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Exergy analysis of a 300 MW lignite thermoelectric power plant

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  • Koroneos, Christopher J.
  • Fokaides, Paris A.
  • Christoforou, Elias A.

Abstract

In recent decades, utilization of exergy has spread to the fields of physics and engineering as a useful decision making tool. The ratio of energy to exergy in a substance can be considered as an indicator for the improvement of the energy efficiency of large scale energy systems. In this study, an exergy analysis of a 300 MW lignite thermoelectric power plant, located in Ptolemais Greece, is carried out. In order to promote a more efficient solution, the existing lignite thermoelectric power plant is compared with three different cogeneration (CHP (combined heat and power)) systems, employing the Rankine cycle, designed to use the same amount of fuel as the existing one. The performed exergy analysis reveals that the utilization of the proposed CHP systems may result to a significant increase of the energy efficiency, compared to the performance of the existing power plant.

Suggested Citation

  • Koroneos, Christopher J. & Fokaides, Paris A. & Christoforou, Elias A., 2014. "Exergy analysis of a 300 MW lignite thermoelectric power plant," Energy, Elsevier, vol. 75(C), pages 304-311.
    • Handle: RePEc:eee:energy:v:75:y:2014:i:c:p:304-311
    DOI: 10.1016/j.energy.2014.07.079
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    References listed on IDEAS

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    Cited by:

    1. Liu, Rongtang & Liu, Ming & Fan, Peipei & Zhao, Yongliang & Yan, Junjie, 2018. "Thermodynamic study on a novel lignite poly-generation system of electricity-gas-tar integrated with pre-drying and pyrolysis," Energy, Elsevier, vol. 165(PB), pages 140-152.
    2. Tomków, Łukasz & Cholewiński, Maciej, 2015. "Improvement of the LNG (liquid natural gas) regasification efficiency by utilizing the cold exergy with a coupled absorption – ORC (organic Rankine cycle)," Energy, Elsevier, vol. 87(C), pages 645-653.
    3. Ximei Li & Jianmin Gao & Yaning Zhang & Yu Zhang & Qian Du & Shaohua Wu & Yukun Qin, 2020. "Energy, Exergy and Economic Analyses of a Combined Heating and Power System with Turbine-Driving Fans and Pumps in Northeast China," Energies, MDPI, vol. 13(4), pages 1-22, February.

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    Keywords

    Exergy; Lignite; Power plant;
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