also the seals are sensitive fragile and limit the apps. Flow rates and velocities do not have the range of traditional S&T, costly to clean and service, and no good in any ugly or fouling service. Suggesting this is "NEW" is just sales hype. In many apps theres nothing as robust and reliable as S&T. In europe in their fancy pharmachemical high priced sanitary environments its always been a better option with the great benefits cited. Its been that way for a long time. Not so in the hundreds of thousands of oil, crude, brine, oilsands, sour, erosive, corrosive, high throughput existing units and thousands of other "less than ideal" circumstances.
-----Original Message-----
From: George McKinney [mailto:gmckinney@augustaeng.com]
Sent: Monday, August 09, 2004 11:09 AM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] New Current Interesting Link - Exchangers
Paul:
Hopefully they have improved their design with respect to thermal cycling.
We used to have a couple of these made by Harrison Radiator for regenerative
cycle on GE Frame 3 turbines. Would have about 50-100 starts (thermal
cycles) per year. After about 5-6 years, the brazed joints would start
cracking and cycle efficiency would be out the window.
Agree with the other comments you had - good efficiency, great on physical size, just hope they have worked on plate design for fatigue resistance.
George McKinney
www.pipingdesign.com
Benefits of Brazed-Plate Heat Exchangers
<<Over the past decade a new technology has been taking hold on the US market. It offers significant advantages over the standard shell and tube heat exchanger, and it is flexible so it can be used in a variety of applications. Known as Plate Heat Exchangers, these units are significantly smaller in size, and are a more efficient option than their counterparts. Overall efficiency goes beyond the ability to transfer BTU's. Plate Heat Exchanger technology is not new, having been around for about 60 years. European companies have successfully used Plate Heat Exchangers in many different applications. There the technology has been refined, and the results are such now that many US industries are taking a new fresh look.>>
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Received on Mon Aug 09 20:33:00 2004
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