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Thermal performance of an aquifer thermal energy storage system: Insights from novel multilateral wells

Author

Listed:
  • Li, Shuang
  • Wang, Gaosheng
  • Zhou, Mengmeng
  • Song, Xianzhi
  • Shi, Yu
  • Yi, Junlin
  • Zhao, Jialin
  • Zhou, Yifan

Abstract

Aquifer thermal energy storage (ATES) is an effective time-shifting thermal energy storage technology. Considering the enormous technical and economic input of the well pattern layout, the storage volume of a single well needs to be improved. This study proposes a novel aquifer thermal energy storage system in which several multilateral wells are side-tracked from the vertical well in the aquifer. Radial branches can enhance the connectivity of the wellbore to the aquifer. The research creates an unsteady-state 3D model to analyze the novel ATES system's fluid flow and heat transfer performance. The model is verified using experimental data. The temperature and pressure fields of the multilateral-well ATES are analyzed. Additionally, the effects of injection rate, radial branch length, number of radial branches, aquifer temperature, and aquifer thickness on system performance are studied. According to the research results, compared with the vertical wells, the performance coefficients of the multilateral hot well and cold well increase by 113.06 and 39.25, respectively, and the economic efficiency increases by 14.19% and 23.87%, respectively. The findings can provide a crucial reference for scientific research and the application of aquifer thermal energy storage systems with multilateral wells.

Suggested Citation

  • Li, Shuang & Wang, Gaosheng & Zhou, Mengmeng & Song, Xianzhi & Shi, Yu & Yi, Junlin & Zhao, Jialin & Zhou, Yifan, 2024. "Thermal performance of an aquifer thermal energy storage system: Insights from novel multilateral wells," Energy, Elsevier, vol. 294(C).
    • Handle: RePEc:eee:energy:v:294:y:2024:i:c:s036054422400687x
    DOI: 10.1016/j.energy.2024.130915
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