Research on thermal performance and hygrothermal behavior of timber-framed walls with different external insulation layer: Insulation Cork Board and anti-corrosion pine plate

Abstract

In order to research the thermal and humidity properties and thermal performance of the exterior wall materials with different thermal insulation layers of timber-framed buildings, the thermal and moisture parameters of exterior wall materials of two timber-framed buildings with Insulation Cork Board (ICB) and anti-corrosion pine board were studied in this paper. The heat transfer coefficients of the two timber-framed buildings outer walls were measured and analyzed. Based on the material parameters and temperature, relative humidity and water content of the two timber-framed buildings were predicted by WUFI simulation. The main results show that: Insulation Cork Board can absorb heat more than anti-corrosion pine board. Under the condition of isothermal, moisture content of Insulation layer structure material increases exponentially with the increase of relative humidity. The Insulation performance of the whole wall of building-A with Insulation Cork Board is better than that of building-B with anti-corrosion pine board. Moreover, the overall moisture content of building-A is lower than that of building-B with anti-corrosion pine board. This study is expected to provide useful reference for the optimization design of thermal performance and hygrothermal behavior of exterior wall structure of timber-framed buildings.