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Exergy Analysis Of Cogeneration Plant

Limitations of traditional first-law analysis, based upon unit-performance characteristics coupled with energy balances, are not a serious drawback when dealing with familiar systems. However, when dealing with more uncongenial, complex ones, it provides incomplete insight for such evaluation. These limitations come from the fact that first-law analysis does not indicate the sources or magnitudes of entropy production. An evaluation of plant performance will usually require a comparison of the thermodynamic performance of specific apparatuses or unit operations with available data from previously built plants. Therefore, exergy analysis has appeared to be very useful, providing information not just about magnitudes of losses, but also their distribution throughout the system. Such analysis which is not only useful at the level of apparatuses or unit operations but also at higher system levels e.g. for the comparison of overall plant performance (total system) or the performance of subsystems is the best method for indicating where research resources can be directed to best advantage.

Exergy Analysis; Cogeneration Plant

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