Fluid Mechanics · worked example

Pump power for 200 m³/h at 60 m head (water)

Hydraulic, shaft, and motor power for a centrifugal pump moving 200 m³/h of water against 60 m of head, at 70 % pump and 95 % motor efficiency.

Inputs

Flow rate	200 m³/h
Differential head	60 m
Specific gravity	1
Pump efficiency	70 %
Motor efficiency	95 %

Result

Pump shaft (brake) power	46.698 kW
Pump shaft power	62.623 hp
Hydraulic power	32.689 kW
Recommended min motor	53.70 kW
Motor electrical input	49.156 kW

These values are computed by the Pump Sizing (API 610) calculator. Open the tool to change any input.

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