Centrifugal Pump Design Assumptions.

Could anyone please explain the basis of assumption for following parameters in pump design, 

1. Pump speed.

2. Pump efficiency.

Thanks, 

Subodh Ubhare. 

As in sizing a pump or designing a pump?

As in sizing a pump or designing a pump?

as in sizing of CF pump, for pump efficiency & impeller rotation speed.   

Hi ,

Consider the resource attached.

Good luck.

Breizh

Could anyone please explain the basis of assumption for following parameters in pump design, 

1. Pump speed.

2. Pump efficiency.

 

Thanks, 

Subodh Ubhare. 

Hi Subodh,

I guess you need to get in touch with a Rotating Engineer in your company for these values. He can provide you an approx value based on Archive data or he can get in touch with a vendor who can provide the same.

Regards 

my 2 cents from the young years as process engineer in the refining setor:

- assume 3500 rpm

- estimate efficiency according to the attached graph (based on stats)

- check/revise on the base of catalog selection and, finally, vendor data

good luck!

Could anyone please explain the basis of assumption for following parameters in pump design, 

1. Pump speed.

2. Pump efficiency.

Hi,

These are the pump parameters are utilizing/specifying by the design division of the pumps manufacturers; hence to get a real sense about the typical values of them you can refer to the relevant vendors catalogs...

Hi ,

To add to my previous email :

http://www.mcnallyin...-html/7-03.html

hope this is helping  you.

Breizh

my 2 cents from the young years as process engineer in the refining setor:

- assume 3500 rpm

- estimate efficiency according to the attached graph (based on stats)

- check/revise on the base of catalog selection and, finally, vendor data

good luck!

Considering "Subodh Ubhare" is in Mumbai and the electrical frequency is 50Hz there, 3000rpm should be used for motor speed. 3600rpm is for 60Hz countries and the slight reduction is from slip.