Surface radiant‐energy balance for structural thermal analysis

摘要

AbstractThe development of computer programs to model the effects of fire on structures has led to an increase in the variety of problems to which they are applied. Programs which provide the thermal analysis for such problems must determine the energy exchange between the structure and the fire environment, and this paper addresses the radiation aspect of this exchange. The radiant energy exchange of a surface exposed to any fire environment is considered in relation to equations used in such programs. With the aid of a simple model an alternative generalized expression is derived, which takes a simple form. Two equations, typical of those used in such programs, are compared with this generalized form and their shortcomings discussed. It is proposed that the expression derived in this work should be the preferred choice.