Get The Most out of Waste Heat (Exergy approach)

Display problem ?... Click HERE

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May 24, 2008 : The FREE download no longer applicable.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.

Related Topics

• Sleeving Extends Heat Exchanger Life
  
• Practical Design Tips for Heat Exchanger
  
• Should Forced Draft or Induced Draft Air Cooler be employed on offshore platform ?
• Typical Heat Transfer Coefficient For Air-Cooled Heat
• COLLECTION of Typical Overall Heat Transfer
• COLLECTION of Fouling Factor (FF) use in Heat Exchanger Design
• FAYF - Heat Transfer - Useful Heat Transfer Equation
  

(Recommended...Click here)