what is npsh and how to calculate it for a centrifugal pump
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Answer Posted / p.manikandan
NPSH is the acronym of Net Positive Suction Head, there r 2
NPSH one is NPSH(a) and NPSH(r) i.e., NPSH available and
required. Always NPSH(a) should be higher than the NPSH(r)
this NPSH(R) will be determined my the pump manufacturer
itself.
TO calculate NPSH(a)
NPSHa = Atm. pr.acting on the liquid + static head - vapour
pressure of the liquid- pressure
loss in the suction piping - pressure loss due to the
suction strainer.
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