TY - GEN
T1 - Obtaining Thermal Conductivity of Medium-Deep Geothermal Boreholes
T2 - 12th International Conference on Cold Climate HVAC and Energy, CCHVAC 2025
AU - Yu, Yuelong
AU - Dong, Shihao
AU - Ni, Long
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - Medium-deep ground source heat pumps are an important low-carbon heating technology. This study proposes a hybrid thermal conductivity model based on kilometer-scale formation variations. Well logging at a factory site in Shenyang, China, revealed that the upper 0–750 m is Cenozoic strata with higher porosity and argillaceous content, while the underlying Archean formation consists of dense, highly conductive rocks. Permeability is low in deep formations, indicating few aquifers. Borehole No.02, with the lowest porosity and argillaceous content, shows the highest thermal conductivity (2.64 W/(m·K)). Overall, the results highlight the strong influence of geological properties on the thermal performance of medium-deep borehole heat exchangers.
AB - Medium-deep ground source heat pumps are an important low-carbon heating technology. This study proposes a hybrid thermal conductivity model based on kilometer-scale formation variations. Well logging at a factory site in Shenyang, China, revealed that the upper 0–750 m is Cenozoic strata with higher porosity and argillaceous content, while the underlying Archean formation consists of dense, highly conductive rocks. Permeability is low in deep formations, indicating few aquifers. Borehole No.02, with the lowest porosity and argillaceous content, shows the highest thermal conductivity (2.64 W/(m·K)). Overall, the results highlight the strong influence of geological properties on the thermal performance of medium-deep borehole heat exchangers.
KW - Geological test
KW - Medium-deep geothermal
KW - Thermal conductivity
UR - https://www.scopus.com/pages/publications/105022706474
U2 - 10.1007/978-981-95-3249-0_9
DO - 10.1007/978-981-95-3249-0_9
M3 - 会议稿件
AN - SCOPUS:105022706474
SN - 9789819532483
T3 - Environmental Science and Engineering
SP - 97
EP - 105
BT - Proceedings of the 12th International Conference on Cold Climate HVAC and Energy (Volume 1) - CCHVAC 2025
A2 - Ni, Long
A2 - Wang, Peng
A2 - Li, Jiqin
A2 - Liu, Yongxin
PB - Springer Science and Business Media Deutschland GmbH
Y2 - 6 August 2025 through 8 August 2025
ER -