2 replies to this topic

[sargon 1979]

Hi all;

A hot oil centrifugal pump was designed as follows:

- Motor power (Electric motor): 180 Kw.

- Motor RPM: 2980 RPM.

- Pump rated capacity : 250 m3/hr.

- pump differential pressure: 13 bar

- NPSHA: 160 m

 

Hot oil demand is reduced so, the pump is required to be trimmed using the following data:

- Motor power (Electric motor): 120 Kw.

- Pump rated capacity : 135 m3/hr.

- pump differential pressure: 13 bar

 

Hot oil data (BP TRANSCAL N):

- Density at 0 ْC: 840 kg/m3

- Density at 250 ْC: 725 kg/m3

- Viscosity at 0 ْC: 280 Cp

- Viscosity at 250 ْC: 5 Cp

 

Any help please

 

[breizh]

sargon 1979,

To get a meaningful  answer you should supply the pump curves and also give information about the diameter of the wheel .

 

What is your proposal ?

 

Good luck,

Breizh

 

 

[Bobby Strain]

You should consult the pump manufacturer before you trim the impeller.

 

Bobby