump pumps 0.200 ft3/s of brine solution having a density of 1.15 g/cm3 from an open feed tank having a large cross- sectional area. The suction line has an inside diameter of 3.548 in. And the discharge line from the pump a diameter of 2.067 in.
The discharge flow goes to an open overhead tank, and the open end of this line is 75 ft above the liquid level in the feed tank. If the friction losses in the piping system are 18.0 ft.lbf/lbm, what pressure must the pump develop and what is the horsepower of the pump if the efficiency is 70%? The flow is turbulent.