IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v277y2023ics0360544223010708.html
   My bibliography  Save this article

An optimal split ratio in design and control of a recompression supercritical CO2 Brayton system

Author

Listed:
  • Wang, Rui
  • Wang, Xuan
  • Bian, Xingyan
  • Zhang, Xuanang
  • Cai, Jinwen
  • Tian, Hua
  • Shu, Gequn
  • Wang, Mingtao

Abstract

The sCO2 Brayton cycle is considered an alternative to the conventional Brayton and Rankine cycles. The recompression Brayton cycle is advantageous because of its simple cycle layout and high cycle efficiency. The split ratio (SR) is defined as the recompression fraction of the working fluid that significantly affects the corresponding parameters of the system, particularly the cycle efficiency. However, studies focusing on the influence of SR on the design and off-design performance remain limited. The factors influencing the optimal SR and regulation mechanism under the design and off-design conditions of recompression cycle are considered in this study. The results demonstrate that the optimal SR under the design conditions is primarily affected by the high pressure, low pressure and efficiency of the recuperators. The optimal SR decreases with a reduction in the load demand, and the recompression loop can be cut off under a low load to improve the cycle efficiency. A simplified control can be achieved by controlling the temperature difference at the flow merge point to achieve a higher system efficiency. Moreover, the SR regulation mechanism is unaffected by the load control method. These findings are of significance to recompression configuration with different design parameters.

Suggested Citation

  • Wang, Rui & Wang, Xuan & Bian, Xingyan & Zhang, Xuanang & Cai, Jinwen & Tian, Hua & Shu, Gequn & Wang, Mingtao, 2023. "An optimal split ratio in design and control of a recompression supercritical CO2 Brayton system," Energy, Elsevier, vol. 277(C).
    • Handle: RePEc:eee:energy:v:277:y:2023:i:c:s0360544223010708
    DOI: 10.1016/j.energy.2023.127676
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223010708
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.127676?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. Wang, Rui & Wang, Xuan & Shu, Gequn & Tian, Hua & Cai, Jinwen & Bian, Xingyan & Li, Xinyu & Qin, Zheng & Shi, Lingfeng, 2022. "Comparison of different load-following control strategies of a sCO2 Brayton cycle under full load range," Energy, Elsevier, vol. 246(C).
    2. 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.
    3. Park, Joo Hyun & Park, Hyun Sun & Kwon, Jin Gyu & Kim, Tae Ho & Kim, Moo Hwan, 2018. "Optimization and thermodynamic analysis of supercritical CO2 Brayton recompression cycle for various small modular reactors," Energy, Elsevier, vol. 160(C), pages 520-535.
    4. Liu, Yaping & Wang, Ying & Huang, Diangui, 2019. "Supercritical CO2 Brayton cycle: A state-of-the-art review," Energy, Elsevier, vol. 189(C).
    5. Ma, Yuegeng & Morozyuk, Tatiana & Liu, Ming & Yan, Junjie & Liu, Jiping, 2019. "Optimal integration of recompression supercritical CO2 Brayton cycle with main compression intercooling in solar power tower system based on exergoeconomic approach," Applied Energy, Elsevier, vol. 242(C), pages 1134-1154.
    6. Mecheri, Mounir & Le Moullec, Yann, 2016. "Supercritical CO2 Brayton cycles for coal-fired power plants," Energy, Elsevier, vol. 103(C), pages 758-771.
    7. Correa, Faustino & Barraza, Rodrigo & Soo Too, Yen Chean & Vasquez Padilla, Ricardo & Cardemil, José M., 2021. "Optimized operation of recompression sCO2 Brayton cycle based on adjustable recompression fraction under variable conditions," Energy, Elsevier, vol. 227(C).
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Gabriel Mocanu & Cristian Iosifescu & Ion V. Ion & Florin Popescu & Michael Frătița & Robert Mădălin Chivu, 2024. "Energy Analysis of Waste Heat Recovery Using Supercritical CO 2 Brayton Cycle for Series Hybrid Electric Vehicles," Energies, MDPI, vol. 17(11), pages 1-17, May.

