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Performance assessment and system optimization of a combined cycle power plant (CCPP) based on exergoeconomic and exergoenvironmental analyses

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Abstract

We propose a systematic approach for performance evaluation and improvement of a combined cycle power plant (CCPP). Exergoeconomic and exergoenvironmental analyses are used to assess CCPP performance and suggest improvement potentials in economic and environmental aspects, respectively. Economic and environmental impacts of individual system components are calculated by cost functions and life cycle assessments. Both analyses are based on a CCPP case study located in Turkey, which consists of two gas turbine cycles and a steam turbine cycle with two different pressure heat recovery units. The results of the exergoeconomic analysis indicate that the combustion chamber and condenser have a high performance improvement potential by increasing capital cost. Furthermore, the exergoenvironmental analysis shows that the exergy destruction of the steam turbine and combustion chamber and/or the capacity of heat recovery units must be reduced in order to improve environmental performance. This study demonstrates that combined exergoeconomic and exergoenvironmental analyses are useful for finding improvement potentials for system optimization by simultaneously evaluating economic and environmental impacts.

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Authors and Affiliations

  1. Department of Environmental Science and Engineering, College of Engineering, Center for Environmental Studies, Kyung Hee University, Seocheon-dong 1, Giheung-gu, Yongin-si, 17104, Korea

    Minhyun Kim, Dongwoo Kim, Iman Janghorban Esfahani, Seungchul Lee, Minjeong Kim & Changkyoo Yoo

Authors
  1. Minhyun Kim
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  2. Dongwoo Kim
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  3. Iman Janghorban Esfahani
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  4. Seungchul Lee
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  5. Minjeong Kim
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  6. Changkyoo Yoo
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Correspondence to Changkyoo Yoo.

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The first, second, and third authors contributed equally to this research paper.

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Kim, M., Kim, D., Esfahani, I.J. et al. Performance assessment and system optimization of a combined cycle power plant (CCPP) based on exergoeconomic and exergoenvironmental analyses. Korean J. Chem. Eng. 34, 6–19 (2017). https://doi.org/10.1007/s11814-016-0276-2

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  • DOI: https://doi.org/10.1007/s11814-016-0276-2

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