Results 1 to 10 of about 97,437 (278)

Performance analysis of single-rotor multi-zone desiccant wheel cooling and dehumidification system for excavation face of deep mine

open access: yesMeitan kexue jishu
As the mining depth of coal mines increases, the surrounding rock temperature at the excavation face rises continuously, significantly increasing the cooling demand in deep mines and hindering the sustainable development of deep resources. To address the
Yongzhe ZHAO   +3 more
doaj   +1 more source

Solute tracer test quantification of the effects of hot water injection into hydraulically stimulated crystalline rock

open access: yesGeothermal Energy, 2020
When water is injected into a fracture-dominated reservoir that is cooler or hotter than the injected water, the reservoir permeability is expected to be altered by the injection-induced thermo-mechanical effects, resulting in the redistribution of fluid
Anniina Kittilä   +3 more
doaj   +1 more source

Monochromatic infrasound waves observed during the 2014–2015 eruption of Aso volcano, Japan

open access: yesEarth, Planets and Space, 2019
Monochromatic infrasound waves are scarcely reported volcanic infrasound signals. These waves have the potential to provide constraints on the conduit geometry of a volcano.
Akihiko Yokoo   +3 more
doaj   +1 more source

Women and Coffee Farming: Collective Consciousness towards Social Entrepreneurship in Ulubelu, Lampung

open access: yesJSP: Jurnal Ilmu Sosial dan Ilmu Politik, 2019
Women and coffee farming raise close attention in agriculture and development debates. History shows that women profoundly contribute to producing good quality coffee.
Dian Karinawati Imron   +1 more
doaj   +1 more source

Vibration monitoring at drill-bit and its correlation with downhole mechanical specific energy (MSE)

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
Drill-bit vibrations are a part of rock fracturing and breaking in the drilling process, are potentially harmful to equipment, yet provide valuable insights about drilling dynamics and formation properties.
Manzoor Ahmad   +5 more
doaj   +1 more source

Techno-Economic Feasibility of Green Hydrogen Production Utilizing Geothermal Energy in Indonesia

open access: yesProceedings
This study provides a comprehensive techno-economic assessment of green hydrogen production utilizing geothermal energy, conducted by PT Pertamina Geothermal Energy Tbk, Indonesia [...]
Jati Permana Kurniawan   +3 more
doaj   +1 more source

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

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

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

open access: yesФизико-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

Repurposing idle wells in the North German Basin as deep borehole heat exchangers

open access: yesGeothermal Energy
This study investigates the feasibility to repurpose wells from gas production for geothermal closed-loop application in the North German Basin (NGB). The objective for this research topic is to extend the value-added chain of idle wells by re-completion
Nora Koltzer   +4 more
doaj   +1 more source

A physics-guided clustered GBRT ensemble model for geothermal heat flow prediction and its application in China

open access: yesGeothermal Energy
Geothermal heat flow (GHF) is essential for quantifying lithospheric thermal conditions and supporting geothermal resource assessment. However, direct GHF measurements remain sparse and unevenly distributed due to drilling limitations and high ...
Jifu He   +3 more
doaj   +1 more source

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