Results 31 to 40 of about 11,923 (246)

The element-release mechanisms of two pyrite-bearing siliciclastic rocks from the North German Basin at temperatures up to 90 °C under oxic and anoxic conditions

Geothermal Energy, 2017
Leaching tests with synthetic brines (25 g/L NaCl) between 25 °C and 90 °C were performed under oxic and anoxic conditions over 7 days on two pyrite-bearing siliciclastic rocks from the Lower Jurassic Hettangian and Sinemurian stages in the North German ...
Daniel Richard Müller, Simona Regenspurg   +1 more
doaj   +1 more source

SHEMAT-Suite: An open-source code for simulating flow, heat and species transport in porous media

SoftwareX, 2020
SHEMAT-Suite is a finite-difference open-source code for simulating coupled flow, heat and species transport in porous media. The code, written in Fortran-95, originates from geoscientific research in the fields of geothermics and hydrogeology.
Johannes Keller, Volker Rath, Johanna Bruckmann, Darius Mottaghy, Christoph Clauser, Andreas Wolf, Ralf Seidler, H. Martin Bücker, Norbert Klitzsch   +8 more
doaj   +1 more source

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

American Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt, Stefan Seifert, Saskia Wolff, Tobia Lakes, Marten Graubner, Axel Werwatz, Silke Hüttel   +6 more
wiley   +1 more source

Preliminary studies for an integrated assessment of the hydrothermal potential of the Pechelbronn Group in the northern Upper Rhine Graben [PDF]

Advances in Geosciences, 2018
The northern Upper Rhine Graben is due to its tectonic setting and the positive geothermal anomaly a key region for geothermal heat and power production in Europe. In this area the Upper Eocene to Lower Oligocene Pechelbronn Group reaches depths of up
M. Hintze, M. Hintze, B. Plasse, K. Bär, I. Sass, I. Sass   +5 more
doaj   +1 more source

Advancements in CO2 Capture Technologies: A Review of Amine Absorption and Alternative Methods for Post‐Combustion Integration

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Carbon capture technologies are poised to become one of the primary focuses regarding the achievement of net‐zero emissions by the year 2050. In these technologies, particular attention is given to post‐combustion CO2 capture, which is more easily implemented at existing power stations and other industries.
Satyajit Mukherjee, Ashish Kumar, Mayurkumar P. Patil, Rohit B. Meshram   +3 more
wiley   +1 more source

Operation strategy simulation of the heating system for moderately deep geothermal resources

Meitian dizhi yu kantan
BackgroundThe active utilization of moderately deep geothermal resources for heating serves as a critical measure to achieve the goals of peak carbon dioxide emissions and carbon neutrality. Meanwhile, the effectiveness of the operation strategies of the
Yongzhe ZHAO, Baofeng ZHAO, Zhenyang HU, Li GOU, Dingshan DU, Chenglu LIU   +5 more
doaj   +1 more source

Thermally driven fracture aperture variation in naturally fractured granites

Geothermal Energy, 2019
Temperature variations often trigger coupled thermal, hydrological, mechanical, and chemical (THMC) processes that can significantly alter the permeability/impedance of fracture-dominated deep geological reservoirs. It is thus necessary to quantitatively
Marina Grimm Lima, Daniel Vogler, Lorenzo Querci, Claudio Madonna, Bodo Hattendorf, Martin O. Saar, Xiang-Zhao Kong   +6 more
doaj   +1 more source

Radiative Hybrid Nanofluid Flow Over a Porous Riga Surface: A Fuzzy–ANN Modeling Approach

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study proposes a fuzzy–ANN model to investigate the nonlinear thermal transport in a tangent hyperbolic (Tanh) hybrid nanofluid flow past a porous Riga surface, considering the effects of Rosseland diffusion, chemical reactions, and internal volumetric heating.
Azad Hussain, Rabia Zetoon, Reeha Iqbal
wiley   +1 more source

Calculation of state equation isobars of carbon dioxide and methane in pressure interval from 2 to 20 MPa

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
The paper presents the calculation results for the state equation isobars of carbon dioxide and methane in the pressure range from 2 to 20 MPa. The calculations have been performed by using the fractal equation of state and the Fract EOS software. It was
R.A. Magomedov, E.V. Akhmedov
doaj   +1 more source

Numerical Study of MHD Hybrid Nanofluid Flow With Multiple Slip Effects Over a Variable Porous Stretching Surface

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This work discusses the thermal performance of magnetized hybrid nanofluid flow over a variable porous stretchable surface, emphasizing the underlying physical mechanisms governing heat and mass transfer. The Cattaneo–Christov flux model is used in place of Fourier's and Fick's laws to incorporate relaxation effects, ensuring a more realistic ...
Mounirah Areshi, Abdul Bariq, Salemah A. Almutlak, Fahad Maqbul Alamrani, Zehba Raizah, Anwar Saeed   +5 more
wiley   +1 more source