Results 61 to 70 of about 369 (185)

Multiphysics Monitoring of Capillary, Electrical, and Elastic Responses During Drainage and Imbibition at Reservoir Conditions

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Capillary pressure‐saturation relationships are crucial for geo‐energy recovery, and increasingly, for environmental applications. However, for reservoir‐relevant pressure and temperature conditions, only limited data sets are available from special core analysis in laboratory (SCAL) studies.
Juliane Kummerow, Erik Spangenberg, Ronny Giese   +2 more
wiley   +1 more source

Global sensitivity analysis and uncertainty quantification for design parameters of shallow geothermal systems

Geothermal Energy
To improve the design process of geothermal systems, it is important to know which design parameters particularly affect the performance of the system. This article presents investigations on design parameters for borehole heat exchangers in the shallow ...
Simon Richter, Katrin Lubashevsky, Jakob Randow, Steve Henker, Jörg Buchwald, Anke Bucher   +5 more
doaj   +1 more source

The wells of the Lipinki oil field in the aspect of borehole heat exchangers retrained [PDF]

Acta Montanistica Slovaca, 2006
Geological conditions of the Gorlice-Lipinki structure are presented in the paper. The construction of a well in the Lipinki oil field was characterized on this basis.
Andrzej Gonet, Tomasz Śliwa, Andrzej Grasela   +2 more
doaj  

Model for dimensioning borehole heat exchanger applied to mixed-integer-linear-problem (MILP) energy system optimization

Geothermal Energy
This paper introduces three novel approaches to size geothermal energy piles in a MILP, offering fresh perspectives and potential solutions. The research overlooks MILP models that incorporate the sizing of a geothermal borefield.
Tobias Blanke, Holger Born, Bernd Döring, Joachim Göttsche, Ulf Herrmann, Jérôme Frisch, Christoph van Treeck   +6 more
doaj   +1 more source

Numerical Simulation of Nanofluid Suspensions in a Geothermal Heat Exchanger

Energies, 2018
It has been shown that using nanofluids as heat carrier fluids enhances the conductive and convective heat transfer of geothermal heat exchangers. In this paper, we study the stability of nanofluids in a geothermal exchanger by numerically simulating ...
Xiao-Hui Sun, Hongbin Yan, Mehrdad Massoudi, Zhi-Hua Chen, Wei-Tao Wu   +4 more
doaj   +1 more source

Impact of operational temperature changes and freeze-thaw cycles on the hydraulic conductivity of borehole heat exchangers. [PDF]

Geotherm Energy (Heidelb), 2021
Kupfernagel JH, Hesse JC, Schedel M, Welsch B, Anbergen H, Müller L, Sass I.   +6 more
europepmc   +1 more source

Analysis of rock mass borehole temperatures with vertical heat exchanger

Research in Agricultural Engineering, 2012
The goal of the article is to analyze the distribution and changes of temperatures in boreholes with the rock mass/fluid tubular heat exchangers used as an energy source for the heat pump.
R. Adamovský, L. Mašek, P. Neuberger
doaj   +1 more source

Optimal sizing of borehole heat exchangers

Strojarstvo : časopis za teoriju i praksu u strojarstvu, 2009
The heat pumps coupled to the borehole heat exchangers (BHE) can serve for heating and/or cooling of buildings. Optimal sizing of BHE is important because of high drilling costs and importance of matching borehole thermal capacity with the capacity of the heat pump.
Ruševljan, Miroslav, Ćurko, Tonko
openaire   +1 more source

Thermal Performance of Borehole Heat Exchangers with Varying Borehole Depths in Cold Regions: Implications from In Situ Thermal Response Tests

Energies
In cold regions, performance reduction in a Ground-Coupled Heat Pump (GSHP) system has been frequently reported. Many operational strategies have been adopted to mitigate such an undesirable phenomenon.
Zezhou Yan, Qi Zhang, Ming Yang, Peiyu Zeng, Jin Luo, Deshan Cui   +5 more
doaj   +1 more source

Low-potencial Earth thermalEnergy Utilization in Heat Pump Systems [PDF]

Acta Montanistica Slovaca, 2006
The underground in the first approx. 100 m is well suited for supply and storage of thermal energy. The climatic temperature change over the seasons is reduced to a steady temperature at 10-20 m. With further depth, the temperatures increase according to
Marina Sidorová, Gabriel Wittenberger
doaj