Best flow rate

The best flow rate is the flow at the point of best efficiency, i.e. the point at which the pump's efficiency curve has its maximum.

This point is called the best efficiency point (BEP) of the pump. The position of the point changes if the hydraulic parameters of the pump, such as the impeller diameter or the speed resp. the viscosity of the pumped liquid, change.

The aim of an optimal pump selection is for the pump to operate at the BEP so that it achieves its maximum efficiency.

More articles on this topic

Pumped medium

The liquid to be pumped (pumped medium) has a fundamental influence on the selection and configuration of a pump.

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Rainwater drainage

The precipitation values are climatically conditioned and regionally very different. Depending on their frequency, the rainfall donations that occur are differentiated into:

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Speed – Affinity Laws

The affinity law describes the speed dependency of the delivery parameters of centrifugal pumps. It can be derived from the general similarity relationships as a special case.

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Pump Performance Curve

The pumping performance of a centrifugal pump is expressed in the form of an H-Q curve, depicting the Flow Q (e.g. in m³/h) and the Head H (e.g. in m) of the pump.

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