Worked example

Inputs

Liquid density: 1000 kg/m³
Flow: 0.02 m³/s
Total dynamic head: 20 m
Pump efficiency: 0.75

Expected results

Hydraulic power: 3922.66 W
Shaft power: 5230.213333 W
Pump mechanical/hydraulic loss: 1307.553333 W

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter every input in the labeled units; use measured or independently specified properties.
Check the stated model assumptions before calculating.
Interpret the output as a model estimate and verify it independently for the intended application.

Try this example

{
  "rho": 1000,
  "flow": 0.02,
  "head": 20,
  "efficiency": 0.75
}

Accuracy and scope

Steady incompressible operation with supplied overall pump efficiency; motor losses excluded. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.

Pump Hydraulic and Shaft Power