Principal component analysis of the effect of coal quality indexes on the maximum explosion pressure of coal dust

Ban, Tao; Li, Wenling; Guo-xun, Jing; Cheng, Long; Liu, Chuang; Sun, Yue

doi:10.2298/tsci200104104b

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…A reliable regression model is obtained to predict the LEL of the coal dust with different coal quality indexes. Additionally, an optimization problem for the LEL can be quickly established and solved, and the thermal instability [9] and the thermal oscillation [12][13][14] are two future topics.…”

Section: Discussionmentioning

confidence: 99%

Thermodynamics of the coal dust explosion: Main factors and optimal control

et al. 2022

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The explosion intensity and the low explosion limit of the coal dust explosion are affected by the calorific value and the heat transfer rate of the coal dust, which are closely related to the coal quality index. This paper studies experimentally the low explosive limit of the coal dust with different coal quality indexes. Based on the principal component analysis, the main factors affecting the low explosive limit are obtained by extracting the principal components from the coal quality indexes. Through comparative analysis, a regression model is proposed to predict the low explosive limit for practical applications.

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Section: Discussionmentioning

confidence: 99%

Thermodynamics of the coal dust explosion: Main factors and optimal control

et al. 2022

Self Cite

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“…CFD based simulation was made to investigate the fire scene of an arson fire in Quakers Hill, Sydney, in Nov 2011 [12]. There are many similar works on powder explosion with numerical studies [13][14][15]. An effective numerical algorithm was developed for a gas-melt two-phase flow and used to simulate a polymer melt filling process [16,17].…”

Section: Introductionmentioning

confidence: 99%

Numerical studies on an accidental flashfire at a water fun park by FLACS software

Chen

et al. 2022

THERM SCI

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A severe accidental fire with ?explosion? resulting from spraying coloured corn flour powder occurred at a water fun park in Taiwan. The possible fire scenarios were studied in this paper using Flame Acceleration Simulator(FLACS). Environmental conditions including wind action and solid boundary conditions were deduced based on government fire investigation and video records, and were used as the input parameters in simulation. Simulation results indicate that upon ignition of the sprayed powder, the maximum overpressure in the open space was only 0.03 bar gauge, with a dust flash fire generated without having an explosion. These environmental conditions or parameters and the simulation results together would give a fire scene that agrees with the accident observed, indicating that appropriate environmental parameters had been identified. Therefore, CFD simulation with carefully selected parameters can be used to reproduce explosion scenarios and to identify key factors in supporting accident investigations.

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Study on temporal and spatial distribution characteristics of urban non-point source pollution in Hohhot

et al. 2023

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The non-point source pollution is not easy to be controlled, and it is one of the important environmental problems facing the world. Taking Hohhot, a typical city in the arid semi-arid region in China, as an example, four monitoring sites in the city were selected, water samples from six rainfall events were collected, and pollutants such as heavy metals, ammonia, nitrate nitrogen, phosphorus and suspended matter were examined, and the water quality of the rain runoff was comprehensively evaluated by the principal component analysis and the correlation analysis. The results showed that the total phosphorus contents of monitoring points in the street were the largest and those of monitoring points in gas stations were the smallest in rainfall runoff. Arsenic, cobalt, and chromium were less than the Class I standard for environmental quality standards for surface water according to Chinese standard (GB 3838-2002). Concentrations of cadmium, copper, and iron were greatest in street monitoring sites, while nickel, lead, and zinc were greatest in roof monitoring sites, and manganese was greatest in car park monitoring sites. There was minimal contamination at gas station monitoring sites and the greatest contamination at street monitoring sites. Heavy metals and phosphorus were the main contributing factors to pollution at street monitoring sites, while the main contributing factors at gas station monitoring sites were total suspended substances.

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Principal component analysis of the effect of coal quality indexes on the maximum explosion pressure of coal dust

Cited by 3 publications

References 7 publications

Thermodynamics of the coal dust explosion: Main factors and optimal control

Thermodynamics of the coal dust explosion: Main factors and optimal control

Numerical studies on an accidental flashfire at a water fun park by FLACS software

Study on temporal and spatial distribution characteristics of urban non-point source pollution in Hohhot

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