Аннотация:The conditions of decomposition for intensive burning zone (IBZ) on three component (furnace gas, flame continuum, solid fencing) are formulated in this article. The limits of these components are defined. The scheme of heat flows is developed. The parameters of flows and their characteristics are defined. The purpose of that development is definition of resultant heat flow onto the flame continuum. Three regime of heat radiation in the IBZ are defined. That are uniformly distributed and directed (direct and indirect). The conditions of their existing and main features are formulated.