You read that off the manufacturer’s pump curve (Fig. 2). As the flow goes up, the required NPSH always increases. Then you’ve got your available NPSH. I learned how to calculate this ...

Theoretically, any liquid pump can experience NPSH transients ... at the start of the transient adds some cushion to the calculation results. Thurston recommended using the outlet enthalpy ...

"Analysis of Feedwater Pump Suction Pressure Decay," ASME ... The proposed simplified calculations to determine NPSH in the deaerator system give a close, conservative estimate of the more ...

In such cases, low-speed, low-NPSH booster pumps are used upstream of the BFW ... (Note that the hot re-start transient is not a part of this calculation). A. Input Data: – Deaerator pressure ...