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Hydraulic Efficiency

Hydraulic efficiency describes the ratio of the hydraulic power actually delivered by a pump to the mechanical power consumed. It is a key parameter for evaluating a pump's energy efficiency and is expressed as a percentage.

Calculation of hydraulic efficiency:

A high hydraulic efficiency means the pump converts a large part of the supplied mechanical energy into pumping capacity. A low value indicates energy losses that can arise from flow losses, friction or turbulence in the pump system.

Factors that influence hydraulic efficiency:

• Flow losses: Frictional losses in the pump channels
• Pump geometry: Optimal design of the delivery chambers
• Fluid properties: Viscosity, density and particle content of the pumped liquid
• Operating conditions: Delivery height, flow rate and speed