IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v256y2026iphs0960148125022748.html

A novel coupled ground heat exchange system: Numerical investigation on heat and moisture transfer characteristics

Author

Listed:
  • Liu, Yajiao
  • Lv, Yuzheng
  • Li, Tao
  • Dai, Xiaosen
  • Zhang, Yuxiao
  • Zhao, Yu
  • Liu, Li
  • Luo, Hao

Abstract

The individual helix ground heat exchanger (HGHE) has a serious thermal interference effect, which seriously affects the heat exchange efficiency. In order to improve the heat transfer performance of HGHE effectually, a novel “LID + HGHE” system was proposed in this paper combining low impact development technology (LID). The corresponding numerical investigation was conducted based on the theory of saturation-unsaturated heat coupled moisture transfer in shallow soil. And three different ground types were simulated and compared through the heat exchange characteristics, temperature distribution and water content distribution of soil. The results indicate that rainwater infiltration for the sunken green ground has more significant effect on alleviating the thermal interference compared with the mudstone ground. Due to the larger soil infiltration coefficient and wider range of rainwater infiltration for sunken green ground, the decrease of water content near the HGHE has been effectively alleviated. The whole pipe of the exchanger in the “LID + HGHE” system can be divided into three stages. The heat flux in three stages is promoted by 36.7 %, 20.2 % and 9.2 % respectively compared with that of mudstone ground type. Thus, the overall heat flux of HGHE for the sunken green ground type is 21.3 % higher than that of the mudstone ground type. The novel “LID + HGHE” system can be used as a priority for the sake of higher efficiency of ground source heat pump in actual engineering projects.

Suggested Citation

  • Liu, Yajiao & Lv, Yuzheng & Li, Tao & Dai, Xiaosen & Zhang, Yuxiao & Zhao, Yu & Liu, Li & Luo, Hao, 2026. "A novel coupled ground heat exchange system: Numerical investigation on heat and moisture transfer characteristics," Renewable Energy, Elsevier, vol. 256(PH).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:ph:s0960148125022748
    DOI: 10.1016/j.renene.2025.124610
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148125022748
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.124610?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

    for a different version of it.

