Mechanical Efficiency of Pump or Fan Calculator

The efficiency of the pump or fan to convert energy and power into force is called its mechanical efficiency. It is a ratio of theoretical power required to operate the pump with the actual power delivered to the pump. It aids to find the actual power supply as well the power lost in bearings and other moving parts of a pump. Online calculator to calculate Mechanical Efficiency of Pump or Fan based on power transformed from motor to shaft and power lost in transmission.

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The efficiency of the pump or fan to convert energy and power into force is called its mechanical efficiency. It is a ratio of theoretical power required to operate the pump with the actual power delivered to the pump. It aids to find the actual power supply as well the power lost in bearings and other moving parts of a pump. Online calculator to calculate Mechanical Efficiency of Pump or Fan based on power transformed from motor to shaft and power lost in transmission.

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Formula:

ηm = (P - Pl) / P Where, ηm = Mechanical Efficiency of Pump or Fan P = Power Transferred from the Motor to the Shaft Pl = Power Lost in the Transmission

Example

When 3321 W power is transferred from motor to shaft of the fan, 20 W power is lost, then

ηm of Fan = (3321 - 20) / 3321
= 0.9940


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