Hydraulic efficiency (pumps)

Description

Due to leakage of fluid between the back surface of the impeller hub plate and the casing, or through other pump components – there is a volumetric loss reducing the pump efficiency.

Related formulas

Variables

nhydraulicHydraulic pump efficiency percent (dimensionless)
QactualTheoretical flow rate output (m3/s)
QtheoreticalActual flow rate output (m3/s)