| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain further energy saving by effectively utilizing exhaust heat of a fuel cell device even if the capacity of a hot water storage tank in each of a plurality of fuel cell systems is reduced. <P>SOLUTION: Each of the plurality of fuel cell systems 1 includes: a heat exchanger 14 which performs heat exchange between hot water in the hot water storage tank 3 and a common-use heat medium; common-use heat medium circulation means 10, 22 which circulate the common-use heat medium in a common-use heat medium circulation path 9; a to-heat exchanger supply path 15 which supplies the common-use heat medium of the common-use heat medium circulation path 9 to the heat exchanger 14 and returns it to the common-use heat medium circulation path 9, being equipped corresponding to each of the plurality of heat exchangers 14; and a switching means 16 equipped in each of the plurality of the to-heat exchanger supply paths 15, the switching means 16 optionally switching between a supplying state where the common-use heat medium of the common-use heat medium circulation path 9 is supplied to the to-heat exchanger supply path 15, and a non-supplying state where the common-use heat medium of the common-use heat medium circulation path 9 is not supplied to the to-heat exchanger supply path 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
