Best Efficiency Point - BEP

Maximum designed pump efficiency 

A pump does not completely convert the kinetic to pressure energy. Some of the energy is always lost internal and external in the pump. 

Internal losses

  • hydraulic losses - disk friction in the impeller, loss due to rapid change in direction an velocities through the pump
  • volumetric losses - internal recirculation at wear rings and bushes

External losses

  • mechanical losses - friction in seals and bearings

pump efficiency bep

The efficiency of the pump at the designed point is normally maximum and is called the

  • Best Efficiency Point - BEP

It is possible to operate the pump at other points than BEP, but the efficiency of the pump will always be lower than BEP.

Related Topics

  • Pumps - Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more

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