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Long-term performance of a front-end capillary heat exchanger for a metro source heat pump system

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  • Ji, Yongming
  • Wu, Wenze
  • Hu, Songtao

Abstract

In recent years, the number of subways has rapidly increased, as they can effectively alleviate urban traffic congestion. However, subways can also result in thermal pollution problems in underground spaces. The long-term operation of a subway causes thermal accumulation in the surrounding rock of a tunnel, severely affecting the safe and efficient operation of the subway. The metro source heat pump technology is an effective approach to address the foregoing problem. However, currently, the research on its systematic design methods remains inadequate. In particular, studies on the evolution law of heat transfer characteristics of its front-end heat exchangers during years of operation are limited.

Suggested Citation

  • Ji, Yongming & Wu, Wenze & Hu, Songtao, 2023. "Long-term performance of a front-end capillary heat exchanger for a metro source heat pump system," Applied Energy, Elsevier, vol. 335(C).
    • Handle: RePEc:eee:appene:v:335:y:2023:i:c:s0306261923001368
    DOI: 10.1016/j.apenergy.2023.120772
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    References listed on IDEAS

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    1. Tong, Li & Liu, Nan & Hu, Songtao & Ji, Yongming & Lu, Shan & Liu, Guodan & Tong, Zhen, 2021. "Study on key design parameters of subway source heat pump system with capillary exchanger," Renewable Energy, Elsevier, vol. 164(C), pages 183-193.
    2. Ji, Yongming & Wu, Wenze & Qi, Haoyu & Wang, Wenqiang & Hu, Songtao, 2022. "Heat transfer performance analysis of front-end capillary heat exchanger of a subway source heat pump system," Energy, Elsevier, vol. 246(C).
    3. Ma, Chunjing & Donna, Alice Di & Dias, Daniel & Zhang, Jiamin, 2021. "Numerical investigations of the tunnel environment effect on the performance of energy tunnels," Renewable Energy, Elsevier, vol. 172(C), pages 1279-1292.
    4. Liu, Guodan & Li, Chuanrui & Hu, Songtao & Ji, Yongming & Tong, Zhen & Wang, Yimei & Tong, Li & Mao, Zhu & Lu, Shan, 2020. "Study on heat transfer model of capillary exchanger in subway source heat pump system," Renewable Energy, Elsevier, vol. 150(C), pages 1074-1088.
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    Citations

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    Cited by:

    1. Ji, Yongming & Shen, Shouheng & Wang, Xinru & Zhang, Hui & Qi, Haoyu & Hu, Songtao, 2024. "Impact of groundwater seepage on thermal performance of capillary heat exchangers in subway tunnel lining," Renewable Energy, Elsevier, vol. 227(C).
    2. Ji, Yongming & Yin, Zhenfeng & Jiao, Jiachen & Hu, Songtao, 2023. "Long-term performance of a subway source heat pump system with two types of front-end heat exchangers," Renewable Energy, Elsevier, vol. 210(C), pages 640-655.
    3. Chen, Zhaoxin & Li, Jiaxuan & Tang, Guoqiang & Zhang, Jiahao & Zhang, Donghai & Gao, Penghui, 2024. "High-efficiency heating and cooling technology with embedded pipes in buildings and underground structures: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 192(C).
    4. Konstantin Osintsev & Sergei Aliukov & Sulpan Kuskarbekova & Tatyana Tarasova & Aleksandr Karelin & Vladimir Konchakov & Olga Kornyakova, 2023. "Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination," Energies, MDPI, vol. 16(13), pages 1-36, June.
    5. Ren, Zhili & Gao, Xiangkui & Wang, Tao & Xiao, Yimin & Zeng, Zhen & Chen, Long & Pang, Yantao & Ma, Yunlong & Xiong, Qian & Chen, Senlin & Ren, Yucheng, 2024. "Numerical study on thermal storage and exothermic characteristics of subway station fresh air shaft surrounding rock," Energy, Elsevier, vol. 293(C).

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