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Analysis of heat extraction performance and long-term sustainability for multiple deep borehole heat exchanger array: A project-based study

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  • Cai, Wanlong
  • Wang, Fenghao
  • Chen, Shuang
  • Chen, Chaofan
  • Liu, Jun
  • Deng, Jiewen
  • Kolditz, Olaf
  • Shao, Haibing

Abstract

In the context of reducing carbon emission, Deep Borehole Heat Exchanger (DBHE) array has a large potential in extracting geothermal energy to provide building heating in densely populated urban areas. To investigate the thermal interaction among the DBHE, a comprehensive numerical model has been built with the OpenGeoSys software, and it is validated by monitoring data from a pilot project in Xi’an, China. The long-term simulations manifest that the outlet temperature of the DBHE array has a noticeable draw-down of 4.70°C over 20 years in comparison to the single borehole setup. The maximum difference of outlet temperature among individual DBHE can reach up to 0.88°C over 20 years, which will lead to a shifted thermal load of 23.35kW (12.25% of the designed average value). Based on the predicted subsurface temperature distribution, a non-linear correlation can be established between the drawdown in working fluid temperature and the accumulated amount of extracted heat. The finding of work implies that the thermal interaction among individual DBHE is of significance for the sustainability of the system, and comprehensive numerical modeling should be considered in the designing procedure.

Suggested Citation

  • Cai, Wanlong & Wang, Fenghao & Chen, Shuang & Chen, Chaofan & Liu, Jun & Deng, Jiewen & Kolditz, Olaf & Shao, Haibing, 2021. "Analysis of heat extraction performance and long-term sustainability for multiple deep borehole heat exchanger array: A project-based study," Applied Energy, Elsevier, vol. 289(C).
    • Handle: RePEc:eee:appene:v:289:y:2021:i:c:s0306261921001331
    DOI: 10.1016/j.apenergy.2021.116590
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    Cited by:

