Results 21 to 30 of about 467 (182)
Energies, 2019 When considering implementation of shallow geothermal energy as a renewable source for heating and cooling of buildings, special care should be taken in the hydraulic design of the borehole heat exchanger system.
Tomislav Kurevija +3 more
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International Journal of Sustainable Energy, 2022 The dynamic performance of a hybrid power plant configuration comprising of a ground heat exchanger and an organic Rankine cycle (ORC) for power generation at the load end is studied.
Anukool Choudhary +2 more
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Optimization design and drag reduction characteristics of bionic borehole heat exchanger
Frontiers in Energy Research, 2022 As a renewable energy source, geothermal energy has drawn attention because it is clean, low-carbon, resource-rich, stable, and sustainable supply. In the mining and operation of a geothermal energy system, there is a certain amount of fluid resistance ...
Jiansong Zhang +6 more
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Pipe materials for borehole heat exchangers
European Geothermal Congress 2016, 2016 This paper investigates and evaluates alternative options of higher thermal conductivity as borehole heat exchanger (BHE) piping materials, such as mild steel, galvanized steel, various coating options, stainless steel, copper and its alloys, aluminum, titanium, as well as reinforced polymers and other plastic materials including thermally enhanced ...
Mendrinos, Dimitrios +2 more
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STUDY OF BOREHOLE HEAT EXCHANGER HEAT TRANSFER ENHANCEMENT PARAMETERS
Вестник КазНУ. Серия математика, механика, информатика, 2022 This paper discusses the study of parameters for improving the heat transfer of a borehole heat exchanger for a ground source heat pump application. The study of efficiency parameters was carried out based on an experimental prototype of a ground source ...
T. Amanzholov +3 more
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Case Studies in Thermal Engineering, 2022 In this paper, based on the heat transfer characteristics of deep borehole heat exchanger (DBHE), the superposition dimension reduction algorithm was used to solve the heat transfer model of multiple DBHE (MDBHE). Compared with the monitoring field data,
Fangfang Zhang +7 more
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Case Studies in Thermal Engineering, 2021 The clogging problem during injection seriously limits the development and utilization of geothermal resources in unconsolidated sandstone area.
Yanxin Wang, Xianbiao Bu
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Thermal stresses in borehole heat exchangers
International Journal for Numerical and Analytical Methods in Geomechanics, 2015 SummaryThe backfilling materials of borehole heat exchangers (BHE), particularly the grout material, must provide a suitable thermal contact and ensure durability to the induced thermal stresses because of the heat loading. In this paper, the thermal stresses that occurred in BHEs because of heat injection or extraction is investigated with an ...
Erol, Selcuk, François, Bertrand
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Deep Underground Science and Engineering, EarlyView.The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu +5 more
wiley +1 more source
Measurements and Design Calculations for a Deep Coaxial Borehole Heat Exchanger in Aachen, Germany
International Journal of Geophysics, 2013 This study aims at evaluating the feasibility of an installation for space heating and cooling the building of the university in the center of the city Aachen, Germany, with a 2500 m deep coaxial borehole heat exchanger (BHE). Direct heating the building
Lydia Dijkshoorn +2 more
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