Why is there such a large difference in motor power when the pump models are the same and their efficiencies are roughly identical? ?
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Why is there such a large difference in motor power when the pump models are the same and their efficiencies are roughly identical? ?
At the same head and flow rate, the greater the specific gravity of the medium, the greater the shaft power required, and consequently the greater the motor power needed. Therefore, pumps of the same model need to be equipped with motors of different types to handle media of varying specific gravities
It’s not the influence of the medium that is taken into account, but rather the performance characteristics of the pump itself
When the pump’s speed and impeller diameter change, the shaft power of the pump also changes accordingly.
N=H*g*qv*ρ/η
This post was last edited by Security Door on 2017-1-7 at 16:53. If the head and flow rate of the pumps are similar, another reason could be different motor models, as this leads to differences in motor power.
What is the inevitable relationship between efficiency and power?
{:3_46:}What does it mean to have the same model? If the motor power is different while the efficiency remains similar, then the state of the material at the outlet will definitely be different; how can the models be the same in such a case? . . . Have you found the right one**?