Modeling the transfer of radiant energy to a bulk medium in electric furnaces with the upper position of the radiating elements

Abstract

A new design of suspended radiating elements, which was developed for heating systems of electric furnaces with moving hearth platforms and modular-trigger furnaces, is considered. The transfer of radiant energy on the surface of the firing modules and on the flow of expanded vermiculite is simulated. Analytical dependences are obtained for calculating the temperatures of radiating elements, a refractory base and a heat-insulating cover, as well as grains of the material itself. The possibility of a significant increase in the performance of modular-launch furnaces due to the fact that in the areas of pouring out of the firing modules the crowding of vermiculite will not lead to burnout of the radiating elements, as was observed in tape nichrome systems, is shown.