Haydite is widely used in building material because of its cheap price and rich source. Haydite itself is
a porous material that can be used in building palisade structure as carrier adsorbed phase change
materials[6-8]. In order to increase the amount of phase change material, haydites were broken. Lytay,
clay and shale were chosen in the experiment. Table 1 shows the properties of the haydites.
The amount of paraffin wax absorbed by the haydite in different conditions (1. normal pressure and
room temperature, 2. normal pressure and 100℃, 3. vacuum and room temperature.) was researched.
Different specimens (20g) were dried in the oven (80℃) for 48h, in order to dry of the water, the
specimens were then taken out and cooled down to room temperature, and the amounts of paraffin wax
absorbed in different conditions were measured in order to determined the optimal carrier