| 摘要 |
PROBLEM TO BE SOLVED: To reduce the amount of desiccant used and to contribute to compactness and on-vehicle mountability of a refrigerating cycle taking carbon dioxide as a refrigerant by solving the problem of an increase in infiltration amount of water in the refrigerating cycle with carbon dioxide as the refrigerant. SOLUTION: In this refrigerating cycle taking carbon dioxide as a refrigerant, aluminosilicate-base zeolite is used as a desiccant of carbon dioxide refrigerant. The aluminosilicate-base zeolite has a pore diameter of 0.3 nm or more, and some or the whole of cations in counter ions have a smaller ion radius than potassium ion and have oxidation number equal to or more than bivalence. COPYRIGHT: (C)2008,JPO&INPIT
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