## Pump NPSHa

## Pump NPSHa

(OP)

Hi all,

I want to determine the NPSHa for a pump (amine charge pump) with a flow rate of 350 m3/h.

I want to do HYSYS simulation to find the some data required for manual calculation. With HYSYS I want to calculate fitting and friction loss, vapour pressure of liquid at pump and velocity at pump entry.

Can you please assist me on how to simulate HYSYS to find the data required?

Thank you,

I want to determine the NPSHa for a pump (amine charge pump) with a flow rate of 350 m3/h.

I want to do HYSYS simulation to find the some data required for manual calculation. With HYSYS I want to calculate fitting and friction loss, vapour pressure of liquid at pump and velocity at pump entry.

Can you please assist me on how to simulate HYSYS to find the data required?

Thank you,

## RE: Pump NPSHa

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P.E. Metallurgy, Plymouth Tube

## RE: Pump NPSHa

## RE: Pump NPSHa

## RE: Pump NPSHa

I am actually doing the NPSHa calculation for the pump. Some data for my calculation I will take from HYSYS.

As per my post above, the three data required will be extracted from HYSYS. I still blur with the simulation.

## RE: Pump NPSHa

## RE: Pump NPSHa

What is the term of Static Head for NPSHA calculation for centrifugal, is it just the delta elevation or is the elevation plus the delta pressure head?

I would appreciate it, if someone could give an explanation of this term and NPSHA calculation for centrifugal pump

Thank you

## RE: Pump NPSHa

Vap pressure = 201.3 kPa

Head loss = 1.891 kPa

Elevation = 1.55 m

Velocity = 2.173 m/s

Abs pressure at tank = 101.3 kPa

g = 9.81 m/s

rho = 965 kg/m3

Pump is located below the tank

what is the NPSHA?

## RE: Pump NPSHa

## RE: Pump NPSHa

I have recalculated and have got the answer.