| 摘要 |
<P>PROBLEM TO BE SOLVED: To carry out efficient heat exchange and heat recovery, without complicating the structure of a heat treatment circuit. <P>SOLUTION: The fuel cell system is provided with a fuel cell 1 and a heat treatment circuit. The heat treatment circuit is provided with a hot water storage tank circulation circuit, directly circulating hot water of a hot water storage tank 4, a fuel cell circulation circuit 3 circulating cooling water to the fuel cell 1, a cooling unit 12, and various heat exchangers 14, a cooling water heat exchanger 6 carrying out heat exchange between the hot water storage circulation circuit 3 and the fuel cell circulation circuit 2, a bypass circuit 15 circulating a coolant which passed the fuel cell 1 through the fuel cell circulation circuit 3 without passing the cooling unit 12, various hat exchangers 14 and the cooling water heat exchanger 6, a three-way valve 16 adjusting the flow of the cooling water passing the fuel cell 1 to a flow passing the bypass circuit 15, and a first as well as a second cooling water pumps 13, 17. The fuel cell circulation circuit 3 is so structured that the cooling water flows through the various heat exchangers 14, the fuel cell 1, the three-way valve 16, the cooling water heat exchanger 6, and the cooling unit, in that order. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
