Results 41 to 50 of about 5,412 (233)

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

The Art of Reception: Field Visits as Microcosms for Development Interventions of Non‐Governmental Organisations in Uganda

Journal of International Development, EarlyView.
ABSTRACT Field visits are common phenomena with non‐governmental organisations in Uganda. During these visits, Ugandan national staff guide visitors on series of meetings and interactions in the field. Following an actor‐oriented approach and drawing on ethnographic data on 14 field visits, this paper understands the field visit as a microcosm for the ...
Caspar Edward Swinkels
wiley   +1 more source

Method of calculation and analysis of joint operation of circuit loop of ground heat exchangers and heat pump [PDF]

, 2013
The method of heat calculation of the joint work of borehole heat exchangers and heat pump circuits in quasi-stationary regime is developed.
Filatov, S. A., Volodin, V. I.
core  

The Glacial Legacy of the Geneva Basin: Morphology and implications of an intricate tunnel valley system revealed from 3D seismic data

Journal of Quaternary Science, EarlyView.
ABSTRACT Like other perialpine basins and glaciated margins, the Geneva Basin in SW Switzerland is characterised by buried tunnel valleys, which are elongated incisions widely attributed to subglacial meltwater erosion beneath continental ice sheets. However, an inclusive understanding of the geological control on the evolution of the glacial landscape
Ovie Emmanuel Eruteya, Emna Meftah, Andrea Moscariello   +2 more
wiley   +1 more source

Numerical Analysis of Inlet–Outlet Leg Barriers in Vertical Borehole Heat Exchangers: A Strategy to Mitigate the Thermal Resistance

Geotechnics
The efficiency of heat transfer through borehole heat exchangers is influenced by the thermal resistances of both the borehole and the surrounding soil. Optimizing these resistances can improve the heat transfer performance and reduce system costs.
Asfia Nishat, Hossam Abuel-Naga
doaj   +1 more source

Assessment of Design Procedures for Vertical Borehole Heat Exchangers [PDF]

, 2015
The use of ground source energy systems is a well-established method to provide low cost heating to buildings, diversify the energy mix and help meeting increasingly stricter sustainability targets.
Keirstead, J, Sailer, E, Taborda, DMG
core  

Efficiency of closed loop geothermal heat pumps: A sensitivity analysis [PDF]

, 2014
Geothermal heat pumps are becoming more and more popular as the price of fossil fuels is increasing and a strong reduction of anthropogenic CO2 emissions is needed.
Al-Khoury, Al-Khoury, Alessandro Casasso, Badescu, Bandos, Bauer, Blum, Blumsack, Bozdaǧ, Carslaw, Chiasson, Chung, Curtis, de Marsily, Delaleux, Di Molfetta, Diao, Diersch, Diersch, Diersch, Diersch, Erol, Eskilson, Eskilson, EUROBSERV'ER, Gehlin, Goetzler, Healy, Hecht-Mendez, Hellstrom, Ingersoll, Jun, Klotzbücher, Langevin, Lee, Lee, Marcotte, Michopoulos, Molina-Giraldo, Molina-Giraldo, Pollack, Rajandrea Sethi, Saner, Sethi, Spitler, VDI, Wagner, Wagner, Wang, Witte   +49 more
core   +1 more source

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers, Masaki Hayashi, Pablo A. Mendoza   +2 more
wiley   +1 more source

Installation Cost and Heat Extraction Performance Analysis of H-Shaped PC Pile Ground Heat Exchangers for Small Buildings

Energies
Ground source heat pump systems are one of the renewable energy heat utilization technologies that can reduce the energy for HVAC and hot water supplies and consequently mitigate the progression of global warming.
Takao Katsura, Katsuya Saito, Motoaki Oe, Katsunori Nagano   +3 more
doaj   +1 more source

Development and application of test cases for comparing vertical ground heat exchanger models [PDF]

, 2007
The main objective of this paper is to establish a set of test cases for analytical verifications and intermodel comparisons of ground heat exchanger (GHX) models used in building simulation programs. Several test cases are suggested.
Bernier, M., Bertagnolio, S., Kummert, M.   +2 more
core