Results 61 to 70 of about 354 (185)

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

open access: yesGeothermal 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   +5 more
doaj   +1 more source

Dynamic Earthquake Source Inversion With Generative Adversarial Network Priors

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Dynamic earthquake source inversion consists of inferring frictional parameters and initial stress on a fault consistent with recorded seismological and geodetic data and with dynamic earthquake rupture models. In a Bayesian inversion approach, the nonlinear relationship between model parameters and data requires a computationally demanding ...
Jan Premus, Jean Paul Ampuero
wiley   +1 more source

How to Be Hopeful About Climate Change

open access: yesAmerican Anthropologist, Volume 128, Issue 1, Page 148-158, March 2026.
ABSTRACT Why do people in climate‐vulnerable regions of Kenya and Namibia express more hope for the future than many in Germany, despite facing greater environmental threats? Drawing on ethnographic research and the philosophy of Gabriel Marcel, we make two arguments.
Julian Sommerschuh, Michael Schnegg
wiley   +1 more source

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

open access: yesActa 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   +2 more
doaj  

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

open access: yesGeothermal 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   +6 more
doaj   +1 more source

Numerical Simulation of Nanofluid Suspensions in a Geothermal Heat Exchanger

open access: yesEnergies, 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   +4 more
doaj   +1 more source

Estimation of borehole heat exchanger thermal properties [PDF]

open access: yesE3S Web of Conferences, 2018
An important issue in the design of installations with borehole heat exchangers (BHE) is knowledge of the thermo-physical properties of the grouting material and soil. The objectives of this work is to estimate the thermal conductivity and specific heat of the grouting material and the soil.
openaire   +2 more sources

Near Field Investigation of Borehole Heat Exchangers

open access: yes, 2015
As an alternative and renewable energy source, the shallow geothermal energy evolving as one of the most popular energy source due to its easy accessibility and availability worldwide, and the ground source heat pump (GSHP) systems are the most frequent applications for extracting the energy from the shallow subsurface.
Erol, Selçuk, Francois, Bertrand
openaire   +3 more sources

Analysis of rock mass borehole temperatures with vertical heat exchanger

open access: yesResearch 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

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

open access: yesGeotherm Energy (Heidelb), 2021
Kupfernagel JH   +6 more
europepmc   +1 more source

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