The influence of the structure heterogeneity on the characteristics and conditions of the coal-water fuel particles ignition in high temperature environment

According to the results of the mathematical modeling the delay time of ignition of the coal-water fuel particles has been calculated. The “influence” of the ways of describing the thermal characteristics of CWF has been shown, which can be changed in the process of temperature increase on the delay time of ignition. It has been established that even if the maximum possible change of the coefficient of thermal conductivity (depending on the model λeff) deviation of the ignition delay time from the average values does not exceed 13%.