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Affinity laws for multistage pumps
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I am wondering how to solve a problem with a two-stage centrifugal pump, I would like to revamp the pump to increase its performance by increasing impeller diameters and of course considering maximum…
Started this discussion. Last reply by Carlos Alberto Llinas Jessup Feb 16.
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Ian, thanks for your answer, I will do it in that way!!
Regards,
Carlos Llinas
Yes treat each impeller as an individual unit, ie calculate for 1 impeller using the affinity laws and if the second impeller is the same diameter just double the first number to give you the total head. At the end of the day if the head achieved is…
Jack, thanks for your answer. Yes, I do have the performance curve for the hole pump, but not for individual impellers, and the curve is a single-trim. May I use affinity laws in some other manner not needing to have individual impellers´performance…
the performance curve you have with 9-11/16" trims can be used to directly figure flow, head, and hp at a new speed using the affinity laws. the additive nature of the two stage is already taken care of in the performance curve. if you want to insta…
I am wondering how to solve a problem with a two-stage centrifugal pump, I would like to revamp the pump to increase its performance by increasing impeller diameters and of course considering maximum available motor horsepower, and applying affinity…
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- At 6:40am on February 8, 2010,
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