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Curves - viscosity
2

Curves - viscosity

Curves - viscosity

(OP)
Please i want to know how the curves of H(Q) (of a centrifugal pump) changes if the fluid is not the water but an oil with:

Relative density 0.759
Viscosity 0.53 cST     

Also I have mention that the operation temperature is 364 oC

Thanks in advance
Mike

RE: Curves - viscosity

Viscosity 0,53cSt have no influence for performance curves
f(Q)=H.
By the way to appoint correction factors You must take BEP (Best Efficiency Point) only.
Generaly viscosity have influence on performance curves about 4 - 6 cSt. It depend for specific speed

Sorry for my ENGLISH ;)

I understand more but I don't speak english very well

RE: Curves - viscosity

Your best bet for viscosity correction is to use the HI method.  For that you simply need to buy their standard and use it.

However as Adula29 points out, 0.53 cST will not require any viscous correction.   

RE: Curves - viscosity

THe HIS chart you linked to there appears to be the old HIS viscosity standard not the new one from 2002.

The old one yields significant errors particularly on low specific speed pumps.

 

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