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Thermal interaction between tunnel ground heat exchangers and borehole heat exchangers
Geomechanics for Energy and the Environment, 2017Renewable geothermal energy is an energy source that can be used for heating and cooling purposes. One common method of harvesting this energy is using engineering structures in contact with the ground, such as structural piles, diaphragm walls or tunnels (with geothermal loops integrated into the tunnel lining/invert (tunnel ground heat exchangers ...
Asal Bidarmaghz +4 more
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Heat transfer analysis of short helical borehole heat exchangers
Applied Energy, 2013Abstract In this paper a numerical model to analyze the thermal behaviour of vertical ground heat exchangers with a helical shaped pipe is presented. This type of configuration can be a suitable alternative to conventional ground heat exchangers, especially when the heating and cooling loads of the building are very low. The model describes the heat
ZARRELLA, ANGELO, DE CARLI, MICHELE
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Transient heat transfer in a coaxial borehole heat exchanger
Geothermics, 2014Ground-source heat pumps often use vertical boreholes to exchange heat with the ground. A transient heat transfer model has been developed for a thermal response test on a pipe-in-pipe coaxial borehole heat exchanger. The analytical model calculates the vertical temperature profiles in the fluid flowing through the pipes, which are coupled to the ...
Richard A. Beier +3 more
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Journal of Energy Storage, 2021
Borehole heat exchanger (BHE) is a very suitable and cost-effective technology for heat storage and extraction of heat from the ground. In this paper, comprehensive analysis of major influencing parameters on thermal performance of single U-tube BHE ...
E. Kerme, A. Fung
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Borehole heat exchanger (BHE) is a very suitable and cost-effective technology for heat storage and extraction of heat from the ground. In this paper, comprehensive analysis of major influencing parameters on thermal performance of single U-tube BHE ...
E. Kerme, A. Fung
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Renewable Energy, 2021
Borehole heat exchangers (BHEs) are widely used with ground source heat pump (GSHP) system for utilization of shallow geothermal energy. In this paper, heat transfer between a single BHE and the surrounding soil is investigated, in which convection at ...
Yang Zhou, Zijun Wu, Kang Wang
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Borehole heat exchangers (BHEs) are widely used with ground source heat pump (GSHP) system for utilization of shallow geothermal energy. In this paper, heat transfer between a single BHE and the surrounding soil is investigated, in which convection at ...
Yang Zhou, Zijun Wu, Kang Wang
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, 2021
The horizontally-butted borehole heat exchanger (BHE) can be used to extract heat efficiently from medium-deep strata, where the groundwater seepage and undisturbed geothermal gradient are critical influence factors.
Jiang Guosheng +5 more
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The horizontally-butted borehole heat exchanger (BHE) can be used to extract heat efficiently from medium-deep strata, where the groundwater seepage and undisturbed geothermal gradient are critical influence factors.
Jiang Guosheng +5 more
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, 2021
In the ground coupled heat pump system that delivers space heating and cooling to the buildings, often questions are raised as to which borehole heat exchanger configuration (single or double U-tube) provides higher thermal performance.
E. Kerme, A. Fung
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In the ground coupled heat pump system that delivers space heating and cooling to the buildings, often questions are raised as to which borehole heat exchanger configuration (single or double U-tube) provides higher thermal performance.
E. Kerme, A. Fung
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, 2020
Application of the medium-deep borehole heat exchanger (MDBHE) coupled ground source heat pump (GSHP) system on building heating has been gradually accepted by public and its sustainability becomes a key concern.
Jun Liu +6 more
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Application of the medium-deep borehole heat exchanger (MDBHE) coupled ground source heat pump (GSHP) system on building heating has been gradually accepted by public and its sustainability becomes a key concern.
Jun Liu +6 more
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Efficient numerical modeling of borehole heat exchangers
Computers & Geosciences, 2010This paper presents a finite element modeling technique for double U-tube borehole heat exchangers (BHE) and the surrounding soil mass. Focus is placed on presenting numerical analyses describing the capability of a BHE model, previously reported, to simulate three-dimensional heat transfer processes in multiple borehole heat exchangers embedded in a ...
R. Al-Khoury, T. Kölbel, R. Schramedei
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Experiences with the Borehole Heat Exchanger
2018Renewable energy sources have one thing in common; they all existed before man appeared on this planet. Wind, wave, hydro, solar, geothermal and tidal powers are all forces of nature and are mostly intermittent energy sources, geothermal is the only consistent phenomenon.
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