Is the energy efficiency class of the pump calculated including the motor?

2022-10-18View Original

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Is the energy efficiency rating of a pump determined based solely on the pump itself, or does it also take into account the overall energy efficiency of both the pump and the motor? Personally, I believe it only makes sense to consider the overall energy efficiency of the entire system, including both the pump and the motor.

Reply #22022-10-20

Energy efficiency applies to motors, while what is referred to as efficiency in the case of pump heads is a different concept

Reply #32022-10-21

Please refer to GB 32284-2015, “Minimum energy efficiency values and energy efficiency grades for centrifugal pumps in the petrochemical industry”

Reply #42022-10-21

Pumps have their own energy efficiency, and motors have theirs

Reply #52022-10-22

The energy efficiency grade of a pump and the energy consumption grade of its motor are not the same thing; these can be calculated by referring to GB 32284-2015

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Is the energy efficiency class of the pump calculated including the motor?

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