EFFECT OF VARIATION OF THE PHYSICOCHEMICAL PROPERTIES OF A PHENOLIC CARBON PLASTIC ON NONSTATIONARY HEAT AND MASS-EXCHANGE IN HIGH-TEMPERATURE DESTRUCTION IN A GAS-FLOW

Unsteady heat and mass exchange characteristics of a phenolic carbon p lastic in a flow of an inert gas have been studied experimentally and theoretically. Temperature fields and amounts of thermochemical destru ction have been examined with variation of the density of the coke res idue and the heating rate and thermal properties of the material. It i s shown that, with increase in the convective heat flutes and the gas deceleration, temperature, it is necessary to take into account the de pendence of the thermal properties of the material on the heating rate . A method of taking into account this dependence is proposed.