Air vessel sizing

[Ouahmed]

i have problem of water hammer in pump station, and i want to know how to size an air vessel (analytical approach)?
should i always also use a relief valve ?
(this is the first time i work on this subject)

Thx

 

[BigInch]

You don't always need a relief valve, depending on what kind of surge control mechanism you are planning to build. Then again you don't always need a vessel either.

http://www2.emersonprocess.com/site...dels-762-67-Relief-Back-Pressure-Valve-DS.pdf

I'd like to explain more, but as you can see it is a bit too complicated to explain all of how you might want to do this it in an internet help context. You need to get a hydraulics engineer over there to help you.

Technology is stealing American jobs. Stop H1-Bs for robots.

 

[LittleInch]

You normally start by doing transient analysis on the system to see how much volume you need to absorb to reduce the surge pressure. Then discuss with a vendor.

Usually much better to solve the root cause instead of dealing with the symtoms.

Do some searching here for surge, water hammer, things like this

http://www.eng-tips.com/viewthread.cfm?qid=420593

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Ouahmed]

I appreciate your help