| 摘要 |
<P>PROBLEM TO BE SOLVED: To miniaturize an evaporator by enhancing heat transfer coefficient between a refrigerant and a tube in the evaporator using carbon dioxide as the refrigerant. <P>SOLUTION: In the evaporator having the tube 4a, a relation of passage length L of the tube 4a and an average inside diameter d of the tube 4a is set to 0.5×d<SP>1.2682</SP>≤L≤2.09×d<SP>1.2682</SP>. <P>COPYRIGHT: (C)2004,JPO |
