Preservation of Sand and Building Energy Conservation

Ghosh, Avijit; Gupta, Surajit; Ghosh, Arup; Neogi, Subhasis

doi:10.1016/j.egypro.2016.11.210

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Several researchers have used laser ash apparatus to measure the thermal properties of coal and coal dusts (Wen et al 2015;Deng et al 2017bDeng et al , a, 2018b. However, Transient Plane Source (TPS) method is the most convenient and less time-consuming technique used nowadays to determine the thermal properties of materials (Ghosh et al 2016). In this study, we used Hot Disk (TPS 2500S) thermal property analyzer (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…22 depict increasing trend of best tted polynomial curves with R 2 = 0.992, 998 and 981 for thermal conductivity, diffusivity, and speci c heat capacity, respectively. The following empirical relations were developed between the thermal properties and particle size of coal dusts through regression analysis: k = -0.0006x 2 + 0.0123x + 0.083 (11) α = -0.0005x 2 + 0.0093x + 0.1177 (12) C p = 0.0005x 2 + 0.0242x + 0.7269 (13) where, k, α and C p are thermal conductivity, diffusivity and speci c heat capacity, and x is particle size of coal dust. These equations can be used to predict the thermal properties of coal dusts of known particle size.…”

Section: Effect Of Particle Size On Thermal Conductivitymentioning

confidence: 99%

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Effects of intrinsic properties, particle size, bulk density, and specific gravity on thermal properties of coal dusts

Sahu

Mishra

2023

Environ Sci Pollut Res

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Thermal properties of pulverized coal govern the heat transfer and greatly in uence the coal dust explosion and spontaneous combustion processes. This study measures the thermal properties of ve coal samples at six distinct particle sizes using an advanced Thermal Property Analyzer. The thermophysical properties of coal dust positively correlated with particle size. Thermal conductivity, diffusivity and speci c heat capacity increased with increase in the ash percentage, bulk density, and speci c gravity of coal dust, whereas they negatively correlated with xed carbon and volatiles content of coal.Empirical relations between the thermo-physical properties were developed. The thermal conductivity, diffusivity, and speci c heat capacity of coal dusts varied in the ranges of 0.091-0.147 W/mK, 0.125-0.164 mm²/s, and 0.715-0.945 MJ/m³K, respectively. With increase in particle size from < 38 to 500-1000 µm, thermal conductivity, thermal diffusivity and speci c heat capacity increased in the range of 25.60-32.89%, 9.76-22.11%, and 9.57-20.80%, respectively for different coal samples.

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Section: Methodsmentioning

confidence: 99%

Section: Effect Of Particle Size On Thermal Conductivitymentioning

confidence: 99%

Effects of intrinsic properties, particle size, bulk density, and specific gravity on thermal properties of coal dusts

Sahu

Mishra

2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

Effects of intrinsic properties, particle size, bulk density and specific gravity on thermal properties of coal dusts

Sahu

Mishra

2022

Preprint

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Thermal properties of pulverized coal govern the heat transfer and greatly influence the coal dust explosion and spontaneous combustion processes. This study measures the thermal properties of five coal samples at six distinct particle sizes using an advanced Thermal Property Analyzer. The thermo-physical properties of coal dust positively correlated with particle size. Thermal conductivity, diffusivity and specific heat capacity increased with increase in the ash percentage, bulk density, and specific gravity of coal dust, whereas they negatively correlated with fixed carbon and volatiles content of coal. Empirical relations between the thermo-physical properties were developed. The thermal conductivity, diffusivity, and specific heat capacity of coal dusts varied in the ranges of 0.091–0.147 W/mK, 0.125–0.164 mm²/s, and 0.715–0.945 MJ/m³K, respectively. With increase in particle size from < 38 to 500–1000 µm, thermal conductivity, thermal diffusivity and specific heat capacity increased in the range of 25.60-32.89%, 9.76–22.11%, and 9.57–20.80%, respectively for different coal samples.

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Preservation of Sand and Building Energy Conservation

Cited by 2 publications

References 7 publications

Effects of intrinsic properties, particle size, bulk density, and specific gravity on thermal properties of coal dusts

Effects of intrinsic properties, particle size, bulk density, and specific gravity on thermal properties of coal dusts

Effects of intrinsic properties, particle size, bulk density and specific gravity on thermal properties of coal dusts

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