Energy and exergy analysis of a steam power plant to replace the boiler with a heat recovery steam generator
by Mahdi Mohseni; Hamid-Reza Bahrami; Mohammad Sadegh Leili
International Journal of Exergy (IJEX), Vol. 43, No. 1, 2024

Abstract: This research aims to optimise the power production of a thermal power plant in Iran by replacing the existing boiler with a heat recovery steam generator. A comprehensive study of the existing steam cycle and the proposed combined system reveals that the boiler, turbine, and condenser have the highest exergy destruction rates. The six heaters and boiler contribute 25% and 70% of the turbine input energy, respectively. The inlet temperatures of HP and IP turbines have the largest influence on the efficiency. The combined cycle analysis shows that first and second-law efficiencies can be increased by 27% and 26%, respectively.

Online publication date: Thu, 01-Feb-2024

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