IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v290y2024ics0360544223034928.html
   My bibliography  Save this article

Thermo-economic analysis of regenerative supercritical CO2 Brayton cycle considering turbomachinery leakage flow

Author

Listed:
  • Feng, Jiaqi
  • Wang, Junpeng
  • Chen, Zhentao
  • Luo, Zhengyuan
  • Bai, Bofeng

Abstract

The regenerative supercritical CO2 Brayton cycle (RSCBC) has great potential to improve the energy utilization efficiency and reduce greenhouse gas emissions. The leakage of supercritical CO2 into rotor cavity through labyrinth seals in turbomachinery including turbine and compressor inevitably reduces the cycle efficiency. Here, we propose a numerical method coupling the thermodynamic model with the labyrinth seal leakage model. The variations of turbomachinery leakage flow with cycle parameters and its effect on cycle thermo-economic performance are investigated. The optimal cycle parameters and thermo-economic performance are obtained by the multi-objective optimization. We find the cycle maximum pressure benefits the thermo-economic performance, while penalizes the sealing performance of turbomachinery labyrinth seal. Compared with ignoring the turbomachinery leakage, the optimal inlet state of the compressor vicinity of the pseudo-critical point that is adjacent to critical point when considering turbomachinery leakage. Furthermore, the turbomachinery leakage flow accounted for 2.5 % of the total flow under the optimized working condition, causing the thermal efficiency and exergy efficiency decrease 1.38 % and 3.52 % respectively, the heat exchanger area per unit power output and levelized energy cost increase 3.8 % and 3.83 % respectively. The proposed method and obtained results can provide some guidance for the optimal design of RSCBC system.