    1. Li, Jianwei & Bao, Lingling & Niu, Guoqing & Miao, Zhuang & Guo, Xiaokai & Wang, Weilian, 2024. "Research on renewable energy coupling system based on medium-deep ground temperature attenuation," Applied Energy, Elsevier, vol. 353(PB).
    2. Zhang, Sheng & Liu, Jun & Wang, Fenghao & Chai, Jiale, 2023. "Design optimization of medium-deep borehole heat exchanger for building heating under climate change," Energy, Elsevier, vol. 282(C).
    3. Niu, Qinghe & Ma, Kaiyuan & Wang, Wei & Pan, Jienan & Wang, Qizhi & Du, Zhigang & Wang, Zhenzhi & Yuan, Wei & Zheng, Yongxiang & Shangguan, Shuantong & Qi, Xiaofei & Pan, Miaomiao & Ji, Zhongmin, 2023. "Multifactor analysis of heat extraction performance of coaxial heat exchanger applied to hot dry rock resources exploration: A case study in matouying uplift, Tangshan, China," Energy, Elsevier, vol. 282(C).
    4. Huang, Shuai & Li, Jiqin & Gao, Hu & Dong, Jiankai & Jiang, Yiqiang, 2024. "Thermal performance of medium-deep U-type borehole heat exchanger based on a novel numerical model considering groundwater seepage," Renewable Energy, Elsevier, vol. 222(C).
    5. Xiangxi Qin & Yazhou Zhao & Chengjun Dai & Jian Wei & Dahai Xue, 2022. "Thermal Performance Analysis on the Seasonal Heat Storage by Deep Borehole Heat Exchanger with the Extended Finite Line Source Model," Energies, MDPI, vol. 15(22), pages 1-38, November.
    6. Zhang, Fangfang & Yu, Mingzhi & Sørensen, Bjørn R. & Cui, Ping & Zhang, Wenke & Fang, Zhaohong, 2022. "Heat extraction capacity and its attenuation of deep borehole heat exchanger array," Energy, Elsevier, vol. 254(PA).
    7. Brown, Christopher S. & Kolo, Isa & Falcone, Gioia & Banks, David, 2023. "Investigating scalability of deep borehole heat exchangers: Numerical modelling of arrays with varied modes of operation," Renewable Energy, Elsevier, vol. 202(C), pages 442-452.
    8. Deng, Jiewen & Su, Yangyang & Peng, Chenwei & Qiang, Wenbo & Cai, Wanlong & Wei, Qingpeng & Zhang, Hui, 2023. "How to improve the energy performance of mid-deep geothermal heat pump systems: Optimization of heat pump, system configuration and control strategy," Energy, Elsevier, vol. 285(C).
    9. Haijiang Zou & Siyu Guo & Ruifeng Wang & Fenghao Wang & Zhenxing Shen & Wanlong Cai, 2023. "Numerical Investigation of the Long-Term Load Shifting Behaviors within the Borehole Heat Exchanger Array System," Energies, MDPI, vol. 16(5), pages 1-19, March.
    10. Deng, Jiewen & Peng, Chenwei & Su, Yangyang & Qiang, Wenbo & Cai, Wanlong & Wei, Qingpeng, 2023. "Research on the heat storage characteristic of deep borehole heat exchangers under intermittent operation mode: Simulation analysis and comparative study," Energy, Elsevier, vol. 282(C).
    11. Isa Kolo & Christopher S. Brown & Gioia Falcone & David Banks, 2023. "Repurposing a Geothermal Exploration Well as a Deep Borehole Heat Exchanger: Understanding Long-Term Effects of Lithological Layering, Flow Direction, and Circulation Flow Rate," Sustainability, MDPI, vol. 15(5), pages 1-24, February.
    12. Zhang, Fangfang & Fang, Liang & Jia, Linrui & Man, Yi & Cui, Ping & Zhang, Wenke & Fang, Zhaohong, 2021. "A dimension reduction algorithm for numerical simulation of multi-borehole heat exchangers," Renewable Energy, Elsevier, vol. 179(C), pages 2235-2245.
    13. Christopher S. Brown & Hannah Doran & Isa Kolo & David Banks & Gioia Falcone, 2023. "Investigating the Influence of Groundwater Flow and Charge Cycle Duration on Deep Borehole Heat Exchangers for Heat Extraction and Borehole Thermal Energy Storage," Energies, MDPI, vol. 16(6), pages 1-22, March.
    14. Cai, Wanlong & Wang, Fenghao & Chen, Chaofan & Chen, Shuang & Liu, Jun & Ren, Zhanli & Shao, Haibing, 2022. "Long-term performance evaluation for deep borehole heat exchanger array under different soil thermal properties and system layouts," Energy, Elsevier, vol. 241(C).
    15. Luo, Yongqiang & Xu, Guozhi & Zhang, Shicong & Cheng, Nan & Tian, Zhiyong & Yu, Jinghua, 2022. "Heat extraction and recover of deep borehole heat exchanger: Negotiating with intermittent operation mode under complex geological conditions," Energy, Elsevier, vol. 241(C).
    16. Zhang, Sheng & Liu, Jun & Zhang, Xia & Wang, Fenghao, 2024. "Properly shortening design time scale of medium-deep borehole heat exchanger for high building heating performances with high computational efficiency," Energy, Elsevier, vol. 290(C).
    17. Zhang, Yuanyuan & Ye, Cantao & Kong, Yanlong & Gong, Yulie & Zhang, Dongdong & Yao, Yecheng, 2023. "Thermal attenuation and heat supplementary analysis of medium-deep coaxial borehole system-based on a practical project," Energy, Elsevier, vol. 270(C).
    18. Li, Chao & Jiang, Chao & Guan, Yanling & Tan, Zijing & Zhao, Zhiqiang & Zhou, Yang, 2022. "Development and applicability of heat transfer analytical model for coaxial-type deep-buried pipes," Energy, Elsevier, vol. 255(C).
    19. Huang, Shuai & Zhu, Ke & Dong, Jiankai & Li, Ji & Kong, Weizheng & Jiang, Yiqiang & Fang, Zhaohong, 2022. "Heat transfer performance of deep borehole heat exchanger with different operation modes," Renewable Energy, Elsevier, vol. 193(C), pages 645-656.
    20. Yazhou Zhao & Xiangxi Qin & Xiangyu Shi, 2022. "Heat Transfer Modeling on High-Temperature Charging and Discharging of Deep Borehole Heat Exchanger with Transient Strong Heat Flux," Sustainability, MDPI, vol. 14(15), pages 1-34, August.
    21. Wenjing Li & Wenke Zhang & Zhenxing Li & Haiqing Yao & Ping Cui & Fangfang Zhang, 2022. "Investigation of the Heat Transfer Performance of Multi-Borehole Double-Pipe Heat Exchangers in Medium-Shallow Strata," Energies, MDPI, vol. 15(13), pages 1-19, June.

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