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Calculating Pump Efficiency

Calculating Pump Efficiency

Calculating Pump Efficiency

(OP)
What is the formula to calcuate the efficiency of a centrifugal pump?        David

RE: Calculating Pump Efficiency

There are a couple of ways.  The power used by a pump is

BHp = Q*P/(1714*e)  Q is the flow rate, gpm.  P is the differential pressure, psi, e is the pump's efficiency as a decimal and BHp is the shaft Hp used by the pump, Hp.  If you can measure those variables, you can calculate the efficiency.

RE: Calculating Pump Efficiency

Another option is to measure the temperature rise across the pump. Works best with high head pumps, see Thread403-22185.

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