Results 71 to 80 of about 354 (185)
EnergiesIn 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 +5 more
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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
Thermal Performance Analyses of Multiborehole Ground Heat Exchangers
Geofluids, 2017 Geothermal energy known as a clean, renewable energy resource is widely available and reliable. Ground heat exchangers (GHEs) can assist the development of geothermal energy by reducing the capital cost and greenhouse gas emission. In this paper, a novel
Wanjing Luo +3 more
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Thermal Response Test for Optimizing Geothermal Applications in Romania
Modelling in Civil Environmental EngineeringThe Thermal Response Test – abbreviated as TRT – is a standardized procedure for geothermal heat pump systems with closed-loop heat exchangers. The test enables the determination of key physical properties of the ground – thermal conductivity and ...
Kivanc Bahadir, Virgil Florescu
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EnergiesThis paper describes the characteristics of a thermal response test and presents the results of the test conducted on a borehole at the freezing shaft in Poland.
Tomasz Sliwa +4 more
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Ground moisture phase transitions: Аccounting in BHE’S design
Инженерно-строительный журнал, 2017 The results of numerical and experimental studies devoted to the evaluation of the effect of phase transitions of pore moisture in the soil mass surrounding the borehole heat exchangers (BHE) on the thermal conductivity of the adjacent soil and on the ...
Gregory Vasilyev +5 more
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A Review on Heat Transfer Enhancement of Borehole Heat Exchanger
Energy Procedia, 2016 Abstract The heat transfer enhancements of borehole heat exchanger (BHE) have been intensively studied which strongly influences the performance of ground-coupled heat pump (GCHP) systems. In this paper, some typical heat transfer enhancement methods of BHE are reviewed based on BHE designs, grout materials and the influence of artificial groundwater
Zhao, Jun, Li, Yang, Wang, Junyao
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IMPACT OF GEOTHERMAL GRADIENT ON GROUND SOURCE HEAT PUMP SYSTEM MODELING
Rudarsko-geološko-naftni Zbornik, 2014 ndisturbed ground temperature is one of the most crucial thermogeological parameters needed for shallow geothermal resources assessment. Energy considered to be geothermal is energy stored in the ground at depths where solar radiation has no effect.
Tomislav Kurevija +2 more
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Case Studies in Thermal EngineeringThis study develops the first unified analytical framework for transient, non-Fourier heat conduction in functionally graded (FG) cylindrical media within the dual-phase-lag (DPL) paradigm.
Palash Das +4 more
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Study on the Effective Well Depth of Single U-Shaped Vertical Buried Pipes Based on Temperature Difference Analysis. [PDF]
ACS Omega, 2023 Zhang R, Xin Y.
europepmc +1 more source