Results 81 to 90 of about 5,412 (233)

Relation Between Mean Fluid Temperature and Outlet Temperature for Single U-Tube Boreholes

Energies, 2020
Ground-coupled heat pump (GCHP) systems usually utilize buried vertical heat exchangers, named borehole heat exchangers (BHEs). The accurate design or simulation of a GCHP system requires the calculation of the time-dependent outlet temperature from the ...
Aminhossein Jahanbin, Claudia Naldi, Enzo Zanchini   +2 more
doaj   +1 more source

Radon‐222 as an Effective Tracer to Distinguish Groundwater Circulation Patterns in the Deep Fault‐Controlled Geothermal System

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Groundwater flow regulated by deep faults remains challenging to trace due to structural complexity. This study applies the noble gas tracer 222Rn combined with hydrochemistry and stable isotopes (δ2H, δ18O) to distinguish circulation patterns of geothermal springs along a major fault in the Tibetan Plateau.
Xiaoyan Shi, Xingxing Kuang, Meizhuang Zhu, Linfeng Fan, Xinkang Wang, Gexi Zheng, Yinlei Hao, Chunmiao Zheng   +7 more
wiley   +1 more source

The Compatibility of Geothermal Power Plants with Groundwater Dependent Ecosystems: The Case of the Cesine Wetland (Southern Italy) [PDF]

, 2018
The Cesine Wetland, located along the Adriatic coast, was recognized as a Wetland of International Interest and a National Natural Park. Managed by the "World Wide Fund for nature" (WWF), it is considered a groundwater dependent ecosystem which is ...
Chieco, Michele, De Giorgio, Giorgio, Di Rienzo, Brunella, Limoni, Pier, Pedron, Roberto, Polemio, Maurizio, Sottani, Andrea, Stellato, Luisa, Vettorello, Luca, Zuffianò, Livia   +9 more
core   +2 more sources

Impacts of borehole heat exchangers (BHEs) on groundwater quality: the role of heat-carrier fluid and borehole grouting

Environmental Earth Sciences, 2018
This study investigated the role of two technical features of borehole heat exchangers (BHEs) in causing impacts on groundwater quality: the use of propylene glycol (PG) and other additives in heat-carrier fluids and the BHE grouting. The PG is the most diffused antifreeze compound used in heat-carrier fluids circulating into the ground loops ...
Arianna Bucci, Alessandra Bianco Prevot, Sandro Buoso, Domenico Antonio De Luca, Manuela Lasagna, Mery Malandrino, Valter Maurino   +6 more
openaire   +2 more sources

Fault‐Mediated Groundwater‐Surface Water Mixing Amplifies Hydrochemical/Hydrological Dynamics in a Semi‐Arid Volcanic Lake Basin

Hydrological Processes, Volume 40, Issue 5, May 2026.
Isotopes data help to understand the GW‐SW connectivity, the recharge elevations, and evaporation in a volcanic lake basin. ABSTRACT Understanding groundwater (GW) to surface water (SW) connectivity (i.e., the exchange of water and solutes between aquifers and surface bodies) is increasingly important under changing climate conditions, where ...
L. Ramírez‐González, S. Olea‐Olea, R. E. Villanueva‐Estrada, M. A. Mejía‐González, L. González‐Hita, E. Morales‐Casique, O. Zamora‐Martínez, M. G. Gómez‐Vasconcelos, Denis‐Ramón Avellan, N. Ramírez‐Serrato   +9 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

Stemflows and Preferential Flows: A Historical Review and Challenges for the Future

Hydrological Processes, Volume 40, Issue 5, May 2026.
Possible implementation of stemflow in the MIPS model where all water in the system is represented as particles in pathways of specified velocity. Stemflow (green particles) can be treated as a localised input with probabilities of entering higher velocity pathways than throughfall, depending on the input rates.
Keith Beven, John T. Van Stan
wiley   +1 more source

Revealing Permafrost Continuity Across a Northern Watershed With Airborne Electromagnetics

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 5, May 2026.
Abstract Permafrost thawing in northern regions may alter groundwater‐surface water dynamics, thereby impacting hydrologic and ecologic functions and the potential release of stored solutes including carbon. Here, we present an airborne frequency‐domain electromagnetic survey over a discontinuous permafrost region within the Central Mackenzie Valley in
O. Conway‐White, C. M. Steelman, A. Smiarowski, D. L. Rudolph   +3 more
wiley   +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  

Numerical analysis of thermal cycling during a multi-stage energy pile thermal response test [PDF]

, 2016
Energy piles are emerging as convenient alternative to the more traditional borehole heat exchangers (BHEs) to provide heating/cooling to buildings, as they remove the need for special purpose excavations and can accommodate more pipes, thus enhancing ...
Cecinato, F, Loveridge, F, Nicholson, D, Piglialepre, R   +3 more
core   +1 more source