Page 586 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

The Post-Shipment Phase: Installation, Pre-Commissioning, Commissioning and Start-up Best Practices Be st Practice 1 0.12

The Heart of the Pump Curve

What causes a change in the flow rate?
What is Cavitation?
NPSH?

What on earth is Recalculation?

Fig 10.12.3 Session topics

Fig 10.12.2 -

Please refer to Figure 10.12.5. If the operator can keep from
messing the pump, it will be reliable!
Guess what? It’s not him but the process which cannot
always be controlled!
If discharge pressure increases (closed valve), suction
pressure decreases(a plugged screen) or S.G. changes,
so does flow!

Fig 10.12.4 The heart of the curve

Fig 10.12.5 -

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