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Obtaining Thermal Conductivity of Medium-Deep Geothermal Boreholes: A Hybrid Modelling Based on Geological Test

  • 2025
  • OriginalPaper
  • Chapter
Published in:
Authors
Yuelong Yu
Shihao Dong
Long Ni
Published in
Proceedings of the 12th International Conference on Cold Climate HVAC & Energy (Volume 1)
Publisher
Springer Nature Singapore

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Abstract

This chapter delves into the critical role of thermal conductivity in medium-deep geothermal boreholes, essential for efficient ground source heat pump systems. The study introduces a hybrid modeling approach that combines geological testing and thermal transmission analysis to overcome the limitations of existing methods. Key topics include the development of a thermal conductivity model for sandstone and non-sandstone strata, the verification of the model through borehole testing in Shenyang, and the analysis of geological characteristics such as lithology, porosity, and argillaceous content. The results highlight the model's high accuracy, with minor deviations of only 1.3% and 3.1% in comparative analyses. The study concludes that the hybrid model effectively addresses the challenges of complex geological variations, providing valuable insights for the design and optimization of geothermal systems. Additionally, the chapter discusses the implications of the findings for underground engineering, radioactive waste disposal, and soil freeze-thaw studies, making it a comprehensive resource for professionals in the field.
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previous chapter Comparative Analysis of Heat Transfer Performance of Energy Segment Connections
next chapter Numerical Comparative Study and Evaluation of Flow Rate for Medium-Depth Coaxial and U-Type Borehole
Title
Obtaining Thermal Conductivity of Medium-Deep Geothermal Boreholes: A Hybrid Modelling Based on Geological Test
Authors
Yuelong Yu
Shihao Dong
Long Ni
Copyright Year
2025
Publisher
Springer Nature Singapore
Book
Proceedings of the 12th International Conference on Cold Climate HVAC & Energy (Volume 1)

Print ISBN: 978-981-9532-48-3

Electronic ISBN: 978-981-9532-49-0

Copyright Year: 2025

DOI
https://doi.org/10.1007/978-981-95-3249-0_9
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