A pump moves water through commercial steel pipe from an ope

A pump moves water through commercial steel pipe from an open reservoir to a large diameter pressurized tank as shown below. How much Horsepower does the pump deliver to the fluid?

Solution

Data given

EL of the pump center line = 203 ft

Elevation of the pressurized tank level = 300 ft

Efficiency of the pump to be assumed as 0.85

Back pressure of the pressurized tank = 10 psi = 0.7 kg/cm^2

Discharge of the pump from the pump curve data(Q) = 130 gpm = 492.104 lpm

Motor power required to drive the pump =( P x Q)/(612 x efficency of motor)

= (0.7 x 492.1)/(612 x 0.85)

= 0.66 Kilo Watt