| 摘要 |
PROBLEM TO BE SOLVED: To prevent the biased flow of fluid to the neighborhood of the axis inside of a cylindrically-wound inner tube in a multi-tubular heat exchanger. SOLUTION: A flow distribution adjustment core 13 composed of a cylindrical closed tube used as a barrier of an exhaust gas flowing in an outer tube 11, is inserted into the inner tube 12 of the multi-tubular heat exchanger 10 composed of the outer tube 11 and the inner tube 12 cylindrically wound in the outer tube 11, and circulating the fluid in the inner tube 12 and the outer tube 11 to exchange heat between the fluids through a tube wall of the inner tube 12. By inserting the core 13, the exhaust gas is distributed to a side near the tube wall of the inner tube 12 while passing over the neighborhood of the axis of the inner tube 12 wasteful in heat exchange, thus heat exchanging efficiency can be improved. COPYRIGHT: (C)2008,JPO&INPIT
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