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
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
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
However as Adula29 points out, 0.53 cST will not require any viscous correction.
RE: Curves - viscosity
Page 11 corrects for specific gravity differences. On page 23 is a viscosity correction chart. But usually anything less than 10 cSt doesn't need a viscosity correction factor.
-Mike
RE: Curves - viscosity
http://lh5
RE: Curves - viscosity
The old one yields significant errors particularly on low specific speed pumps.