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Borehole geophysics

, 2016
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Heat transfer simulation, analysis and performance study of single U-tube borehole heat exchanger

Renewable Energy, 2020
This paper presents the analysis, simulation and performance study of heat transfer in a single U-tube borehole heat exchanger (BHE). Unsteady heat transfer method was used to analyze the heat transfer process of both inside and outside the borehole ...
Esa Dube Kerme, Alan S Fung
exaly   +2 more sources

A proposed method for determining in-situ stress from borehole breakout based on borehole stereo-pair imaging technique

International Journal of Rock Mechanics and Minings Sciences, 2020
Based on the borehole breakout method, this paper proposes a method for measuring in-situ stress by using a borehole stereo-pair imaging technique.
Zengqiang Han, Chuanying Wang, Xianjian Zou   +2 more
exaly   +2 more sources

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

, 2021
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.
Wanlong Cai, Fenghao Wang, Shuang Chen, Chaofan Chen, J. Liu, Jiewen Deng, O. Kolditz, H. Shao   +7 more
semanticscholar   +1 more source

Heat extraction model and characteristics of coaxial deep borehole heat exchanger

, 2021
Middle and deep geothermal resources are abundant and have the advantages of being clean, stable, and reliable. However, a widely recognised theoretical model of deep ground heat exchangers is currently lacking owing to the uncertainty of the underground
Ji Li, Wei Xu, Jian-feng Li, Shuai Huang, Zhaoai Li, Biao Qiao, Chun Yang, Deyu Sun, Guangqiu Zhang   +8 more
semanticscholar   +1 more source

Numerical investigation on the capacity and efficiency of a deep enhanced U-tube borehole heat exchanger system for building heating

, 2021
Deep geothermal energy has become widely exploited in recent years through the use of closed loop systems for building heating. Intended to meet high heating demand in densely populated neighbourhoods, an enhanced U-tube borehole heat exchanger (EUBHE ...
Chaofan Chen, Wanlong Cai, D. Naumov, Kun Tu, Hongwei Zhou, Yuping Zhang, O. Kolditz, H. Shao   +7 more
semanticscholar   +1 more source

Mechanical properties and failure mode of sandstone specimen with a prefabricated borehole under true triaxial stress condition

Geomechanics for Energy and the Environment, 2021
With the continuous demand for mineral resources, the construction design and stability of underground rock engineering have been a frontier research topic worldwide.
Jun Lu, G. Yin, Dongming Zhang, Xing Li, Gun Huang, Heng Gao   +5 more
semanticscholar   +1 more source

Numerical modeling of a coaxial borehole heat exchanger to exploit geothermal energy from abandoned petroleum wells in Hinton, Alberta

, 2020
Deep petroleum wells are often associated with high bottom-hole temperatures and can provide a cost-effective way to produce geothermal energy. The goal of this study is to develop a reliable simulation model to demonstrate the feasibility of extracting ...
Xincheng Hu, Jonathan C. Banks, Lin-ping Wu, W. Liu   +3 more
semanticscholar   +1 more source

Study on the influence of borehole spacing considering groundwater flow and freezing factors on the annual performance of the ground source heat pump

, 2021
Considering freezing and groundwater flow simultaneously, a three-dimensional finite element dynamic simulation platform of the ground source heat pump system (GSHPS) is established, and the GSHPS performance in an office building is analyzed by using ...
Hongzhi Zhang, Zongwei Han, Xiuming Li, Mingzhen Ji, Xueping Zhang, Gui Li, Lingyan Yang   +6 more
semanticscholar   +1 more source