Abstract
In this study, the fundamental characteristics of ice slurry which is used for the dynamic type thermal energy storage system were investigated experimentally. Propylene glycol solution was used a thermal energy storage material. The ice slurry was produced by release of supercooling condition of the solution, while the solution was stirred. Then, the degree of supercooling and the concentration of the solution were varied as the parameter, and the observation of ice crystal right after the generation were carried out. The ice slurry after storage for several hours in the solution and the air was also observed to examine the variation of the characteristics of the ice slurry due to the storage. Moreover, the latent heat of fusion of the ice slurry was measured, and the relationship between the effective latent heat of fusion and the heat of dilution were revealed. These examinations were performed for ice slurry produced from another solutions which were ethanol solution and ethylene glycol solution, and the characteristics of the ice slurry were compared with each other from the viewpoint of the thermal energy storage material.
