Abstract
A method to making ice slurry is one of key technology for cold-energy storage system. This study has been conducted to clarify the production of ice slurry by utilizing constitutional supercooling promoted by mixing of two aqueous solutions whose solute concentrations are different. In this technique, fine ice crystals are made under volume-catalyzed nucleation without heat transfer surface. In the experiments, cooled sucrose solution and water were mixed in the cylindrical vessel, and the ultrasonic vibration was applied to promote nucleation in the supercooled solution. It is found that the ice making process is classified into three characteristic pattern; stable ice making, concentration stratified type ice making, and no ice making. The characteristics of ice making were discussed with the mixing ratio and total flow rate of solutions.
