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Pump Affinity Laws

Affinity laws: Q2=Q1(N2/N1), H2=H1(N2/N1)^2, P2=P1(N2/N1)^3.

Inputs

Inputs

Result

Head at N2
20.55 m
Shaft power at N2
6.61 kW
Flow at N2
82.76 m3/h

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How to use this result.

Predict duty after VSD slowdown or trim.

Verify before relying.

  1. Confirm units match the input labels before trusting the result.
Screening result for preliminary sizing only. Verify against the manufacturer datasheet and applicable standard before procurement or construction.

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