NPSHA
NPSHA
(OP)
Hi..
IF NPSHA IS ABOVE NPSHR BY MARGIN OF 3FT,WILL THIS BE OK FOR ALL OPERATING PUMPS AT THEIR RATED CONDITION????CONDITIONS MAY VARY viz.PUMP MAY BE HAVING NEGATIVE OR POSITIVE SUCTION LIFT.AND ALSO THE VISCOSITY MAY REDUCE.....
IF NPSHA IS ABOVE NPSHR BY MARGIN OF 3FT,WILL THIS BE OK FOR ALL OPERATING PUMPS AT THEIR RATED CONDITION????CONDITIONS MAY VARY viz.PUMP MAY BE HAVING NEGATIVE OR POSITIVE SUCTION LIFT.AND ALSO THE VISCOSITY MAY REDUCE.....





RE: NPSHA
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: NPSHA
let me give you some more details.....
the flow is 225m3/hr....
the vapour pressure is 4 hPa.
specific gravity is 0.87...
the NPSHr is 4.4m........
can you explain me more?
RE: NPSHA
Johnny Pellin
RE: NPSHA
There are two measures that you can use to evaluate your pump a bit more closely in this regard: suction energy and suction specific speed.
The attached link may be of benefit.