Endogenous and Exogenous Exergy Destruction of a Combined Cycle Power Plant with SupplementaryFiring

In this paper, a combined cycle power plant (CCPP) withsupplement firing is comparatively evaluated in terms ofthermodynamic using advanced exergy-based method toidentify the potential for improvement and theinteractions among system components. The actualoperational data are taken from the Zavareh CCPP, Iran.In the advanced exergetic analysis, the exergy destructionwithin each component of the system is split intoendogenous/exogenous and unavoidable/avoidable parts.The results indicate that the advanced exergy-basedmethod is a more meaningful and effective tool than theconventional one for system performance evaluation. Theresults indicate that the exogenous exergy destructionrate of the whole cycle is only ۷% of the total exergydestruction rate. Also, the avoidable exergy destructionof the overall system is determined ۱۴%.

کلیدواژه ها:

CCPP ، Advanced exergy ، duct burner ، improvement