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November 15, 2025Results in EngineeringOpen Access

Utilizing underground mined-out space as geothermal reservoir for water storage: A study on temperature field evolution

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Authors

CZCunli ZhuYZYuejin ZhouJZJixiong Zhang

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Overview

This analysis demonstrates improved heat transfer in coal via water storage in underground spaces, suggesting enhanced geothermal energy applications.

Key Points

  • Heat transfer efficiency improves with increased rock fragmentation and longer heat exchange channels.
  • The study reports a temperature field evolution with less than 1 °C deviation between model and experimental curves.
  • A theoretical convection heat transfer model clarifies convective heat exchange mechanisms between water and surrounding rocks.
  • Findings emphasize the potential of deep geothermal energy utilization through innovative water storage techniques.

Cite This Study

Zhu et al. (2025) studied this question.

synapsesocial.com/papers/6925198ec0ce034ddc353504https://doi.org/10.1016/j.rineng.2025.108192
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