Experimental determination of the equivalent thermal diffusivity for porous coal-ash particles

The equivalent thermal diffusivity of spherical porous coal-ash particles has been determined by measuring the temperature response curve both in the center and on the surface. A general relationship between the equivalent thermal diffusivity of the porous coal-ash particles and the ash content with...

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Bibliographic Details
Published inCombustion and flame Vol. 91; no. 3; pp. 419 - 422
Main Authors Fu, Wei Biao, Zhang, Bai Li, Zheng, Shuang Ming
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.12.1992
Subjects
01 COAL, LIGNITE, AND PEAT
014000 - Coal, Lignite, & Peat- Combustion
440500 - Thermal Instrumentation- (1990-)
ASHES
BURNUP
CARBONACEOUS MATERIALS
COAL
COMBUSTION PRODUCTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
OTHER INSTRUMENTATION
PHYSICAL PROPERTIES
POROUS MATERIALS
RESIDUES
TEMPERATURE MEASUREMENT
THERMAL DIFFUSIVITY
THERMODYNAMIC PROPERTIES
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Summary:The equivalent thermal diffusivity of spherical porous coal-ash particles has been determined by measuring the temperature response curve both in the center and on the surface. A general relationship between the equivalent thermal diffusivity of the porous coal-ash particles and the ash content within the coal is obtained. Based on this relationship, prediction of the burning rate of a large coal char particle becomes possible.
ISSN:0010-2180
1556-2921
DOI:10.1016/0010-2180(92)90068-Z