| 摘要 |
<P>PROBLEM TO BE SOLVED: To heat an oxidation gas by using heat of a fuel gas exhausted from a fuel cell to improve energy efficiency of the whole of a fuel cell system. <P>SOLUTION: A circulation passage 202 of the fuel gas is formed in a fuel cell stack 100 using a high-temperature film, and the circulation passage 202 is connected to a heat exchanger 27 arranged in an air introduction passage 123 for supplying air to the fuel cell stack 100. The high-temperature fuel gas is cooled by the heat exchanger 27, and heated by the air. By the heat exchanger 27, output of a heater H for heating the air can be saved, and heat resistance strength of accessaries arranged in the circulation passage 202 on the downstream side of the heat exchanger 27 can be lowered. <P>COPYRIGHT: (C)2007,JPO&INPIT |
