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Pump power 20 m³/h at 30 metres

A water pump of 20 m³/h and a head of 30 m consumes about 2.5 kW at the shaft at 65 % efficiency, and the motor with reserve is 3 kW.

Parameters

Result

Approximate calculation using a simplified model: for designing equipment and process modes, consult a technologist.

Calculation example

Feed
20 m³/h
Head is given in
metres of liquid column
Head
30
Medium
Water
Pump efficiency
65 %
Motor reserve
15 %
Operation per shift
8 h
Motor from the standard series
3,00 kW
Shaft power
2,51 kW
Hydraulic power
1,63 kW
Required motor with reserve
2,89 kW
Head
30,0 m
Pressure
2,94 bar
Energy per shift
20,1 kWh

Frequently asked questions

How to calculate pump power?
N = ρ·g·Q·H / η: density, g = 9.81, flow in m³/s, head in metres, pump efficiency.

The calculations are approximate: they help to assess the process and compare options, but do not replace a process design and trials on a specific raw material. This section is for reference only and contains no commercial offers.