| 摘要 |
In a heat exchange device and method one heat exchange is performed between a fluid which flows through a heat exchange element and a fluid which flows in an internal shell surrounding the heat exchange element, and another heat exchange is performed between the fluid flowing in the internal shell and a fluid flowing in an external tank which surrounds the internal shell, with the first heat exchange performed through the wall of the heat exchange element and a second heat exchange performed through the wall of said internal shell.
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