How is "pump efficiency" defined?

Pump efficiency is defined as the ratio of the useful work performed by a pump to the energy supplied. This concept is central to understanding how effectively a pump converts the input energy it receives into hydraulic energy for moving fluids.

In practical terms, pump efficiency indicates how much of the energy supplied to the pump is actually converted into useful work output, which is typically measured in terms of fluid flow rate and pressure increase. A pump with high efficiency means that a larger proportion of the energy input is being effectively used for moving the fluid as intended, while a lower efficiency indicates more energy is being wasted, often through heat loss or turbulence.

This definition highlights the importance of performance measurement in pump applications, as it informs decisions on energy usage, operational costs, and system design. Understanding pump efficiency is crucial for optimizing performance and ensuring the reliability of fluid handling systems.