| 摘要 |
PROBLEM TO BE SOLVED: To directly apply to a contact-type ice thermal storage device for improving practicality by the cold heat medium of a silicone compound containing fluorine with improved separation property from water and a greater specific gravity than ice and water, in the ice thermal storage device for depositing ice particles by directly performing the contact heat exchange of water and non-soluble cold heat medium. SOLUTION: A nozzle 2 is arranged at the upper end of an ice-making part 1 and two pipes are connected to the nozzle 2. More specifically, a cold heat medium 3 is circulated and supplied from one cooling medium supply pipe 3a and water 4 is circulated and supplied from the other water supply pipe 3a. Also, the cooled cold heat medium is heat-exchanged with water, and cooled water is changed into ice. Further, since ice has a lighter specific gravity than water, an ice particle 9 is generated at the upper portion of a water layer. The cold heat medium 3 that is used at this time is alkylpolysiloxane containing at least one fluorine. The cold heat medium is a non-aqueous liquid body, exchanges heat by liquid - liquid contact with water, cools water and generates a fine ice particle, and then separates a cold heat medium 10 at a lower layer. |