    References listed on IDEAS

    as
    1. Jia, Linrui & Lu, Lin & Chen, Jianheng, 2023. "Exploring the cooling potential maps of a radiative sky cooling radiator-assisted ground source heat pump system in China," Applied Energy, Elsevier, vol. 349(C).
    2. Wei, Wenqi & Yue, Han & Huang, Jiguang & Zhang, Heng & Liu, Haowen & Chen, Haiping & Cheng, Chao, 2025. "Performance analysis and optimization of photovoltaic thermal coupled ground source heat pump system," Energy, Elsevier, vol. 319(C).
    3. Wang, Fang & You, Tian & Cui, Hongzhi, 2024. "Multi-objective optimization and evaluation of the building-integrated photovoltaic/thermal-energy pile ground source heat pump system," Applied Energy, Elsevier, vol. 371(C).
    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. Li, Hongqiang & Zhou, Jie & Cao, Jingyu & Zhao, Misheng & Chen, Jun & Liu, Lifang & Cuce, Erdem & Liu, Wenjie, 2026. "Advances in photovoltaic/thermal assisted ground source heat pump: structural design, material selection, coupling integration, and control strategy optimization," Renewable and Sustainable Energy Reviews, Elsevier, vol. 229(C).
    2. Yue, Naihua & Li, Lingling & Xu, Congbao, 2025. "Multi-objective optimization of a hybrid PVT assisted ground source and air source heat pump system for large space buildings using transient metamodel," Energy, Elsevier, vol. 328(C).
    3. Lai, Yang-Yan & Yang, Sheng & Fan, Li-Wu, 2025. "Analysis and optimization of the performance of a solar PV/T system integrated with seasonal latent heat storage for decarbonized heating and hot water supply," Energy, Elsevier, vol. 331(C).
    4. Yang, Qian & Tian, Ming & Li, Li & Deng, Hongying, 2026. "Fuzzy chance-constrained multi-objective optimization of configuration and operation of building-photovoltaics-assisted distributed energy system under source-load uncertainties," Renewable Energy, Elsevier, vol. 256(PF).
    5. Jiang, Duhui & Zhang, Jili & Guo, Xiaochao & Han, Youhua & Lou, Lanting & Jia, Wei, 2025. "Research on the heating, electrical, and cooling operation performance and economy of the PVT heat pump soil cross-seasonal energy storage system," Energy, Elsevier, vol. 341(C).
    6. Li, Manfeng & Wang, Mengmeng & Shi, Ping & Zhou, Guofeng & Lu, Yiji, 2025. "Techno-economic-environmental assessment and optimization of multi-energy complementary systems under dynamic building loads," Energy, Elsevier, vol. 338(C).
    7. Jianheng Chen & Lin Lu & Linrui Jia & Quan Gong, 2023. "Performance Evaluation of High-Rise Buildings Integrated with Colored Radiative Cooling Walls in a Hot and Humid Region," Sustainability, MDPI, vol. 15(16), pages 1-17, August.
    8. Li, Tao & Wang, Xing & Yu, Yingying & Fu, Qiang & Chen, Min & Xu, Chengliang & Gao, Jiajia & Li, Guannan & Mao, Qianjun, 2024. "Performance and PV benefits analysis of multi-source renewable energy systems for different types of buildings on university campus," Renewable Energy, Elsevier, vol. 237(PA).
    9. Kai Jiao & Lin Lu & Liang Zhao & Gang Wang, 2024. "Towards Passive Building Thermal Regulation: A State-of-the-Art Review on Recent Progress of PCM-Integrated Building Envelopes," Sustainability, MDPI, vol. 16(15), pages 1-27, July.
    10. Yan, Tian & Xu, Dawei & Meng, Jing & Xu, Xinhua & Yu, Zhongyi & Wu, Huijun, 2024. "A review of radiative sky cooling technology and its application in building systems," Renewable Energy, Elsevier, vol. 220(C).
    11. Rui-Jia Liu & Lin-Rui Jia & Wen-Shuo Zhang & Ming-Zhi Yu & Xu-Dong Zhao & Ping Cui, 2024. "Study of Heat Transfer Characteristics and Economic Analysis of a Closed Deep Coaxial Geothermal Heat Exchanger Retrofitted from an Abandoned Oil Well," Sustainability, MDPI, vol. 16(4), pages 1-21, February.
    12. Jia, Linrui & Lu, Lin & Gong, Quan & Jiao, Kai, 2024. "Analytical and experimental analyses on cooling performances of radiative SkyCool radiators with various interior flowing channels," Energy, Elsevier, vol. 295(C).
    13. Mauro, Alfonso William & Passarelli, Adelso Flaviano & Pelella, Francesco & Viscito, Luca, 2025. "Life-cycle thermo-economic-environmental analysis of a PV-driven heat pump with and without refrigerant leakages," Energy, Elsevier, vol. 323(C).
    14. Ma, Qijie & Lu, Jianbo & Jia, Jiandong & Fan, Jianhua, 2026. "Model predictive control of energy pile-based space heating and cooling systems under future weather conditions," Renewable Energy, Elsevier, vol. 256(PB).
    15. Ju, Hengjin & Li, Xiangli, 2025. "Multi-objective optimization of phase change material radiant floor coupled ground source heat pump under future climate scenarios," Energy, Elsevier, vol. 333(C).
    16. Chen, Yingxue & Chi, Haoran & Ji, Zhixing & Li, Guang & Gou, Linfeng, 2025. "Optimal control and operation strategy for an integrated photovoltaic/thermal-pressure retarded osmosis-solid oxide fuel cell system," Renewable Energy, Elsevier, vol. 254(C).
    17. Liang, Yan & Zhang, Weiyi & Yang, Haibing & Liu, Junwei & Zhou, Yifan & Cui, Hongzhi & Yan, Jinyue, 2025. "Bridging the critical gaps of radiative sky cooling: From lab to applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 222(C).
    18. Wang, Fenggang & Guo, Jiwei & Ke, Menglian & Zheng, Yijia & Zheng, Wenke & Jiang, Yiqiang, 2025. "Experimental investigation on cooling performance in high radiative temperature of energy-storage radiative cooling panel," Energy, Elsevier, vol. 332(C).

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    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:renene:v:256:y:2026:i:ph:s0960148125022748. 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/renewable-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.