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NPSH Graph with low efficiencies

NPSH Graph with low efficiencies

NPSH Graph with low efficiencies

(OP)
Is this a reasonable NPSH graph i.e. the efficiency values?

RE: NPSH Graph with low efficiencies

A little cheesy, but it gets the point across.

RE: NPSH Graph with low efficiencies

The NPSHr is low and the efficiency is not very good. But, I don't see any thing particularly strange about the curves. Can you be more specific about your concerns?

Johnny Pellin

RE: NPSH Graph with low efficiencies

Not sure of your question, NPSH and efficiencies are separate functions and independent of each other.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

RE: NPSH Graph with low efficiencies

The efficiency doesn't look odd for low flow centrifugals.

RE: NPSH Graph with low efficiencies

Actually, I thought the efficiency was a bit optimistic for such a small pump.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

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