Pump Efficiency
Pump efficiency, abbreviated as \(\eta_p\) (Greek symbol eta), is the ratio of total horsepower output to shaft horsepower input of the pump or power output to power input.
Pump Efficiency formulas
\(\large{ \eta_p = \frac{ \rho \; G \; Q \; h }{ P } }\) | |
\(\large{ \eta_p = \frac{ WHP }{ BHP } }\) |
Where:
\(\large{ \eta_p }\) (Greek symbol eta) = pump efficiency
\(\large{ BHP }\) = brake horsepower
\(\large{ \rho }\) (Greek symbol rho) = density of fluid
\(\large{ Q }\) = flow rate
\(\large{ h }\) = head
\(\large{ P }\) = power input
\(\large{ G }\) = universal gravitational constant
\(\large{ WHP }\) = water horsepower