Impregnation of wood with a paraffinic phase change material for increasing heat capacity
WOOD MATERIAL SCIENCE & ENGINEERING(2023)
Abstract
In this contribution, the impregnation of wood with a paraffinic phase change material (PCM) is investigated, specifically to increase the heat capacity of solid wood, which significantly influences the thermal inertia when used in buildings. Four wood species (beech, poplar, oak and spruce) were impregnated with different pressure processes in an autoclave. For poplar, up to 480 kg of PCM per m(3) of wood was deposited. For beech and spruce, also more than 200 kg of PCM per m(3) of wood was achieved. However, oak was hard to impregnate and only about 100 kg of PCM per m(3) was deposited. Leakage, which is undesired, occurred for all the wood species, especially for beech, but could be significantly reduced to less than 10% by increasing the viscosity of the PCM. The heat capacity was increased by one order of magnitude compared to clear wood, as measurements with differential scanning calorimetry showed. Simulations with an analytical model demonstrate the potential for damping temperature amplitudes in buildings in the summer month when applying PCM.
MoreTranslated text
Key words
Autoclave, impregnation, latent heat, leakage, phase change material, temperature damping
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined