Experimental Study of Ignition of Electrode Coal by Thermal Radiation
V. A. Arkhipov, V. T. Kuznetsov, N. N. Zolotorev, S. A. Basalaev
National Research Tomsk State University, Tomsk, Russia
Keywords: electrode carbon, thermal radiation, heat flux density, ignition delay time, formal kinetic constants
Abstract
The results of an experimental study of the ignition of electrode carbon samples heated by an integrated thermal radiation flux are presented. The experiments were conducted using a Uran-1 radiation heating system in an oxygen atmosphere at different pressures (0.1 and 1.1 MPa) with a heat flux density of 75 to 314 W/cm2 incident on the sample surface. Ignition temperatures and the dependence of the ignition delay time on the heat flux density were obtained. The measured dependences were used to determine the formal kinetic constants of the process within a heterogeneous ignition model.
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