WEBDec 1, 2018 · A mathematical equation to estimate calorific value of biomass briquettes based on the proximate analysis of briquettes was developed by using regression analysis. It can be inferred that the predicted data from the proposed model closely match with the experimental data with a R 2 value of and root mean square deviation (RMSD) of .
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WEBBomb calorimeters are employed in the food industry to measure the calorific values of food products, aiding in nutritional labeling and quality control. Research and Development: Scientists use bomb calorimeters in research and development activities to investigate the combustion characteristics of new materials, fuels, or chemical compounds.
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WEBThe experimental results indie that the hybrid kernel function is more suitable for forecasting the calorific value of coal gangue than that of a single kernel function and is better than other conventional forecasting methods.
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WEBJun 1, 2023 · 1. Introduction. Coal, as one of the world's most important energy and raw materials, is widely used in industrial heat production (Dai et al., 2021).With the rapid development of production and construction, the demand for coal in the developing world is increasing (Ruppert et al., 2021).Thus, determining the coal quality is particularly .
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WEBJul 5, 2020 · The accurate estimation of the calorific value of coal with the help of models is very important for the design and operation of coalbased technologies. This study proposes a new combined ...
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WEBMay 11, 2021 · Coal remains the most important source of energy in many countries. Thermal power plants and coal industry have an urgent need for realtime analysis of coal properties, especially for calorific value of coal, because the coal price is mainly dependent on its calorific value [1, 2].Currently, the Xray fluorescence (XRF) and .
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WEBAug 1, 2016 · The calorific value of solid fuels, also referred to as the gross calorific value (GCV) or the higher heating value (HHV), is a crucial property for its use as a fuel in energy systems. The HHV of coal as a resource can be predicted by more effective algorithms that use schedule information in engineering, like ultimate analysis, enabling fast ...
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WEBDOI: / Corpus ID: ; Estimation of higher heating value of coal based on proximate analysis using support vector regression article{Peng2015EstimationOH, title={Estimation of higher heating value of coal based on proximate analysis using support vector regression}, author={Tan Peng and Cheng .
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WEBJan 1, 2013 · Abstract. Based on research of the relationship between the industrial analysis of coal composition and the calorific value, a multiple linear regression support vector machine model for ...
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WEBApr 16, 2020 · The GCV, or higher heating value (HHV), is an indior of chemically stored energy content of a coal [7, 8].It is usually a decisive parameter in the assessment of the value of the coal and thereby provides a basis for its purchase agreement [9, 10].GCV is the amount of energy released during the combustion of a coal.
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WEBApr 12, 2022 · With the PLSAbased nonlinear regression model, online coal calorific value prediction from the multiband flame radiation features under the operating conditions used by the industrial boiler has ...
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WEBJul 25, 2016 · A Biomass Characteristics Index (BCI) is proposed to represent the relationship between bulk density and moisture content. A numerical framework is developed to determine the BCI. This index is used to estimate the biomass bulk density and moisture content before the calorific value calculation. A regression graph is .
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WEBJul 5, 2020 · Coal related business carries out a substantial contribution to the international economy. Coal is mined comme... Coal higher heating value prediction using constituents of proximate analysis: Gaussian process regression model: International Journal of Coal Preparation and Utilization: Vol 42, No 7 Get Access
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WEBJan 16, 2024 · Calorific value is the amount of energy released when a specific quantity of a substance, typically a fuel or food, undergoes complete combustion or metabolism. It is measured in units such as kilojoules (kJ) or kilocalories (kcal). In this article, we will cover the meaning and definition of calorific value, how to calculate with the formula of .
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WEBOct 1, 2011 · The efficiency is dependent, among others, on coal quality parameters, since the efficiency of the boiler is a function of gross calorific value and content of ballast in coal. The energy value of ...
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WEBNet calorific value. This is the calorific value of the fuel, excluding the energy in the steam discharged to the stack,and is the figure generally used to calculate boiler efficiencies. In broad terms: Accurate control of the amount of air is essential to boiler efficiency: Too much air will cool the furnace, and carry away useful heat.
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WEBJan 31, 2010 · Different 13 new formulae have been developed for estimating the calorific values of 20 different biomass samples from their proximate analyses data.
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WEBJan 1, 2019 · Semantic Scholar extracted view of "Estimation of low calorific value of blended coals based on support vector regression and sensitivity analysis in coalfired power plants" by Minfang Qi et al.
