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Power Calculation for VFD Pump

Power Calculation for VFD Pump

Power Calculation for VFD Pump

(OP)
How do the affinity laws behave for %BHP in relationship to %flow when the head is constant?  

RE: Power Calculation for VFD Pump

You should be able to plot it on a pump curve to determine what will happen to the bhp.

RE: Power Calculation for VFD Pump

When you change the speed of a pump, head will never stay constant. If you are controlling the pump speed by a pressure controller, then you will not get much benefit out of a VSD scheme.

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