An experimental study of the thermal behavior of bricks integrated with PCM-capsules in building walls

Buildings are the major energy users and by 2035, they will be fourth largest source of greenhouse gas emissions. Phase change materials (PCMs) applied to shift peak-load off-peak-load, positively effecting efficiency building. In this paper, an experimental embedding PCM (Paraffin) with bricks in conventional wall layers is carried out. The effect on thermal diffusion inner surface studied. Capsules manufactured fit size holes inside filled Paraffin (147 kJ/kg latent heat, 38oC solidified 43oC liquidised) closed a way that prevents leakage. Each brick contained two rows (5 per row). placed at rate 5 capsules 10 brick. Three samples experimentally tested: traditional wall, containing capsules/brick capsules/brick. indoor test light intensity has been fixed 900 W/m2 during heating period for 4 hours remaining cooling. temperature measured recorded internal, external surfaces middle using K-type thermocouples datalogger. results indicated that, PCM- reduced heat flux 34.17% compared sample, stored 50% more than 5PCM-capsules lowest internal sample reference where difference 3°C.