| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger enabling the insulation thereof from a fuel cell without largely lowering its cooling performance by dispensing with using an expensive electrically insulating liquid. <P>SOLUTION: This heat exchanger comprises a tube 131, fins 132, and resin tanks 110 and 120, and cools a coolant flowing in the fuel cell 10 by circulating in the tube 131. The tube 131 is formed of a resin material, and the fins 132 are formed of a metal material. The tube 131 is formed in a flat shape in cross section, the wall thickness t1 of the end part 131a thereof in the longer radial direction of the flat-shaped cross section is made larger than the wall thickness t2 of the flat surface parts 131b thereof along the longer radial direction. Also, partition walls 131c joining the flat parts 131b to each other are formed in the tube 131. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
