Title: Exergy analysis of a coal-fired thermal power plant in Kangal District of Turkey

Authors: Sevgi Erzen; Halil Ibrahim Acar; Oguzhan Pektezel

Addresses: Graduate Education Institute, Haliç University, İstanbul, Turkey ' Department of Mechanical Engineering, Faculty of Engineering, Sivas Cumhuriyet University, Sivas, Turkey ' Department of Mechanical Engineering, Faculty of Engineering and Architecture, Tokat Gazıosmanpasa University, Tokat, Turkey

Abstract: In this study, thermodynamic analysis of Kangal thermal power plant operating in Turkey was performed. Energy and exergy values of 35 points in the power plant were calculated. Energy and exergy equations of all components were derived to analyse the system performance. Exergy destruction, the second law efficiency and the efficiency defect were calculated for the system components. Also, the effect of ambient temperature on exergetic performance of the turbines and the condenser was analysed. Results were presented in graphs. The boiler was determined as the equipment that caused the greatest exergy destruction with 91.7%. The second high pressure feed water heater showed the greatest second law efficiency with 94.39. Thermal and the second law efficiency of the power plant were found to be 32.8% and 52.6%, respectively. It was found that increase in ambient temperature had a positive effect on condenser while had a negative effect on turbines.

Keywords: exergy analysis; thermal power plant; ambient temperature; efficiency defect; Turkey.

DOI: 10.1504/IJEX.2022.126548

International Journal of Exergy, 2022 Vol.39 No.3, pp.262 - 279

Received: 09 Nov 2021
Accepted: 21 Feb 2022
Published online: 28 Oct 2022 *

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