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  1. paracetamol

    Composite Pump Curve for Dissimilar Pumps in Series

    Hello all, I have two dissimilar pumps in series. To plot the composite pump curve, is it okay to assume that Flow_both = (Flow1 + Flow2)/2 and Head = Head1 + Head2? First pump is fixed speed and the second is variable speed. Just trying to find the approx. intersection with the system curve...
  2. paracetamol

    2 identical pumps in parallel - same efficiency?

    Hi all, If one pump has a hydraulic efficiency of 85% at BEP, do two of the same pumps running in parallel also have an 85% efficiency? Now say the two pumps are each running at 120% of the BEP flow, how do I find the resulting efficiency? Any help is appreciated. [auto]

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