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Study on key design parameters of subway source heat pump system with capillary exchanger

Author

Listed:
  • Tong, Li
  • Liu, Nan
  • Hu, Songtao
  • Ji, Yongming
  • Lu, Shan
  • Liu, Guodan
  • Tong, Zhen

Abstract

As an emerging subway waste heat utilization system, capillary network subway source heat pump system has high practical value. At present, there are many researches on capillary network heat exchanger, but little research has been done on the influencing factors and design optimization of the entire system. The orthogonal test method is used to determine the key design parameters affecting the subway source heat pump system. The multi-factor analysis method is used to optimize the system design. The results show that the key design parameters that affect the subway source heat pump system are the cooling and heating load ratio and the flow velocity in the capillary tube. Meanwhile in the future system design, the range of the cold-heat load ratio of the subway source heat pump system is between 1: 1.5 and 1: 2.5 and the flow velocity in the capillary tube is between 0.05 m/s and 0.09 m/s, which can be used as a reference for system design.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:164:y:2021:i:c:p:183-193
    DOI: 10.1016/j.renene.2020.09.038
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    References listed on IDEAS

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    1. Ninikas, Konstantinos & Hytiris, Nicholas & Emmanuel, Rohinton & Aaen, Bjorn & Younger, Paul L., 2016. "Heat recovery from air in underground transport tunnels," Renewable Energy, Elsevier, vol. 96(PA), pages 843-849.
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    Cited by:

    1. Ji, Yongming & Wang, Wenqiang & Fan, Yujing & Hu, Songtao, 2023. "Coupling effect between tunnel lining heat exchanger and subway thermal environment," Renewable Energy, Elsevier, vol. 217(C).
    2. 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).
    3. 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.
    4. Zheng, Wandong & Yin, Hao & Li, Bojia & Zhang, Huan & Jurasz, Jakub & Zhong, Lei, 2022. "Heating performance and spatial analysis of seawater-source heat pump with staggered tube-bundle heat exchanger," Applied Energy, Elsevier, vol. 305(C).
    5. 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).
    6. 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).
    7. Jingnan Liu & Lixin Zhang & Yongbao Chen & Zheng Yin & Yan Shen & Yuedong Sun, 2022. "Study of the Technologies for Freeze Protection of Cooling Towers in the Solar System," Energies, MDPI, vol. 15(24), pages 1-11, December.

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