Category: Transient Plane Source
Keywords: anisotropy, building materials, density, Fiber Saturation Point, Heat Capacity, Laser Flash Technique, Laser Flash Technique (LFT), LFT, Moisture Content, Thermal Conductivity, Thermal Diffusivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, Transverse Conductivity, Wood
Abstract: In this study, the researchers investigated the thermal conductivity, thermal diffusivity and specific heat of four types of wood: beech, birch, spruce and Douglas fir. The main factor influencing the thermal properties of the wood was the moisture content of each sample, which was manipulated by the researchers. Samples of each type of wood were taken and placed in a hot and wet air flow device for varying times in order to obtain varying moisture contents. The thermal properties were then measured using the transient plane source (TPS) technique. It was determined that the wood didn't have significant differences in the in-plane and through-plane conductivities due to the moisture content effect. The experimental results were compared to values produced using the laser flash technique (LFT). Thermal conductivity and specific heat were positively correlated with moisture content, while thermal diffusivity is negatively correlated with moisture content.
Reference: Holzforschung, 67, 4 (2013) 437-445