RE: about surge

From: <Erik>
Date: Sun Jan 16 2005 - 05:44:00 EST

I used this sofware perhaps even before you were born, but what has that to do with te fact that -2 bar does nor exist on the earth. Try to use Flowmaster its even better then impulse from AFT and you will never see results with pressure nodes below 0 bar.

Erik

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Van: gautam wayse [mailto:captain_wayse@yahoo.co.in] Verzonden: zaterdag 15 januari 2005 9:30 Aan: PipingDesign@yahoogroups.com
Onderwerp: RE: [PipingDesign] about surge

hi
friend
better to go for impulse software for surge analysis .from applied flow technology,.
use --- Erik Scheir <erik.scheir@pandora.be> wrote:

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What do you mean with - 2 bar? Is it barg? The absolute vacum is - 1 barg or 0 bara, so - 2bar doesn't exsist.

erik

-----Oorspronkelijk bericht-----

Van: Omid Hamlehdar [mailto:omid_7_ae@yahoo.com] Verzonden: dinsdag 11 januari 2005 7:19
Aan: PipingDesign@yahoogroups.com
CC: mechproj@xtra.co.nz; erik.scheir@pandora.be Onderwerp: [PipingDesign] about surge

Hi all

I have a project for water handling, a pipeline with 100 km length, I am
studying about surge in it according to a probable rapture in pipe and I am
going to close two valves surrounding rapture point to avoid wasting water
and to find out about surge cause by closing valves.

Any body has experience in this regards? How shall we protect our system?

I have heard from Erhard valve, they recommend a valve called "pipe burst
control valve" to avoid wasting water when there is a rapture, this valve
will be closed in around 2 min and this will cause surge in system, in some
point we have -2 bar minimum pressure. I know that you may need to know
about the profile but generally I would like to know how shall we suppress
this surge?

Best regards

Omid

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[Non-text portions of this message have been removed] Received on Sun Jan 16 05:44:00 2005