Results 131 to 140 of about 369 (185)

Subterranean environments contribute to three-quarters of classified ecosystem services. [PDF]

Biol Rev Camb Philos Soc
Mammola S, Brankovits D, Lorenzo TD, Amorim IR, Bancila RI, Bellvert A, Bernard E, Blomberg A, Borges PAV, Cappelletti M, Ferreira RL, Gabriel R, Galassi DMP, Garzoli L, Gerovasileiou V, Hose GC, Korbel KL, Martino S, Miller AZ, Mori N, Nanni V, Nicolosi G, Saccò M, Sakihara TS, Silva MS, Tamalavage AE, Zagmajster M, Chávez E, Griebler C, Cardoso P, Martínez A.   +30 more
europepmc   +1 more source

Performance investigation of a solar-driven cascaded phase change heat storage cross-seasonal heating system for plateau applications. [PDF]

Sci Rep
Gao T, Han X, Shi L, Geng Y, Zhang H, Song T.   +5 more
europepmc   +1 more source

A New Groundwater Energy Transport Model for the MODFLOW Hydrologic Simulator. [PDF]

Ground Water
Morway ED, Provost AM, Langevin CD, Hughes JD, Russcher MJ, Chen CY, Lin YF.   +6 more
europepmc   +1 more source

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Thermal interaction between tunnel ground heat exchangers and borehole heat exchangers

Geomechanics for Energy and the Environment, 2017
Renewable 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 Narsilio, Christian Moormann   +2 more
exaly   +2 more sources

Efficient numerical modeling of borehole heat exchangers

Computers & Geosciences, 2010
This 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, T. Kölbel, R. Schramedei   +2 more
openaire   +1 more source

Borehole heat exchanger with nanofluids as heat carrier

Geothermics, 2018
Abstract 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, Carlo Roselli, Maurizio Sasso, Umavathi Jawali Channabasappa   +3 more
openaire   +1 more source

Modeling insulated borehole heat exchangers

Environmental Earth Sciences, 2016
In 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, Bastian Welsch, Anke Boockmeyer, Wolfram Rühaak, Kristian Bär, Sebastian Bauer, Ingo Sass   +6 more
openaire   +1 more source

Theoretical Model of Borehole Heat Exchanger

Journal of Energy Resources Technology, 2004
The 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
openaire   +1 more source

Heat exchange of a borehole with frozen rock

Journal of Engineering Physics and Thermophysics, 1998
We 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
openaire   +1 more source