How do you calculate pump motor kw?

The hydraulic power supplied by a pump is: Power = (P x Q) ÷ 500 – where power is in kilowatts [kW], P is the pressure in bars, and Q is the flow in litres per minute. ** based upon 100% efficiency; 90% efficiency would equate to 90 ÷ 0.9 = 100kW.

What is pump kW?

Pump input power from pump performance



Power (kW) = volumetric flow (L/s) * Head (m) 102.2 * Efficiency (decimal)

How do you calculate the power of a centrifugal pump?

Power output from the electric driver is calculated by the formula:Power Input to Pump = 1.732 * V * I * PF * Motor Efficiency * Coupling EfficiencyV: Measured Voltage of Motor in VoltI: Measured Current of Motor in AmperePF: Power FactorMotor Efficiency may be considered as design efficiency or may be obtained from …

How much HP pump do I need?

Example – Horsepower Required to Pump Water

Power Required to Pump Water (hp)
Volume Flow (gpm) Height (ft)
5 0.00631 0.0253
10 0.0126 0.0505
15 0.0189 0.0758

What does kW HP mean?

Kilowatts. 1kW = 1.341hp. Technically, this form of measurement is the most uniform method of measuring power and is used by every engineer worldwide. Watts are an SI unit (International System) which means they are based around the metre, kilogram, joule and second that make up the metric system.

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What does kW mean on motor?

An engine’s ability to deliver torque can be measured, whereas power is calculated. Power, expressed in kilowatts (kW) in South Africa (and horsepower in the UK and USA), is a unit of work performed divided per unit of time (one Watt = one joule per second).

What is pump duty?

The duty point is at the intersection between the Q-H curve and the system characteristics. … The system’s characteristics show the pressure loss in the system as a function of the flow. The duty point is the intersection between the pump performance curve and the system’s characteristics.

What is BKW of motor?

Bkw (brake kilowatts) is the power actually required to drive a piece of equipment. In this context, kw would be the power rating of the chosen driver. (Oftentimes the next standard size larger than the bkw.)

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