Pump Horsepower

Written by Jerry Ratzlaff on . Posted in Pump

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

 

Pump Horsepower formulas

\(\large{ PHP = \frac{ Q \;\Delta P}{1715 \;\eta_p } }\)   
\(\large{ PHP = \frac{ 0.0002525}{ \eta_p } \; Q \; H  }\)  
\(\large{ PHP = \frac{ Q \; H \; SG  }{ 3960 \;\eta_p } }\)  

Where:

\(\large{ PHP }\) = 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

\(\large{ SG }\) = specific gravity

notes

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

 

Tags: Equations for Power Equations for Horsepower