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Thermal performance analysis of high-parameter gas turbine and supercritical carbon dioxide combined cycle system
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Zifang ZHU, Jinyuan SHI, Chengyi ZHANG, Wangren XU
Thermal Power Generation | 2023, 52(6) : 100 - 108
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Thermal Power Generation | 2023, 52(6): 100-108
• Characteristics research on S-CO2 cycle power generation system •
Thermal performance analysis of high-parameter gas turbine and supercritical carbon dioxide combined cycle system
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Zifang ZHU, Jinyuan SHI, Chengyi ZHANG, Wangren XU
Affiliations
  • Shanghai Power Equipment Research Institute Co, Ltd, Shanghai 200240, China
Published: 2023-06-25 doi: 10.19666/j.rlfd.202212286
Outline
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A high-parameter gas turbine and supercritical carbon dioxide (S-CO2) combined cycle model was constructed, and thermal performance analysis was carried out. The top cycle uses a high-parameter gas turbine with a combustion chamber exhaust temperature of 1 800 ℃, and the bottom cycle adopts S-CO2 Rankine double turbine cycle, while using three-stage flue gas heating and two-stage turbine exhaust gas recovery. The parameters and thermal performance under the optimized combined cycle operating conditions are obtained by the penalty function method. The influences of the main parameters of the high-parameter gas turbine top cycle and S-CO2 Rankine bottom cycle on the combined cycle performance is analyzed. The results show that the combined cycle thermal efficiency can reach 68.61% at the gas turbine pressure ratio of 35.5 and the combustion chamber outlet temperature of 1 800 ℃, and the efficiency of the combined cycle of the gas turbine and S-CO2 is 2.3 percentage points higher than that of the combined cycle of the gas turbine and steam.

gas turbine  /  supercritical carbon dioxide  /  Rankine cycle  /  combined cycle  /  thermal efficiency
Zifang ZHU, Jinyuan SHI, Chengyi ZHANG, Wangren XU. Thermal performance analysis of high-parameter gas turbine and supercritical carbon dioxide combined cycle system[J]. Thermal Power Generation, 2023 , 52 (6) : 100 -108 . DOI: 10.19666/j.rlfd.202212286
Funding
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  • Basic Science Center Project of Aero Engine and Gas Turbine(P2021-A-I-003-002)
  • Aero Engine and Gas Turbine Major Special Basic Research Project(J2019-V-0014-0109)
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Year 2023 volume 52 Issue 6
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Article Info
doi: 10.19666/j.rlfd.202212286
  • Receive Date：2022-12-08
  • Online Date：2026-01-23
  • Published：2023-06-25
Article Data
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History
  • Received：2022-12-08
Funding
Basic Science Center Project of Aero Engine and Gas Turbine(P2021-A-I-003-002)
Aero Engine and Gas Turbine Major Special Basic Research Project(J2019-V-0014-0109)
Affiliations
    Shanghai Power Equipment Research Institute Co, Ltd, Shanghai 200240, China
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