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  1. cholopa

    Minimum flow for a VFD pump running in close loop

    Hi: I've been searching on this topic a lot and i can't find a reason why a pump can't operate at 1 Hz in the following conitions: A system in a big AHU(cooling coil) with one VFD pump and no three way or two way valves. Let's say at a given point a need 10% of the cooling power of that ahu...

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