Pump Horsepower

Written by Jerry Ratzlaff on . Posted in Pump

Pump horsepower, abbreviated as \(HP_p\), is a measure of power or the rate of doing work.


Pump Horsepower formulas

\(\large{ HP_p = \frac{ Q \;\Delta P}{1715 \;\eta_p } }\)   
\(\large{ HP_p = \frac{ 0.0002525}{ \eta_p } \; Q \; H  }\)  


\(\large{ HP_p }\) = pump horsepower

\(\large{ Q }\) = flow rate (GPM)

\(\large{ H }\) = head

\(\large{ \Delta P }\) = pressure added (discharge minus suction), psig

\(\large{ \eta_p }\)  (Greek symbols eta) = pump efficiency


The expression can be rearranged to obtain \(\Delta P\) in terms of other variables.


Tags: Equations for Power Equations for Horsepower