| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent freezing of a chilled water flow passage and an ice water flow passage by controlling preheating of chilled water when generating ice water, in an ice thermal storage method. <P>SOLUTION: In the ice thermal storage method, the temperature of chilled water supplied from an ice thermal storage tank 9 is adjusted by a chilled water preheater 3. The chilled water of which temperature is adjusted is made in a supercooling state by a supercooling device 5, and by releasing the supercooling state, ice is generated. In the state where the temperature of the chilled water is detected and preheating is performed by the chilled water preheater 3, when the temperature of the chilled water before release of the supercooling state reaches a supercooling release shortage temperature region, preheating of the chilled water by the chilled water preheater 3 is stopped until the temperature of the chilled water gets out of the supercooling release shortage temperature region. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
