Study on Heat Conductivity Coefficient of Loose Coal Based on Dichotomy
YUE Gaowei
LI Haojun
WANG Zhaofeng
Abstract：Based on the laboratory tests and the relation of the specific heat capacity with the ambient temperature,study was made on the heat conductivity coefficient of the loose coal at different ambient temperature through finite element numerical simulation and with the dichotomy. The results showed that when the volatile matter of coal samples was known,the specific heat capacity of the coal sample had a linear relation with ambient temperature. With the heat transfer model of coal samples,the heat conductivity coefficient was selected by the dichotomy, the numerical simulation results of the variation law of coal sample temperature with time were compared with the measured results, which was gradually close to the determination of the heat conductivity coefficient of coal samples at different ambient temperature. Heat conductivity coefficient of coal sample increased linearly with the increase of the ambient temperature.
Keywords：loose coalspecific heatheat conductivity coefficientdichotomy
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 19-22,27 )