Inverse heat transfer modeling applied to the estimation of the apparent thermal conductivity of an intumescent fire retardant paint

摘要

Highlights?The apparent thermal conductivity of the intumescent char layer is estimated.?The procedure is based on the direct measurement of the growing char layer temperature.?The Inverse Heat Conduction Problem (IHCP) approach is adopted.?The results can be very useful to properly set-up the experimental tests.?This methodology is a starting point for defining an optimal standard test procedure.AbstractIntumescent paints are widely used as passive fire protective materials in the building sector, primarily with regard to steel framed structures. The fire resistance of commercial intumescent coatings is typically tested experimentally using expensive and time consuming large-scale tests; conversely, the increasingly common performance-based fire safety engineering approach requires the development of techniques t