| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat exchanger having high heat exchange efficiency, and being capable of exchanging heat between fluids flowing in three or more flow passages. <P>SOLUTION: The heat exchanger includes a shell 1 where a first fluid flows and a heat transfer tube 2 where a second fluid flows, which is housed inside the shell 1, and exchanges heat between the first fluid and the second fluid. The heat transfer tube 2 is composed of a multi-tube having an inner tube 2b inserted into an outer tube 2a, wherein the second fluid is made to flow in an outermost flow passage formed between the outer tube 2a and the inner tube 2a tube, and the first fluid is made to flow inside the inner tube 2b. The second fluid flowing in the outermost flow passage formed between the outer tube 2a and the inner tube 2b is subjected to heat exchange inwardly and outwardly with the first fluid flowing outside the outer tube 2a and with the first fluid flowing inside the inner tube 2b. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
