Advances in Energy Research

  • 제3권3호
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  • Pages.167-179
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  • 2015
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  • 2287-6316(pISSN)
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  • 2287-6324(eISSN)
테크노프레스 (Techno-Press)
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A techno-economic analysis of partial repowering of a 210 MW coal fired power plant

  • Samanta, Samiran (Department of Automobile Engineering, MCKV Institute of Engineering) ;
  • Ghosh, Sudip (Department of Mechanical Engineering, Indian Institute of Engineering Science and Technology)
  • 투고 : 2015.06.26
  • 심사 : 2015.09.21
  • 발행 : 2015.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a techno-economic analysis of a partial repowering scheme for an existing 210 MW coal fired power plant by integrating a gas turbine and by employing waste heat recovery. In this repowering scheme, one of the four operating coal mills is taken out and a new natural gas fired gas turbine (GT) block is considered to be integrated, whose exhaust is fed to the furnace of the existing boiler. Feedwater heating is proposed through the utilization of waste heat of the boiler exhaust gas. From the thermodynamic analysis it is seen that the proposed repowering scheme helps to increase the plant capacity by about 28% and the overall efficiency by 27%. It also results in 21% reduction in the plant heat rate and 29% reduction in the specific $CO_2$ emissions. The economic analysis reveals that the partial repowering scheme is cost effective resulting in a reduction of the unit cost of electricity (UCOE) by 8.4%. The economic analysis further shows that the UCOE of the repowered plant is lower than that of a new green-field power plant of similar capacity.

키워드

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피인용 문헌

  1. WITHDRAWN: Economic impact of repowering of an existing coal fired power plant through pressurized pulverized coal combustion and waste heat recovery 2016, https://doi.org/10.1016/j.pisc.2016.03.009
  2. Techno-economic assessment of a repowering scheme for a coal fired power plant through upstream integration of SOFC and downstream integration of MCFC vol.64, 2017, https://doi.org/10.1016/j.ijggc.2017.07.020
  3. A thermo-economic analysis of repowering of a 250 MW coal fired power plant through integration of Molten Carbonate Fuel Cell with carbon capture vol.51, 2016, https://doi.org/10.1016/j.ijggc.2016.04.021
  4. Fuel cells for carbon capture applications vol.769, pp.None, 2015, https://doi.org/10.1016/j.scitotenv.2020.144243