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Thermal performance analysis of supercritical carbon dioxide coal-fired power generation system
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Zhonghe HAN1, 2, Yaping BAI1, 2, Dongxu CHEN1, 2, Dongyang GUO1, 2, Peng LI1, 2
Thermal Power Generation | 2023, 52(6) : 81 - 92
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Thermal Power Generation | 2023, 52(6): 81-92
• Characteristics research on S-CO2 cycle power generation system •
Thermal performance analysis of supercritical carbon dioxide coal-fired power generation system
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Zhonghe HAN1, 2, Yaping BAI1, 2, Dongxu CHEN1, 2, Dongyang GUO1, 2, Peng LI1, 2
Affiliations
  • 1.Hebei Key Laboratory of Low-carbon and Efficient Power Generation Technology, North China Electric Power University, Baoding 071003, China
  • 2.School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Published: 2023-06-25 doi: 10.19666/j.rlfd.202212297
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Based on the first and second laws of thermodynamics, parameters of the supercritical carbon dioxide (S-CO2) recompression cycle, recompression reheat cycle, partial cooling cycle, partial cooling reheat cycle coal-fired power generation system were calculated and analyzed by using MATLAB software. Then, the impact of shunt coefficient, outlet and inlet pressure of the main compressor on the system circulation efficiency, equipment and exergy efficiency of the system were discussed respectively, and the four types of circulation systems were compared and analyzed. The results show that the cycle efficiency varies with the same parameters under different cycle layout or the same cycle layout and different operating parameters. There is a shunt coefficient for exergy efficiency and exergy efficiency to reach an optimal value. There is a coupling relationship between the influence of outlet and inlet pressure of the main compressor and the shunt coefficient on the circulation efficiency. For different parameter changes, exergy efficiency of system is mainly affected by exergy efficiency of different equipment. Reheat can increase circulation efficiency and exergy efficiency of the system, while some cooling cycles are relatively less sensitive to parameter changes.

supercritical carbon dioxide  /  coal-fired power generation system  /  cycle layout  /  cycle efficiency  /  exergy efficiency
Zhonghe HAN, Yaping BAI, Dongxu CHEN, Dongyang GUO, Peng LI. Thermal performance analysis of supercritical carbon dioxide coal-fired power generation system[J]. Thermal Power Generation, 2023 , 52 (6) : 81 -92 . DOI: 10.19666/j.rlfd.202212297
Funding
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  • National Science and Technology Infrastructure Program(2014BAA06B01)
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Year 2023 volume 52 Issue 6
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Article Info
doi: 10.19666/j.rlfd.202212297
  • Receive Date：2022-12-14
  • Online Date：2026-01-23
  • Published：2023-06-25
Article Data
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History
  • Received：2022-12-14
Funding
National Science and Technology Infrastructure Program(2014BAA06B01)
Affiliations
    1.Hebei Key Laboratory of Low-carbon and Efficient Power Generation Technology, North China Electric Power University, Baoding 071003, China
    2.School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202212297
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栓菌属 Trametes 5 2.39
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