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Design optimization of a new supercritical CO2 single reheat coal-fired power generation system

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  • Tong, Yongjing
  • Duan, Liqiang
  • Yang, Ming
  • Pang, Liping

Abstract

Although supercritical CO2 (S–CO2) coal-fired paper generation systems have been studied broadly in recent years, there is still potential for further energy savings. A new system is proposed to efficiently use the waste heat of both the cooler and the boiler. The new system extends the air preheater surface area, uses the economizer to replace part of the heat load of the high-temperature recuperator, and both the evaporator and precooler are arranged before the cooler. The performance analysis model of the new system is built, and the effects of the economizer split ratio, the main compressor split ratio, and the operation load on the new system performance are investigated. The results show that the new system performance is much better than that of the reference system. Under the design condition, the boiler efficiency and the power generation efficiency of the new system are 96.3% and 49.5%, 1.1% and 2.6% higher than those of the reference system. There exist optimal split ratios for both the economizer and main compressor. The optimal split ratio of the economizer is 10%, and that of the main compressor is 70%. The power generation efficiency decreases with a decreasing operation load.

Suggested Citation

  • Tong, Yongjing & Duan, Liqiang & Yang, Ming & Pang, Liping, 2022. "Design optimization of a new supercritical CO2 single reheat coal-fired power generation system," Energy, Elsevier, vol. 239(PB).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pb:s0360544221024221
    DOI: 10.1016/j.energy.2021.122174
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    References listed on IDEAS

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    1. Wang, Xurong & Dai, Yiping, 2016. "Exergoeconomic analysis of utilizing the transcritical CO2 cycle and the ORC for a recompression supercritical CO2 cycle waste heat recovery: A comparative study," Applied Energy, Elsevier, vol. 170(C), pages 193-207.
    2. Bai, Ziwei & Zhang, Guoqiang & Li, Yongyi & Xu, Gang & Yang, Yongping, 2018. "A supercritical CO2 Brayton cycle with a bleeding anabranch used in coal-fired power plants," Energy, Elsevier, vol. 142(C), pages 731-738.
    3. Liu, Yaping & Wang, Ying & Huang, Diangui, 2019. "Supercritical CO2 Brayton cycle: A state-of-the-art review," Energy, Elsevier, vol. 189(C).
    4. Chen, Zhewen & Wang, Yanjuan & Zhang, Xiaosong & Xu, Jinliang, 2020. "The energy-saving mechanism of coal-fired power plant with S–CO2 cycle compared to steam-Rankine cycle," Energy, Elsevier, vol. 195(C).
    5. Lin, Xiaolong & Li, Qinlun & Wang, Lukai & Guo, Yifan & Liu, Yinhe, 2020. "Thermo-economic analysis of typical thermal systems and corresponding novel system for a 1000 MW single reheat ultra-supercritical thermal power plant," Energy, Elsevier, vol. 201(C).
    6. Mecheri, Mounir & Le Moullec, Yann, 2016. "Supercritical CO2 Brayton cycles for coal-fired power plants," Energy, Elsevier, vol. 103(C), pages 758-771.
    7. Zhang, Yifan & Li, Hongzhi & Han, Wanlong & Bai, Wengang & Yang, Yu & Yao, Mingyu & Wang, Yueming, 2018. "Improved design of supercritical CO2 Brayton cycle for coal-fired power plant," Energy, Elsevier, vol. 155(C), pages 1-14.
    8. Le Moullec, Yann, 2013. "Conceptual study of a high efficiency coal-fired power plant with CO2 capture using a supercritical CO2 Brayton cycle," Energy, Elsevier, vol. 49(C), pages 32-46.
    9. Chen, Zhewen & Wang, Yanjuan & Zhang, Xiaosong, 2020. "Energy and exergy analyses of S–CO2 coal-fired power plant with reheating processes," Energy, Elsevier, vol. 211(C).
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    Cited by:

    1. Yanfeng Li & Jingru Liu & Guohe Huang, 2022. "Pressure Drop Optimization of the Main Steam and Reheat Steam System of a 1000 MW Secondary Reheat Unit," Energies, MDPI, vol. 15(9), pages 1-15, April.
    2. Liu, Yunxia & Zhao, Yuanyang & Yang, Qichao & Liu, Guangbin & Li, Liansheng, 2024. "Research on compression process and compressors in supercritical carbon dioxide power cycle systems: A review," Energy, Elsevier, vol. 297(C).

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