Experimental Investigation of Phase Change Material as an Insulator in Hollow Brick Wall

In this paper, an experimental study has been conducted for using a PCM as a thermal insulation material in a south wall of a room. Two identical cubic rooms were fabricated from sandwich panels except for the south wall (test wall) was built as an Iraqi domestic wall. South wall orientation was chosen as the test wall due to the significant amount of solar radiation falling on it so that the study compared two test walls, a wall without PCM or not treated wall (NTW) and a wall embedded with PCM or treated wall (TW). The results show that using PCM in TW will increase the time lag by 1 hour and decrease the inner surface wall and room temperature by about 2.7 °C compared with NTW.