The aim of this work was to investigate the thermal behavior of solid wood used as building materials. Three tropical wood species namely Iroko (Milicia excelsa), Bilinga (Nauclea diderrichii), and Tali (Erythrophleum suaveolens) were chosen. The thermophysical properties in the longitudinal, radial and tangential directions were determined experimentally for different moisture contents. Asymmetrical hot plate method was used to measure the thermal conductivity and volumetric heat capacity. The influence of water content and the direction of the fibers on thermophysical properties of the species studied were investigated. The results show that thermal conductivity and volumetric heat capacity increase with moisture content, while the diffusivity decreases. In the wide range of moisture content considered, thermal conductivities varied between 0.1 and 0.6 Wm⁻¹ K⁻¹. The increase of moisture content by 1% induces a 0.2% increase in thermal conductivity for Bilinga, 0.4% for Tali and 0.3% for Iroko. Tali, whose density is the highest, presented high values of thermal conductivity in longitudinal direction but lowest values in radial and tangential directions compared to other species. Thermal conductivity is 2 to 3 times higher in the longitudinal direction than in the radial and tangential directions. The volumetric heat capacity was not influenced by the direction of the heat flow.

这项工作的目的是研究用作建筑材料的实木的热行为。三种热带木种分别是Iroko（Milicia excelsa），Bilinga（N auclea diderrichii）和Tali（Erythrophleum suaveolens）被选中。对于不同的水分含量，通过实验确定了在纵向，径向和切线方向上的热物理性质。采用非对称热板法测量导热系数和体积热容。研究了水含量和纤维方向对所研究物种热物理性质的影响。结果表明，热导率和体积热容随水分含量的增加而增加，而扩散率则降低。在广泛考虑的水分含量范围内，热导率在0.1至0.6 Wm ^-1  K ^-1之间变化。水分含量增加1％会导致Bilinga的导热系数增加0.2％，Tali的导热系数增加0.4％，Iroko的导热系数增加0.3％。与其他物种相比，塔里（塔里）的密度最高，在纵向上的导热系数较高，但在径向和切线方向上的导热系数最低。纵向方向的热导率比径向方向和切线方向的导热率高2至3倍。体积热容不受热流方向的影响。