Development of Wood Material for Form-Stable Phase Change Material (FSPCM) as Building Insulation

The building energy consumption has increased by more than 40%, there it is needed to be managed and controlled. Phase Change Material (PCM) as Latent Heat Thermal Energy Storage (LHTES) is the solution with high heat storage and small temperature changes during the phase change process. This research focuses on the PCM injected into the wood as material building insulation. This experiment was conducted the micro characteristics of the wood after the delignification and PCM injection process as well as the rate of leakage and impregnation. The woods used are merbau, meranti, and bamboo which are local wood from Indonesia. To the delignification process to make its porous structure by alkaline pretreatment with NaOH (2.5 mol/L) and Na2SO3 (0.4 mol/L) with distilled water and the wood was immersed in a solution of H2O2 (2.5 mol/L) with distilled water. Delignification wood was injected with paraffin, bees wax, and soy wax using the vacuum impregnation method. Based on from this result that known the FSPCM wood with merbau and meranti for the delignification process was successful in the presence of pores. The leakage test on merbau/soy wax and meranti/soy wax can maintain form material until 40°C and the highest levels of impregnation is merbau/paraffin 56.17%. From the result delignification process on wood can increase PCM absorption, and can improve performance of wood as building insulation.