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.
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.
Related Topics
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.
Raynald Labrecque & Kiari Goni Boulama
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.
Related Topics
Labels: Exergy, Heat Recovery, Heat Transfer