Abstract
In the paper, the effects of three radiation heat transfer environments on prediction of compartment fire behavior are examined by using a model based on zone concept. First, a radiation heat transfer model considering diffuse reflection is formulated by using ray tracing method. And the following calculations are described by the consideration of direct and reflective heat transfers: (a) net heat gain of a layer, Qnet, (b) heat transfer from surroundings to a fuel, qe, (c) heat transfer to adjacent space through to the openings, QR, (d) wall surface temperatures, Tw. Next the theories are incorporated into the predictive model for compartment fire behavior. From the comparison of calculations and experimental results in every environment, the effect of radiation heat transfer environment on the prediction has been cleared.