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WEBJul 1, 2009 · Relationships of ultimate and proximate analysis of 4540 US coal samples from 25 states with gross calorific value (GCV) have been investigated by regression and artificial neural networks (ANNs) methods. Three set of inputs: (a) volatile matter, ash and moisture (b) C, H, N, O, S and ash (c) C, H exclusive of moisture, N, O exclusive of .
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WEBFeb 15, 2018 · For such reasons, calorific value estimations based on ultimate (elemental) analysis results are reasonable since this method does not depend on the source of macromolecules and only considers the contents of C, H, N, S, and O elements in biomass. In fact, this method has been applied to estimate the calorific value of coal for very .
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WEBFeb 1, 2024 · The calorific value of solid fuels, also referred to as the gross calorific value (GCV) or the higher heating value (HHV), is a crucial property for its use as a fuel in energy systems. The HHV of coal as a resource can be predicted by more effective algorithms that use schedule information in engineering, like ultimate analysis, enabling fast ...
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WEBIn this study, the gross calorific value (GCV) of coal has been estimated using two types of coal analysis data. These are proximate data and spectral reflectance data in visible to near infrared ...
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WEBDOI: / Corpus ID: ; Online identifiion of the lower heating value of the coal entering the furnace based on the boilerside whole process models
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WEBAug 21, 2023 · Syngas from biomass gasifiion can be used in downstream process industries such as city gas, hydrogen production, etc. In this review, the effects of biomass feedstock properties, and gasifiion reaction conditions (temperature, gasifier type, etc.) on syngas properties are systematically reviewed. In summary, the cracking and .
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WEBThe end use of briquettes is mainly for replacing coal in industry for heat appliions (steam generation, melting metals, space heating, brick kilns, tea curing, etc) and power generation through gasifiion of biomass briquettes and for domestic uses. II. RELATED WORK Emerhi, E. A.[3] have found that the calorific value of briquettes ...
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WEBFeb 15, 2015 · Coal fired industries often have to use subquality or blended coals, and are often under offdesign conditions, causing efficiency degrade and excess pollutant emissions [9]. ... Linear and nonlinear regression analyses for coal calorific value prediction from monitoring of multiband flame radiation signals were made based on the .
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WEBThe energy value of coal, or fuel content, is the amount of potential energy coal contains that can be converted into heat. [1] This value can be calculated and compared with different grades of coal and other combustible materials, which produce different amounts of heat according to their grade. While chemistry provides ways of calculating ...
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WEBFurthermore, the estimation of calorific value of coal samples based on proximate analysis factors is performed using multivariable regression, the Minitab 16 software package, and the ANFIS, Matlab software package. ... (FANNs) have been extensively studied to present process models, and their use in industry has been rapidly growing .
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WEBJan 1, 2023 · Timely monitoring of the calorific value of coal is beneficial to combustion regulation during the operation of coalfired power plants. An insitu measurement system applied to power plants was ...
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WEBSep 26, 2018 · Typical calorific value for 45% moisture content of green wood chunks is 10 MJ/kg (refer to Fig. 7). Therefore, the estimated energy density of green wood chunks is calculated as 3500 MJ/m 3 (=350 kg/m 3 × 10 MJ/kg). For the kiln dry wood chunks of 45% moisture content, the calorific value is reported as MJ/kg . This means that the .
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WEBNov 21, 2018 · Much attention has been focused on reducing the use of petroleum products as fuels, so synthetic gas (Syngas) introduces a great opportunity for energy sustainable developments. Syngas is created either by gasifiion of plants biomass or waste products (carbonbased) pyrolysis. In principle, Syngas can be produced from any hydrocarbon .
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WEBGross 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. A novel evolutionarybased predictive system was proposed in this study for predicting GCV with high accuracy, namely the particle swarm optimization .
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WEBOct 1, 2015 · The calorific value of a coal, which is usually termed the higher heating value (HHV) (also termed as the gross calorific value, GCV), is an important property for its use as a fuel. HHV is defined as the amount of heat released when a unit mass of the fuel is burnt completely, and the combustion products are cooled under standard .
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WEBDOI: / Corpus ID: ; Estimation of gross calorific value based on coal analysis using regression and artificial neural networks article{Mesroghli2009EstimationOG, title={Estimation of gross calorific value based on coal analysis using regression and artificial neural networks}, author={Sh.
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WEBJan 1, 2014 · Given a 5% difference between gross and net calorific value, the net calorific value of coal was about 5,160 kcal kg −1 in 2005. From the perspective of coal consumers, demanding on highquality coal is growing as largescaled and standardized devices in energyintensive industries are more and more popular.
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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