Home Journals Articles Updates About
CN
image
收藏切换
Performance study for supercritical carbon dioxide Brayton cycle with two-stage compression
收藏切换
PDF
Jiahui JIANG, Yongqiang YU, Yuanyang ZHAO
Thermal Power Generation | 2025, 54(9) : 110 - 117
Less
收藏切换
Thermal Power Generation | 2025, 54(9): 110-117
• Special topic on low carbon power technology •
Performance study for supercritical carbon dioxide Brayton cycle with two-stage compression
Full
Jiahui JIANG, Yongqiang YU, Yuanyang ZHAO
Affiliations
  • College of Electro mechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
Published: 2025-09-25 doi: 10.19666/j.rlfd.202411219
Outline
收藏切换

For a supercritical carbon dioxide (S-CO2) recompression Brayton (RB) system with two-stage compression and intercooling process, two system models with different layouts are constructed. The effects of key parameters such as low-pressure stage pressure ratio and split ratio on the system performance are explored. The results indicate that, the minimum and optimum splitting ratios exist for the RB cycle, the two-stage compression cycle of the main compressor (TCIP-RB), and the two-stage compression cycle of the recompressor (RTCIP-RB) under the design conditions. Moreover, the thermal efficiency of the TCIP-RB cycle is higher than that of the other two cycles within a certain range of split ratios. When the above three systems adopt the optimal split ratios, the maximum efficiency of the TCIP-RB cycle is 50.95%, which surpasses that of the RB and RTCIP-RB cycle by 3.20% and 3.98%, respectively. At different low-pressure stage pressure ratios, TCIP-RB and RTCIP-RB cycles have an optimal split ratio to maximize the thermal efficiency of the system, and the maximum thermal efficiency decreases with the increase of the low-pressure stage pressure ratio.

supercritical carbon dioxide  /  Brayton cycle  /  two-stage compression  /  intercooling  /  low-pressure stage pressure ratio
Jiahui JIANG, Yongqiang YU, Yuanyang ZHAO. Performance study for supercritical carbon dioxide Brayton cycle with two-stage compression[J]. Thermal Power Generation, 2025 , 54 (9) : 110 -117 . DOI: 10.19666/j.rlfd.202411219
Funding
Less
  • National Natural Science Foundation of China(52076114)
  • Natural Science Foundation of Shandong Province(ZR2020ME168)
Appendix
Less
Year 2025 volume 54 Issue 9
PDF
156
69
Cite this Article
BibTeX
Article Info
doi: 10.19666/j.rlfd.202411219
  • Receive Date：2024-11-05
  • Online Date：2026-03-05
  • Published：2025-09-25
Article Data
Affiliations
History
  • Received：2024-11-05
Funding
National Natural Science Foundation of China(52076114)
Natural Science Foundation of Shandong Province(ZR2020ME168)
Affiliations
    College of Electro mechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
References
Share
https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202411219
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
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
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House