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Numerical investigation on the ground heat exchanger installed in shallow depth soils

Abstract : Shallow geothermal energy is an energy that can help humanity to reach the goal of sustainable development. Ground-Coupled Heat Pump system is traditionally used to benefit this energy. As a main element of the system, ground heat exchanger performance directly influences its energy efficiency. The shallow ground heat exchangers are normally installed in soils, which show high heterogeneity of hydrothermal properties along the soil profiles. The main objective of this project is identifying how ground heat exchanger behaves in the soil. In summary, the following investigations were conducted: the first is introducing hydrothermal transfer in the numerical modeling of Borehole Heat Exchanger installed at a site in Alsace region (France); the second is identifying the factors influencing the performance of a shallow Borehole Heat Exchanger installed in soils; the third is conducting sensitive analysis of Thermal Response Tests for Borehole Heat Exchanger installed in soils; the fourth is identifying the performance difference of a numerical simulation model with Neumann and Dirichlet boundaries on the ground surface for a Horizontal Ground Heat Exchanger.
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Submitted on : Wednesday, April 1, 2020 - 7:25:11 PM
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TANG_Fujiao_2019_ED269.pdf
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  • HAL Id : tel-02528548, version 1

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Fu-Jiao Tang. Numerical investigation on the ground heat exchanger installed in shallow depth soils. Electric power. Université de Strasbourg, 2019. English. ⟨NNT : 2019STRAD049⟩. ⟨tel-02528548⟩

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