Advanced exergoeconomic analysis of an electricity-generating facilitythat operates with natural gas

Abstract

This paper presents an advanced exergy analysis of an electricity generation facility in the Eskisehir Indus-try Estate Zone in Turkey. The total electricity generation rate is approximately 55 MW. The exergy effi-ciency of the system is 0.402 and the total exergy destruction rate of the system is 78.242 MW. The unitexergy cost of electrical power that is generated by the system is 25.660 $/GJ, and the total exergoeconomicfactor of the system is 0.247. Advanced exergetic and exergoeconomic analyses were applied to the consid-ered system. The advanced exergoeconomic analysis shows that the combustion chamber, the high-pres-sure steam turbine and the condenser have great economic improvement potential because of their highexergy destruction cost rates. Similarly, the heat recovery steam generator and the condenser have signif-icant potential because of their investment costs. In addition, suggestions to improve the system econom-icalparametersareprovided.Finally,itcanbeconcludedthatrelationsbetweenthecomponentsarestrong