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Full scale test facilities for evaluation of energy and hygrothermal performances [PDF]
, 2011 Janssens, Arnold +2 more
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How groundwater temperature is affected by climate change: A systematic review. [PDF]
HeliyonEgidio E, De Luca DA, Lasagna M.
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Description and Validation of a MATLAB:Simulink Single Family House Energy Model with Furniture and Phase Change Materials [PDF]
, 2016 Heiselberg, Per, Johra, Hicham
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Borehole resistance and vertical temperature profiles in coaxial borehole heat exchangers
Applied Energy, 2013Ground source heat pump systems are often coupled to the ground by circulating a fluid through vertical Borehole Heat Exchangers (BHEs). The design of a system requires estimates of the ground thermal conductivity and the borehole thermal resistance, which are usually determined by an in situ thermal response test on a completed borehole.
Richard A Beier
exaly +2 more sources
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, Guillermo A Narsilio
exaly +2 more sources
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 ...
Rafid Al-Khoury +2 more
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Borehole heat exchanger with nanofluids as heat carrier
Geothermics, 2018Abstract This paper presents numerical study on the use of nanofluids to replace conventional ethylene glycol/water mixture as heat carrier in a BoreHole Heat Exchanger. Nanofluids contain suspended metallic nanoparticles: increasing their concentration, in comparison to the base fluid, the thermal conductivity increases and the volumetric heat ...
Giuseppe Diglio +3 more
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Modeling insulated borehole heat exchangers
Environmental Earth Sciences, 2016In the heating sector, borehole heat exchangers have become popular for supplying renewable energy. They tap into the subsurface to extract geothermal energy for heating purposes. For advanced applications, borehole heat exchangers require insulation in the upper part of the borehole either to meet legal requirements or to improve their performance.
Daniel Otto Schulte +6 more
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Theoretical Model of Borehole Heat Exchanger
Journal of Energy Resources Technology, 2004The paper deals with the possible use of existing oil wells for geothermal energy production. A mathematical model, describing the process of exploitation of a borehole heat exchanger, has been worked out. It was used for determining energy efficiency, employing the main parameter, i.e., flow of produced heat energy.
Tomasz Śliwa, Andrzej Gonet
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Heat exchange of a borehole with frozen rock
Journal of Engineering Physics and Thermophysics, 1998We present a method for calculating the heat exchange of a borehole with the surrounding frozen rock in the presence of solid deposits on the inner walls of the raising column of the borehole.
N. G. Musakaev, V. Sh. Shagapov
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