Measurement of true specific heats of bituminous coals of different rank, and of a high-temperature coke, in the temperature range 30–350 °C

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

“…Moreover, both Figs. 19 and 20 epitomize that the measured thermal properties of different sizes coal dusts are correct.…”

“…Therefore, measurement of thermal properties of coal dust is vital for better understanding of the heat transfer during coal dust explosion and spontaneous combustion processes. Thermal properties of coal depends on the temperature, density, composition, rank, and intrinsic properties (volatile, ash, carbon, and moisture content) of coal (Melchior and Luther 1982;Herrin and Demirig 1996;Wen et al 2015; Deng et al 2018a). Thermal conductivity of coal is comparatively much lesser than the rock (varies in range of 1-7 W/mK), and varies in the range of 0.22-0.55 W/mK (Herrin and Demirig 1996;Wen et al 2015).…”

“…However, they did not notice signi cant in uence of temperature on the thermal diffusivity in case of coal ash slags until the temperature of 673 K (Deng et al 2018a). Melchior and Luther (1982) measured the speci c heat capacity of bituminous coal and coke in the temperature ranges of 303-623 K, and found that the speci c heat is increasing with temperature. Zhumagulov (2013) Limited studies on thermal behavior of coal dust are available.…”