Development of phase change material integrated oriented strand board for thermal energy storage
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This study is attempted to develop energy storing oriented strand board (OSB). Energy storing capability is achieved by integrating phase change material (PCM) in the wood board. The effect of thermal energy storage in the building envelope is to reduce indoor temperature fluctuations and delay air temperature maximum to off-peak demand period and it will help to reduce the energy consumption in buildings envelop. In particular, we developed thermal energy storing shape stabilized phase change materials (SSPCM) integrated oriented strand board (OSB) wood based panels. High density polyethylene was used as a supporting material to prevent the leakage of liquid PCM during phase change. Different additives were added to increase the percentage of PCM that can be used in SSPCM preparation without leakage during the phase change, to serve as flame retardant, or to enhance the bonding between the SSPCM and wood strands. Three types of flame retardants were used, purified expanded graphite (EG), graphite nanoplatelets (xGnP) and nano magnesium hydroxide. The results of this study show that the integration of SSPCM in oriented strand board lowers the heat flux as compared to OSB without SSPCM.