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Comparison of the efficiency of the variants of a primary gas turbine supplementing a coal-fired power plant

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  • Szargut, Jan
  • Szczygiel, Ireneusz

Abstract

Thermodynamic effects of four variants of the installation of a primary gas turbine supplementing a coal-fired power plant have been determined. The variants differ in the utilization mode of the heat recovery boiler of the gas turbine, which may be used to preheat the feed water of the steam power plant, but also for a secondary superheating of the steam. The introduction of an additional gas turbine expanding the working fluid down to a pressure lower than the ambient one with an additional compressor installed after the heat recovery boiler has been considered too. The reduction of exergy losses in the heat recovery boiler has been accepted as the main purpose of changing the scheme of the system. The new variants have been compared by means of the incremental energy efficiency of the gas turbine, characterizing the utilization degree of natural gas in the complex system.

Suggested Citation

  • Szargut, Jan & Szczygiel, Ireneusz, 2005. "Comparison of the efficiency of the variants of a primary gas turbine supplementing a coal-fired power plant," Energy, Elsevier, vol. 30(7), pages 1204-1217.
    • Handle: RePEc:eee:energy:v:30:y:2005:i:7:p:1204-1217
    DOI: 10.1016/j.energy.2004.05.018
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    Citations

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    Cited by:

    1. Carapellucci, Roberto & Giordano, Lorena, 2015. "Upgrading existing coal-fired power plants through heavy-duty and aeroderivative gas turbines," Applied Energy, Elsevier, vol. 156(C), pages 86-98.
    2. Mehrpanahi, A. & Nikbakht Naserabad, S. & Ahmadi, G., 2019. "Multi-objective linear regression based optimization of full repowering a single pressure steam power plant," Energy, Elsevier, vol. 179(C), pages 1017-1035.
    3. Ishaq, H. & Dincer, I. & Naterer, G.F., 2018. "Exergy-based thermal management of a steelmaking process linked with a multi-generation power and desalination system," Energy, Elsevier, vol. 159(C), pages 1206-1217.
    4. Bianchi, Michele & Branchini, Lisa & Cesari, Simone & De Pascale, Andrea & Melino, Francesco, 2015. "Repowering existing under-utilized WTE power plant with gas turbines," Applied Energy, Elsevier, vol. 160(C), pages 902-911.
    5. Wang, Yuelan & Ma, Zengyi & Shen, Yueliang & Tang, Yijun & Ni, Mingjiang & Chi, Yong & Yan, Jianhua & Cen, Kefa, 2016. "A power-saving control strategy for reducing the total pressure applied by the primary air fan of a coal-fired power plant," Applied Energy, Elsevier, vol. 175(C), pages 380-388.
    6. Ryszard Bartnik & Waldemar Skomudek & Zbigniew Buryn & Anna Hnydiuk-Stefan & Aleksandra Otawa, 2018. "Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System," Energies, MDPI, vol. 11(7), pages 1-22, July.
    7. Ezzat, M.F. & Dincer, I., 2019. "Development and exergetic assessment of a new hybrid vehicle incorporating gas turbine as powering option," Energy, Elsevier, vol. 170(C), pages 112-119.

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