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 ...
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 .
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.
WEBJul 15, 2018 · 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 ...
WEBJan 6, 2021 · Incorporating renewable hydrogen (green H2) in the coal to methanol process plays a significant role to achieve the reduction of carbon intensity and improve energy efficiency and economic ...
WEBJun 1, 2024 · Therefore, the combination of these two technologies can realize the measurement of the whole components of coal, which is the optimal choice for measuring coal calorific value. Recently, we have successfully developed a rapid coal calorific value analyzer based on NIRSXRF technology [21], which has been applied in a .
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.
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 ...
WEBJul 5, 2020 · This study aims to develop a globally valid prediction model for coal higher heating value (HHV). For the first time, the Gaussian process regression (GPR) method is performed to build the predicti...
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
WEBSep 28, 2018 · Calorific value is an important indior to evaluate the comprehensive quality of coal, and its realtime and rapid analysis is of great significance for optimizing the coal blending process and ...
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 .
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 .
WEBJan 1, 2021 · Therefore, a literature review of existing data on heating values of coal, char, and tar was conducted to expand on previously published efforts. In the process of gathering data on coalrelated compounds, data on biomass and other gaseous, liquid, and solid fuels were added to the data set.
WEBDOI: / Corpus ID: ; Research on onsite measurement factors and performance of coal calorific value based on laser ignition article{Zhang2023ResearchOO, title={Research on onsite measurement factors and performance of coal calorific value based on laser ignition}, author={Xuegang Zhang .
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 ...
WEBBhabani S. Das. In 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 ...
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 .
WEBJul 3, 2023 · Mason conducted research work on 775 coal samples of all rank types and proposed an empirical relationship for estimating the calorific value of coal from ultimate analysis result and on further analysis with Dulong's, [19, 20] and formula, it has been found that data set gave poorer result.
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.
WEBThe GCV of China coal is predicted using 1400 data points in this paper. The support vector machine (SVM) is used to determine the progress of the estimating process, and the estimating robustness is assessed. The SVM model outperformed the three existing models in terms of accuracy and robustness, according to the comparative research.
WEBEstimate the higher calorific value and the lower calorific value of this fuel, taking the specific enthalpy of the water vapour formed by combustion to be 2442 kJ/kg. Solution: One kg of carbon burning to CO2 liberates 35000 kJ, and one kg of hydrogen liberates 143000 kj, when the products of combustion are cooled down to 25°C.
WEBApr 1, 2019 · A total of 28 certified coal samples that purchased from Jinan Zhongbiao Technologies Co Ltd. in the form of powder were used in this study. The certified calorific value of the studied coal samples were listed in Table the accuracy and precision of LIBS were heavily affected by the inhomogeneity of the sample, all powder samples .
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