ASSESSMENT OF AN INTEGRATED SOLAR COMBINED CYCLE SYSTEM BASED ON CONVENTIONAL AND ADVANCED EXERGETIC METHODS

An integrated solar combined cycle system based on parabolic trough solar col-lector and combined cycle power plant is proposed. The advanced system is so-cio-economic significance compared to traditional combined cycle power system. Plainly, the exergetic analyses (exergy destruction and efficiency) via conventional and advanced methods are used for thermodynamic properties of the integrated so-lar combined cycle system components. In addition, the exergy destruction is divid-ed into endogenous, exogenous, avoidable, and unavoidable. The results show that the combustion chamber has the largest fuel exergy and the highest endogenous exergy destruction rate of 1001.60 MW and 213.87 MW, respectively. Additionally, the combustion chamber has the highest exergy destruction rate of 235.60 MW (60.29%), followed by the parabolic trough solar collector of 54.20 MW (13.87%). For overall system, the endogenous exergy destruction rate of 320.83 MW (82.10%) and exogenous exergy destruction rate of 69.97 MW (17.90%) are resulted via the advanced exergy analysis method. Besides, Several methods to reduce the exergy destruction and improve the components' efficiency are put forward.