Behavior of Drywall against Heating

Part3 Heat Conduction Analysis

Abstract

In order to understand the effect of sealed joint with regard to temperature distribution properties of Drywall, I ficused the boundary surface temperature of the heating surface board, air layer, the non-heated surface board. The result of this time, at about 300°C that Heat shrinkage of gypsum board increases ,Temperature gradient of gypsum board varied. Boundary surface temperature of the air layer was changed to Parabola. And Boundary surface temperature of the the non-heated surface board was changed to Straight line. By using the theory of one-dimensional steady state heat conduction, apparent thermal conductivity of air layer calculated. As a result, apparent thermal conductivity was about five as large as Literature values.