Results 61 to 70 of about 714 (185)

Exploring Solar Thermal Collector Technologies: Efficiency, Performance, and Advanced Concentration Strategies

open access: yesEnergy Science &Engineering, Volume 13, Issue 12, Page 6527-6571, December 2025.
ABSTRACT Solar thermal collector technology is crucial for capturing renewable energy to support sustainable thermal uses. Nonetheless, traditional designs frequently experience optical losses, ineffective thermal storage and variable performance under different levels of sunlight.
R. Iyankumar   +7 more
wiley   +1 more source

Applicability of Acoustic Emission Monitoring to Estimate Gasification Area in Underground Coal Gasification

open access: yesJournal of MMIJ
Underground Coal Gasification (UCG) is a promising process for recovering energy from potential underground coal resources as combustible gases such as hydrogen and carbon monoxide.
Akihiro HAMANAKA   +7 more
doaj   +1 more source

Rock massif observation from underground coal gasification point of view [PDF]

open access: yesMetalurgija, 2009
The Underground coal gasification (UCG) of the coal seams is determined by suitable geological structure of the area. The assumption of the qualitative changes of the rock massif can be also enabled by application of geophysical methods (electric ...
T. Sasvári, J. Durove, B. Pandula
doaj  

Critical Analysis of Underground Coal Gasification Models. Part I: Equilibrium Models – Literary Studies

open access: yesJournal of Sustainable Mining, 2014
Purpose: Underground coal gasification is a very difficult process due to changes in the parameters over time and within the space of the reactor and a variety of phenomena that occurs there.
Alina Żogała
doaj   +1 more source

Mobilizing mine lands for biobased decarbonization strategies

open access: yesBiofuels, Bioproducts and Biorefining, Volume 19, Issue 6, Page 1483-1496, November/December 2025.
Abstract Over 163 000 ha of mine lands in Pennsylvania (PA) have the potential to produce willow as a feedstock for renewable energy generation. Each year these lands could produce between 454 000 and 907 000 dry Mg of willow, which can be a feedstock for bioenergy (i.e., biopower) with carbon capture and sequestration (BECCS) or sustainable aviation ...
Mallory Wahlstrom   +4 more
wiley   +1 more source

Deviated and Horizontal Wells Drilling Technology in Coal Seams [PDF]

open access: yesActa Montanistica Slovaca, 2006
Drilling in coal seams becomes more and more popular at the present time, especially due to the fact that coal can be exploited not only by subsurface or surface mining methods but also in much cleaner way – underground coal gasification.
Ján Pinka   +2 more
doaj  

Critical Analysis of Underground Coal Gasification Models. Part II: Kinetic and Computational Fluid Dynamics Models

open access: yesJournal of Sustainable Mining, 2014
Purpose: Underground coal gasification, as a complex and technically difficult process, in many aspects requires the support provided by computer simulations.
Alina Żogała
doaj   +1 more source

Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification

open access: yesEnergy Exploration & Exploitation, 2020
The heterogeneity of a rock mass under high temperature and its thermo-mechanical coupling characteristics are difficult problems to investigate. This situation brings considerable difficulties to the study of underground coal gasification under thermo ...
Xiaopeng Liu, Guangli Guo, Huaizhan Li
doaj   +1 more source

Key technologies for low-carbon modern coal-based energy

open access: yesMeitan xuebao
Coal energy has made a significant contribution to the development of human industrialization, but coal energy is faced with the major problem of high carbon emissions. Modern coal-based energy is a new path to crack the contradiction between coal energy
Shirong GE   +4 more
doaj   +1 more source

Drilling in Underground Coal Gasification with Coiled Tubing Technologies [PDF]

open access: yesActa Montanistica Slovaca, 2006
Underground coal gasification is the potential to provide a clean, efficient and convenient source of energy from coal seams where traditional mining methods are either impossible or uneconomical.
Monika Blišťanová, Lucia Sciranková
doaj  

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