Abstract
This study delineates the heat transfer through multilayer fire retardant fabrics exposed to different levels of a purely radiant heat source with an air gap between fabric and skin. This numerical model critically focuses on different distances (longitudinal, transverse, and angular) of the firefighters from the heat source. This investigation considers the effect of dynamic change of longitudinal, transverse, and angular distance from the heat source through the motion of the firefighters and also considers the reflectivity of the outer layer of the multilayer fabric to predict the safe time and distance of the firefighters from the radiant heat source to avoid serious thermal damage. Finally, the study explains the effect of reflectivity of the fabric, multi directional motion of the firefighters, and different levels of radiant heat fluxes to assess the safe zone for the firemen to restrict their motion in order to obliterate the second and third degree thermal injury.
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