| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently recover heat, without making the path for a heat exchange medium complex. <P>SOLUTION: Since electrochemical reaction of fuel gas and oxidizing gas in a fuel cell 40 is heat generation reaction in a fuel cell power generation system 10, both anode-off gas and cathode-off gas have heat. A circulation pump 51 circulates water or hot water which is the heat exchange medium 54 in a heat exchange medium circulation path 50, in which water or hot water returns into a hot-water storage tank 52 via an anode-off gas heat exchanger 42 and a cathode-off gas heat exchanger 44 arranged in series from the hot-water storage tank 52. Consequently, the heat exchange media 54, having the same origin, recover heat from the anode-off gas and the cathode-off gas, so heat recovery is performed efficiently. Moreover, since the heat exchange medium 54 is circulated in the heat exchange medium circulation path 50 in which both the heat exchangers 42, 44 are arranged in series, the path for the heat exchange medium 54 will not become complex. <P>COPYRIGHT: (C)2007,JPO&INPIT |
