Centrifugal Pump Power Calculation Made Simple!

Centrifugal Pump Power Calculation Made Simple!

Knowing the required pump power is essential for selecting the right motor, improving energy efficiency, and ensuring reliable pump performance.

Pump Power Formula:

P (kW) = (ρ × g × Q × H) / (1000 × η)

Where:

ρ = Fluid density (kg/m³)

g = Gravitational acceleration (9.81 m/s²)

Q = Flow rate (m³/s)

H = Total head (m)

η = Pump efficiency (decimal)

Example:

• Flow Rate = 30 L/s

• Head = 50 m

• Pump Efficiency = 80%

Required Pump Power = 18.4 kW

Understanding this calculation helps engineers and technicians:

Select the correct pump and motor

Estimate energy consumption

Improve system efficiency

Reduce operating costs

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