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Design and performance analysis of a novel solar polygeneration system based on S-CO2 Brayton cycle
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Gang WANG, Chenxu XU, Chuntian GAO
Thermal Power Generation | 2026, 55(3) : 1 - 5
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Thermal Power Generation | 2026, 55(3): 1-5
• Thermal Energy Science Research •
Design and performance analysis of a novel solar polygeneration system based on S-CO2 Brayton cycle
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Gang WANG, Chenxu XU, Chuntian GAO
Affiliations
  • School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China
Published: 2026-03-25 doi: 10.19666/j.rlfd.202505077
Outline
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[Objective]

To improve the comprehensive energy utilization efficiency of solar thermal power generation, this paper presents a novel linear Fresnel reflector (LFR) concentrated solar polygeneration system using supercritical carbon dioxide (S-CO2) Brayton cycle and organic Rankine cycle (ORC), which is designed for producing electricity, fresh water and hydrogen.

[Methods]

By using the Ebsilon code, the operation performance of the polygeneration system is investigated.

[Results]

The results show that the output power and Brayton cycle efficiency of the polygeneration system are 50.0 MW and 44.0%, respectively. The hydrogen production rate and freshwater production rate of the polygeneration system are 18.34 kg/h and 311.61 t/h, respectively. The LFR solar section, Brayton cycle, ORC hydrogen production section and multistage flash desalination facility can achieve the coordinated operation effectively during a long term.

[Conclusion]

The economic performance evaluation results show that for the polygeneration system, its levelized costs of electricity, hydrogen and freshwater are 0.72 yuan/(kW·h), 28.8 yuan/kg and 7.75 yuan/t, respectively, revealing the economic feasibility of the polygeneration system.

polygeneration system  /  supercritical carbon dioxide  /  Brayton cycle  /  multistage flash desalination  /  hydrogen production  /  solar power generation
Gang WANG, Chenxu XU, Chuntian GAO. Design and performance analysis of a novel solar polygeneration system based on S-CO2 Brayton cycle[J]. Thermal Power Generation, 2026 , 55 (3) : 1 -5 . DOI: 10.19666/j.rlfd.202505077
Funding
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  • National Natural Science Foundation of China(12305175)
Appendix
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Year 2026 volume 55 Issue 3
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Article Info
doi: 10.19666/j.rlfd.202505077
  • Receive Date：2025-05-17
  • Online Date：2026-08-14
  • Published：2026-03-25
Article Data
Affiliations
History
  • Received：2025-05-17
  • Revised：2025-06-07
  • Accepted：2025-06-16
Funding
National Natural Science Foundation of China(12305175)
Affiliations
    School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202505077
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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