Hi Ivan
I assume your concern is to get the same flow from each of the outlets.
Perry (Chemical Engineers Handbook) covers this with the design of spargers which are similar (pipe with holes drilled down the side).
The rule is:
"The ratios of kinetic energy in the inlet stream to pressure drop across the outlet hole(branch line) and of friction loss in the pipe(manifold) to pressure drop across the hole should be equal to or less that one tenth."
If this rule is followed, evenness of flow distribution is claimed to be within 5%
You may need to fit orifice plates to the outlet branches to achieve this.
As a starting point, I would look at a manifold velocity of around 1.5m/s
I hope this is what you are after.
Cheers
Steve McKenzie
-----Original Message-----
From: Ivan Fernandez [mailto:ifernandez@tecna.com.bo]
Sent: Thursday, May 09, 2002 3:08 AM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Manifold diameter
Avelino BarreiroHi to all contributors,
We have to design a manifold for water injection, with one inlet and seven outlets ; and I would like to know how to determinate the diameter of the manifolds pipe.
Anyone can give me some information for this ?.
Thanks !
Iván Fernández C.
TECNA BOLIVIA S.A. Torre CAINCO Av. Las Américas Nº 7 Piso 10 - Santa Cruz - Bolivia Tel.: (591-3) 336-2263 Fax: (591-3) 337-8470
Casilla de Correo 6572 - E-mail: ifernandez@tecna.com.bo
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Received on Wed May 08 17:53:00 2002
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