3 replies to this topic

[Usman Afzal 244]

I have a centrifugal pump with following specification:

Flow 70 m3/hr
Head 50 m
Closed Impeller dia 400mm
Suction dia 8 inch
Discharge dia 6 inch
Rpm 1460
Power 55 kW

I want to operate this pump at 30meter head and 70 m3/hr flow.


What will be the motor kW keeping in view 400 mm impeller dia?

Edited by Usman Afzal 244, 19 January 2022 - 07:21 AM.

[latexman]

Use the Pump Affinity Laws.

[Bobby Strain]

How do you propose to operate the pump at 30 m head?

 

Bobby

[breizh]

Hi,

Can you share with us the pump curves and let us know why this change in the operating point ? 

Why don't you want to trim the impeller ? 

Note : make sure you understand what is head about = TDH =H discharge- H suction , not static head difference.

Hope this is helping you. 

Breizh