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ABSTRACT
In the last few decades, exergetic and cost-effective analyzing of major thermal systems like power plants has absorbed an incremental interest of research communities and politicians. This is due to the contributions of those techniques to the promotion of the performance of power cycles, and preventing them from dissipation of exergy flows. Besides, a cost-effective analysis helps the system designers develop some systematic strategies for reducing the additional investments. In this paper, the potential exergetic capacity of Damavand power plant, as the biggest constructed power plant in Middle East with the potential of producing about 2300MW electricity sited in Tehran, capital of Iran, is probed in a cost-effective fashion. The exergy and cost rate for all of the states of cycle and the final product of the power plant are verified with the aid of the second law of thermodynamics. Furthermore, the effects of some major operating parameters like air compressor pressure ratio, turbine inlet temperature (TIT), turbine and air compressor isentropic efficiency on the exergy destruction, and unit cost of the product are studied. The results prove the efficiency of fusing the economic and thermodynamic analyzing methods for finding the maximum operating potentials of Damavand power plant.