| 摘要 |
PROBLEM TO BE SOLVED: To perform heat exchange without needing a heat exchange fluid such as cooling water. SOLUTION: Main pipes 1 and sub-pipes 2 are bundled in close contact with each other, and the outer circumference of the bundled main pipes 1 and sub-pipes 2 is covered with a heat insulating material 3 to perform direct heat exchange between the fluid in the main pipes 1 and the fluid in the sub-pipes 2, whereby the respective fluids are cooled or heated through the pipe walls of the main pipes 1 and the sub-pipes 2. COPYRIGHT: (C)2007,JPO&INPIT
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