Results 31 to 40 of about 25,960 (251)

The Elements Characterization of Conversion Low-Rank Coal through Carbonization Step to Activated Carbon

open access: yesChemical Engineering Transactions, 2023
East Kalimantan is a province that has the largest coal reserves in Indonesia. One type of coal that is widespread and has low economic value as an energy source is low-rank coal.
Alwathan Sofian   +4 more
doaj   +1 more source

Optimization of Atmospheric Fluidized Bed Combustion Boiler by Computational Fluid Dynamics [PDF]

open access: yesE3S Web of Conferences, 2023
Viscose rayon is a natural fabric from regenerated cellulose derived from wood pulp, bamboo, or cotton linters. The viscose rayon industry relies on electricity to generate steam for textile production.
Ramadhan Fajar, Gunawan Fergyanto E.
doaj   +1 more source

Incorporating Both Undesirable Outputs and Uncontrollable Variables into DEA: the Performance of Chinese Coal-Fired Power Plants [PDF]

open access: yes, 2007
There are two difficulties in doing an objective evaluation of the performance of decision-making units (DMUs). The first one is how to treat undesirable outputs jointly produced with the desirable outputs, and the second one is how to treat ...

core   +2 more sources

A Novel Artificial Intelligence Technique to Estimate the Gross Calorific Value of Coal Based on Meta-Heuristic and Support Vector Regression Algorithms

open access: yesApplied Sciences, 2019
Gross calorific value (GCV) is one of the essential parameters for evaluating coal quality. Therefore, accurate GCV prediction is one of the primary ways to improve heating value as well as coal production.
Hoang-Bac Bui   +5 more
semanticscholar   +1 more source

Co-Processing Lignocellulosic Biomass and Sewage Digestate by Hydrothermal Carbonisation: Influence of Blending on Product Quality

open access: yesEnergies, 2022
Hydrothermal carbonisation (HTC) can be integrated with anaerobic digestion (AD) for the treatment of digestate, resulting in a solid hydrochar or bio-coal and a process water, which can be recirculated back into AD to produce biogas.
Kiran R. Parmar   +5 more
doaj   +1 more source

An assessement of global energy resource economic potentials [PDF]

open access: yes, 2012
This paper presents an assessment of global economic energy potentials for all major natural energy resources. This work is based on both an extensive literature review and calculations based onto natural resource assessment data. Economic potentials are
Mercure, JF, Salas, P
core   +4 more sources

Research on Coal Calorific Value Prediction Based on K-Means Clustering and Ridge Regression Algorithm

open access: yes发电技术
ObjectivesThe calorific value of coal is one of the important evaluation criteria for measuring coal quality, and is also the main basis for valuation of power coal.
QIAO Shichao   +4 more
doaj   +1 more source

Correlation of fixed carbon content and calorific value of South Sulawesi Coal, Indonesia

open access: yesIOP Conference Series: Earth and Environment, 2020
This study aims to correlate fixed carbon content using proximate analysis and calorific value analysis of the South Sulawesi Mallawa Formation coal.
Anshariah, A. Imran, S. Widodo, U. Irvan
semanticscholar   +1 more source

UTILIZATION OF COAL BOTTOM ASH AS BRIQUETTE MATERIAL

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2019
Research has been carried out on the use of coal bottom ash as a material for making briquettes as an alternative fuel. Carbonized of rubber seed shells and Halaban wood were used as mixtures and tapioca flour as adhesives. The composition used in making
Ninis Hadi Haryanti   +3 more
doaj   +1 more source

CO2 Emission Factors for Coals [PDF]

open access: yesKemija u Industriji, 2015
Emission factors are used in greenhouse gas inventories to estimate emissions from coal combustion. In the absence of direct measures, emissions factors are frequently used as a quick, low cost way to estimate emissions values. Coal combustion has been a
P. Orlović-Leko   +3 more
doaj   +1 more source

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