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Chemical Process Technology

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Chemical & Process Technology

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Monday, October 1, 2007

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Chemical & Process plant is energy intensive industry. However, so far waste energy in the form of heat, noise, vibration, etc is dissipated to environment without or with some level of recovery. Example of heat recovery is the waste heat recovery unit (WHRU) located at the Gas turbine flue gas outlet, economizer at the boiler flue gas outlet, etc. Generally the flue gas exit temperature still rather high i.e. 250 degC, as compare to ambient temperature of 30 degC, believe there is still heat can be recovered from temperature perspective. But how much energy can be recovered and it this worth for recovery ? How to measure quantity of heat recovered to generate work ?
Exergy is the term to measure the capability of a hot fluid to produce work.

Get the Most out of Waste Heat
Raynald Labrecque & Kiari Goni Boulame


Above article has described a simplified approach to evaluate the exergy content of a hot waste and estimate amount of useful energy can be recovered from waste gases.

Update :
May 24, 2008 : The FREE download no longer applicable. Only Chemical Engineering member can download the article.

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posted by Webworm, 6:24 PM

2 Comments:

Anonymous Anonymous said...

The link in the waste heat article did not work. I found the correct link.

http://www.che.com/technical_and_practical/2807.html

May 24, 2008 at 7:39 AM  
Blogger Webworm said...

Thanks. Updated.

May 24, 2008 at 8:52 AM  

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