Particle Size Effect of Thermal Conductivity and Diffusivity of Loose Coal
WANG Wenqiang
YANG Xiaobin
LIU Wei
GUO Dandan
HE Chao
Abstract：The thermal conductivity and diffusivity of loose coal can he affected by different factors,and they are important parameters to research the spontaneous combustion of coal.But for the same coal,the thermal conductivity and diffusivity are mainly related to particle size.They can be measured meanwhile through the modified transient plane source method.Through the measurement of loose coal with small particle size and mixed loose coal,the change laws were got.The results show that,with the increasing of particle size,thermal conductivity decreases gradually;thermal diffusivity decreases first and then increases.When the weighted size of loose coal is the same,the thermal conductivity and diffusivity of mixed loose coal are affected by loose coal with smaller particle size.
Keywords：particle sizeloose coalthermal conductivitythermal diffusivitytransient plane source method
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 28-31 )