Three-Dimensional Numerical Simulation of Geothermal Field of Buried Pipe Group Coupled with Heat and Permeable Groundwater

Xinbo Lei, Xiuhua Zheng, Chenyang Duan, Jianhong Ye and Kang Liu
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Xinbo Lei: School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
Xiuhua Zheng: School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
Chenyang Duan: School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
Jianhong Ye: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
Kang Liu: School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China

Energies, 2019, vol. 12, issue 19, 1-16

Abstract: The flow of groundwater and the interaction of buried pipe groups will affect the heat transfer efficiency and the distribution of the ground temperature field, thus affecting the design and operation of ground source heat pumps. Three-dimensional numerical simulation is an effective method to study the buried pipe heat exchanger and ground temperature distribution. According to the heat transfer control equation of non-isothermal pipe flow and porous media, combined with the influence of permeable groundwater and tube group, a heat-transfer coupled heat transfer model of the buried pipe group was established, and the accuracy of the model was verified by the sandbox test and on-site thermal response test. By processing the layout of the buried pipe in the borehole to reduce the number of meshes and improve the meshing quality, a three-dimensional numerical model of the buried pipe cluster at the site scale was established. Additionally, the ground temperature field under the thermal-osmotic coupling of the buried pipe group during groundwater flow was simulated and the influence of the head difference and hydraulic conductivity on the temperature field around the buried pipe group was calculated and analyzed. The results showed that the research on the influence of the tube group and permeable groundwater on the heat transfer and ground temperature field of a buried pipe simulated by COMSOL software is an advanced method.

Keywords: GSHP (ground source heat pump); heat transfer; coupled heat conduction and advection; nest of tubes; three-dimensional numerical simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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