The theoretical heat transfer of flexible multilayer firefighting composite fabric including two stages of phase change materials (PCM) has been analyzed, and the designing method has been discussed in systematically. It is necessary to have simpler methods to evaluate the heat transfer through multilayer thermal insulation. A mathematical model has been developed to describe the heat flux through the multilayer firefighting fabric, where the heat transfer consists of thermal radiation, solid spacer and (PCM). This study discusses heat transfer mechanism of firefighting insulation material in specific high temperature and severe heat environment based on the testing results and their analysis.
Heat transfer, phase change materials, insulation materials, Flash over temperature
