Output Power

Output Power = 2πNT/60

Output Power = 2*π*800*(7.1*0.021)/60

Output Power = 12.49W

Input Power from Pump

Steady Flow Energy Equation (SFEE) between pump inlet (1) and pump outlet (2)

Assume the following:

The SFEE reduces to:

Apply the SFEE to the pump only

Pump inlet is (1) pump outlet is (2)

Assume the following:

Energy supplied to the pump

The mass flow rate of water through the system =

for water = 1000kg/m3

A = pipe cross sectional area = = 0.001257 m2

Pump power =

Efficiency = (12.49 x 100)2205 = 0.56%