Suggested Citation

  • Feng, Jiaqi & Wang, Junpeng & Chen, Zhentao & Luo, Zhengyuan & Bai, Bofeng, 2024. "Thermo-economic analysis of regenerative supercritical CO2 Brayton cycle considering turbomachinery leakage flow," Energy, Elsevier, vol. 290(C).
    • Handle: RePEc:eee:energy:v:290:y:2024:i:c:s0360544223034928
    DOI: 10.1016/j.energy.2023.130098
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223034928
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.130098?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Kim, Sunjin & Cho, Yeonjoo & Kim, Min Soo & Kim, Minsung, 2018. "Characteristics and optimization of supercritical CO2 recompression power cycle and the influence of pinch point temperature difference of recuperators," Energy, Elsevier, vol. 147(C), pages 1216-1226.
    2. Xiao, Tingyu & Liu, Chao & Wang, Xurong & Wang, Shukun & Xu, Xiaoxiao & Li, Qibin & Li, Xiaoxiao, 2022. "Life cycle assessment of the solar thermal power plant integrated with air-cooled supercritical CO2 Brayton cycle," Renewable Energy, Elsevier, vol. 182(C), pages 119-133.
    3. Iverson, Brian D. & Conboy, Thomas M. & Pasch, James J. & Kruizenga, Alan M., 2013. "Supercritical CO2 Brayton cycles for solar-thermal energy," Applied Energy, Elsevier, vol. 111(C), pages 957-970.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Guo, Jiangfeng, 2016. "Design analysis of supercritical carbon dioxide recuperator," Applied Energy, Elsevier, vol. 164(C), pages 21-27.
    2. Brian T. White & Michael J. Wagner & Ty Neises & Cory Stansbury & Ben Lindley, 2021. "Modeling of Combined Lead Fast Reactor and Concentrating Solar Power Supercritical Carbon Dioxide Cycles to Demonstrate Feasibility, Efficiency Gains, and Cost Reductions," Sustainability, MDPI, vol. 13(22), pages 1-24, November.
    3. Wang, Xiaohe & Liu, Qibin & Bai, Zhang & Lei, Jing & Jin, Hongguang, 2018. "Thermodynamic investigations of the supercritical CO2 system with solar energy and biomass," Applied Energy, Elsevier, vol. 227(C), pages 108-118.
    4. Kim, Min Seok & Ahn, Yoonhan & Kim, Beomjoo & Lee, Jeong Ik, 2016. "Study on the supercritical CO2 power cycles for landfill gas firing gas turbine bottoming cycle," Energy, Elsevier, vol. 111(C), pages 893-909.
    5. Liu, Jian & Xu, Yantao & Zhang, Yaning & Shuai, Yong & Li, Bingxi, 2022. "Multi-objective optimization of low temperature cooling water organic Rankine cycle using dual pinch point temperature difference technologies," Energy, Elsevier, vol. 240(C).
    6. Wang, Shengpeng & Zhang, Yifan & Li, Hongzhi & Yao, Mingyu & Peng, Botao & Yan, Junjie, 2020. "Thermohydrodynamic analysis of the vertical gas wall and reheat gas wall in a 300 MW supercritical CO2 boiler," Energy, Elsevier, vol. 211(C).
    7. Wang, Kun & He, Ya-Ling & Zhu, Han-Hui, 2017. "Integration between supercritical CO2 Brayton cycles and molten salt solar power towers: A review and a comprehensive comparison of different cycle layouts," Applied Energy, Elsevier, vol. 195(C), pages 819-836.
    8. Ephraim Bonah Agyekum & Tomiwa Sunday Adebayo & Festus Victor Bekun & Nallapaneni Manoj Kumar & Manoj Kumar Panjwani, 2021. "Effect of Two Different Heat Transfer Fluids on the Performance of Solar Tower CSP by Comparing Recompression Supercritical CO 2 and Rankine Power Cycles, China," Energies, MDPI, vol. 14(12), pages 1-19, June.
    9. Zhao, Yongming & Zhao, Lifeng & Wang, Bo & Zhang, Shijie & Chi, Jinling & Xiao, Yunhan, 2018. "Thermodynamic analysis of a novel dual expansion coal-fueled direct-fired supercritical carbon dioxide power cycle," Applied Energy, Elsevier, vol. 217(C), pages 480-495.
    10. Li, Hongzhi & Zhang, Yifan & Yao, Mingyu & Yang, Yu & Han, Wanlong & Bai, Wengang, 2019. "Design assessment of a 5 MW fossil-fired supercritical CO2 power cycle pilot loop," Energy, Elsevier, vol. 174(C), pages 792-804.
    11. Hassan, Muhammed A. & Fouad, Aya & Dessoki, Khaled & Al-Ghussain, Loiy & Hamed, Ahmed, 2023. "Performance analyses of supercritical carbon dioxide-based parabolic trough collectors with double-glazed receivers," Renewable Energy, Elsevier, vol. 215(C).
    12. Li, Ligeng & Tian, Hua & Liu, Peng & Shi, Lingfeng & Shu, Gequn, 2021. "Optimization of CO2 Transcritical Power Cycle (CTPC) for engine waste heat recovery based on split concept," Energy, Elsevier, vol. 229(C).
    13. Crespi, Francesco & Gavagnin, Giacomo & Sánchez, David & Martínez, Gonzalo S., 2017. "Supercritical carbon dioxide cycles for power generation: A review," Applied Energy, Elsevier, vol. 195(C), pages 152-183.
    14. Al-Sulaiman, Fahad A. & Atif, Maimoon, 2015. "Performance comparison of different supercritical carbon dioxide Brayton cycles integrated with a solar power tower," Energy, Elsevier, vol. 82(C), pages 61-71.
    15. Zhou, Yujia & Zhang, Yifan & Li, Hongzhi & Li, Kailun & Yang, Yu & Sun, Shan & Wu, Shuaishuai, 2024. "Off-design operation of supercritical CO2 Brayton cycle arranged with single and multiple turbomachinery shafts for lead-cooled fast reactor," Energy, Elsevier, vol. 299(C).
    16. Ma, Yuan & Xie, Gongnan & Hooman, Kamel, 2022. "Review of printed circuit heat exchangers and its applications in solar thermal energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 155(C).
    17. Cheng, Kunlin & Li, Jiahui & Yu, Jianchi & Fu, Chuanjie & Qin, Jiang & Jing, Wuxing, 2023. "Novel thermoelectric generator enhanced supercritical carbon dioxide closed-Brayton-cycle power generation systems: Performance comparison and configuration optimization," Energy, Elsevier, vol. 284(C).
    18. Qin, Lei & Xie, Gongnan & Ma, Yuan & Li, Shulei, 2023. "Thermodynamic analysis and multi-objective optimization of a waste heat recovery system with a combined supercritical/transcritical CO2 cycle," Energy, Elsevier, vol. 265(C).
    19. Long, Huan & Zhang, Zijun & Su, Yan, 2014. "Analysis of daily solar power prediction with data-driven approaches," Applied Energy, Elsevier, vol. 126(C), pages 29-37.
    20. Hanak, Dawid P. & Manovic, Vasilije, 2016. "Calcium looping with supercritical CO2 cycle for decarbonisation of coal-fired power plant," Energy, Elsevier, vol. 102(C), pages 343-353.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:290:y:2024:i:c:s0360544223034928. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.