Sea Water Pumps

[npf]

All:

I am in the process of determining cooling water pressure.The system basically consists of tunnel which collects water at 20m depth, the interface will be at the intake pit.There are several users and it is pumped back to the discharge tunnel. I have assumed my discharge elevation at 10m below datum.
What should I take my source elevation? Do I have to perform pump hydraulics for pressure determination.

Any help would be appreciated

Regards
npf

 

[MortenA]

Ehhhh?

Re "source elevation" - this would depend on your pump location RELATIVE to the source. Now you can "make a datum" and reference all elevations to this. This may allready have been done so you just "inherit" it - or you choose - e.g. pump inlet=0 or surface of water=0 or.... whatever seems practical to you

If you have to perform "pump hydraulics" - well that is for you to deside

Best regards

Morten

 

[npf]

Morten:

Thanks for your inputs. This is my first project on sea water pumps.Right now the pump would take suction from 20m depth.
I have couple of concerns:-
What pump orientation would be desirable(horizontal or vertical)?
Would source pressure be (depth *SG/2.31)?What static head should I use to determine my suction pressure?
Where would the pump location be?

Any comments would be appreciated

Regards,
npf

 

[Artisi]

I would suggest a trip to your local library or else undertake some research on pumps, pumping technology and like subjects on the internet.

What you are asking is meaningless and as we don't have a crystal ball to see what you are attempting to do - how can be give any meaningfull answer.

A simple sketch of what you have in mind would go a long way in helping us to help you.

Make a sketch, photgraph or scan it and post it using the following link.

http://www.freeimagehosting.net/