RE: Piping around Reciprocating Compressor

From: <Macharla>
Date: Sun Oct 07 2001 - 04:02:00 EDT


Paul,
I did not get your statement. Are U referring to any mail here. Hari.

-----Original Message-----
From: Paul Bowers [mailto:pbowers@pipingdesign.com] Sent: Sunday, October 07, 2001 11:54 AM
To: <a href="/group/PipingDesign/post?postID=JhzkqAAnyLYiLPYQf9KEG-GwPZQzCe_ThHJDh5Gx_r2-D1zJY2bcKEbb4O0_OQiKmWd1VnvP3zyOx4YZI8hsfNhxKA">PipingDesign@yahoogroups.com</a> Subject: Re: [PipingDesign] Piping around Reciprocating Compressor

Unless I see sometthing that changes my mind, I'm going to have to kick someone off the list.

Paul

> See the reply in CAPS
>
> -----Original Message-----
> From: SARE, RALPH H. [mailto:SARERH@YANPET.SABIC.com]
> Sent: Sunday, October 07, 2001 10:33 AM
> To: 'PipingDesign@yahoogroups.com'
> Subject: RE: [PipingDesign] Piping around Reciprocating
Compressor
>
>
> this sucker is big. for a positive displacement machine like a
reciprocating
> compressor, .....COULD NOT FOLLOW WHY YOU SAID IT IS BIG FOR
RECIPROCATING
> MACHINE. AS YOU MIGHT BE KNOWING OPTION OF RECIPROCATING Vs
CENTRIFUGAL WILL
> LIE WITH ACTUAL VOLUME FLOW RATE AND PRESSURE RATIO. IT IS NOT
 UNUSUAL TO
> HAVE RECIPROCATING COMPRESSORS IN THE ORDER OF 8 TO 10 MW SIZE
 >
> my worry will be pulasation and vibration more than the
nozzle
> load. the piping designer must be at least conversant or
familiar with the
> mode shape and understand the physics of resonat frequency....
THIS IS NOT
> AT ALL A PROBLEM, SINCE IT WILL BE TAKEN CARE IN API 618,
 APPROACH-3
> STUDIES. MY QUERY WAS SPECIFICALLY WITH REFERENCE TO NEW ELEMENT
 IN THE
> SYSTEM SPRING SUPPORT/VIBRATION ISOLATOR ON THE FOUNDATION.
 >
> And in most cases, prediction by computer modeling is unrelaible
(at least
> my expereinced). ... RALPH, COULD YOU ELABORATE. I COULD NOT
FOLLOW. IF THAT
> IS THE CASE, SOME THING MIGHT BE WRONG WITH EITHER THE PROGRAM
 OR INPUTS.
>
> HARI
 >
>
>
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