    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. Muhammad, Hafiz Ali & Cho, Junhyun & Cho, Jongjae & Choi, Bongsu & Roh, Chulwoo & Ishfaq, Hafiz Ahmad & Lee, Gilbong & Shin, Hyungki & Baik, Young-Jin & Lee, Beomjoon, 2022. "Performance improvement of supercritical carbon dioxide power cycle at elevated heat sink temperatures," Energy, Elsevier, vol. 239(PD).
    2. 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).
    3. Yang, Jingze & Yang, Zhen & Duan, Yuanyuan, 2022. "A review on integrated design and off-design operation of solar power tower system with S–CO2 Brayton cycle," Energy, Elsevier, vol. 246(C).
    4. Kunniyoor, Vijayaraj & Singh, Punit & Nadella, Karthik, 2020. "Value of closed-cycle gas turbines with design assessment," Applied Energy, Elsevier, vol. 269(C).
    5. Sleiti, Ahmad K. & Al-Ammari, Wahib A., 2021. "Off-design performance analysis of combined CSP power and direct oxy-combustion supercritical carbon dioxide cycles," Renewable Energy, Elsevier, vol. 180(C), pages 14-29.
    6. Penkuhn, Mathias & Tsatsaronis, George, 2020. "Systematic evaluation of efficiency improvement options for sCO2 Brayton cycles," Energy, Elsevier, vol. 210(C).
    7. Olumayegun, Olumide & Wang, Meihong & Oko, Eni, 2019. "Thermodynamic performance evaluation of supercritical CO2 closed Brayton cycles for coal-fired power generation with solvent-based CO2 capture," Energy, Elsevier, vol. 166(C), pages 1074-1088.
    8. Gao, Lei & Cao, Tao & Hwang, Yunho & Radermacher, Reinhard, 2022. "Robustness analysis in supercritical CO2 power generation system configuration optimization," Energy, Elsevier, vol. 242(C).
    9. Ma, Yuegeng & Morosuk, Tatiana & Liu, Ming & Liu, Jiping, 2020. "Development and comparison of control schemes for the off-design operation of a recompression supercritical CO2 cycle with an intercooled main compressor," Energy, Elsevier, vol. 211(C).
    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. Tong, Yongjing & Duan, Liqiang & Yang, Ming & Pang, Liping, 2022. "Design optimization of a new supercritical CO2 single reheat coal-fired power generation system," Energy, Elsevier, vol. 239(PB).
    12. Fan, Gang & Lu, Xiaochen & Chen, Kang & Zhang, Yicen & Han, Zihao & Yu, Haibin & Dai, Yiping, 2022. "Comparative analysis on design and off-design performance of novel cascade CO2 combined cycles for gas turbine waste heat utilization," Energy, Elsevier, vol. 254(PA).
    13. Son, Seongmin & Lee, Jeong Ik, 2018. "Application of adjoint sensitivity analysis method to supercritical CO2 power cycle optimization," Energy, Elsevier, vol. 147(C), pages 1153-1164.
    14. Xu, Zhen & Liu, Xinxin & Xie, Yingchun, 2023. "Off-design performances of a dry-cooled supercritical recompression Brayton cycle using CO2–H2S as working fluid," Energy, Elsevier, vol. 276(C).
    15. Fallah, M. & Mohammadi, Z. & Mahmoudi, S.M. Seyed, 2022. "Advanced exergy analysis of the combined S–CO2/ORC system," Energy, Elsevier, vol. 241(C).
    16. Bai, Wengang & Li, Hongzhi & Zhang, Lei & Zhang, Yifan & Yang, Yu & Zhang, Chun & Yao, Mingyu, 2021. "Energy and exergy analyses of an improved recompression supercritical CO2 cycle for coal-fired power plant," Energy, Elsevier, vol. 222(C).
    17. Li, Zhaozhi & Shao, Yingjuan & Zhong, Wenqi & Liu, Hao, 2023. "Optimal design and thermodynamic evaluation of supercritical CO2 oxy-coal circulating fluidized bed power generation systems," Energy, Elsevier, vol. 277(C).
    18. Sadeghi, Mohsen & Seyed Mahmoudi, Seyed Mohammad & Rosen, Marc A., 2022. "Thermoeconomic analysis of two solid oxide fuel cell based cogeneration plants integrated with simple or modified supercritical CO2 Brayton cycles: A comparative study," Energy, Elsevier, vol. 259(C).
    19. Du, Yadong & Hu, Chenxing & Yang, Ce & Wang, Haimei & Dong, Wuqiang, 2022. "Size optimization of heat exchanger and thermoeconomic assessment for supercritical CO2 recompression Brayton cycle applied in marine," Energy, Elsevier, vol. 239(PD).
    20. Andrey Rogalev & Vladimir Kindra & Ivan Komarov & Sergey Osipov & Olga Zlyvko, 2021. "Structural and Parametric Optimization of S-CO 2 Thermal Power Plants with a Pulverized Coal-Fired Boiler Operating in Russia," Energies, MDPI, vol. 14(21), pages 1-20, November.

    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:277:y:2023:i:c:s0360544223010708. 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.