| 摘要 |
PROBLEM TO BE SOLVED: To increase heat accumulation amount of a power generation heat without increasing an installation space and a whole weight and without increasing cost by using a member originally included in a cogeneration system. SOLUTION: During power generation operating, an output port of a second three way valve 14 is switched from an output port 14b to an output port 14c to actuate a pump 3 for heating, and both of a thermally operated valve 85 for high temperature and a thermally operated valve 87 for low temperature are opened thereby performing switching from a first water circulating passage 4 to a second water circulating passage 12, then hot water heated by the power generation heat is introduced to the second water circulating passage 12. The heat of the hot water is supplied to a heat exchanger 18, and the hot water circulating inside circulation passages 84, 86 for heating is heated by the heat to perform heat accumulation. Since the power generation heat by the power generation is accumulated not only in a hot water storage tank 44 but also inside hot water utilizing circulation passage such as the circulation passages 84, 86 for heating, the heat accumulation amount is increased without increasing size and weight of the system. COPYRIGHT: (C)2004,JPO
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