| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat storage device capable of performing high-efficiency heat storage operation without deteriorating performance of a heat pump whose heat source is especially CO2 refrigerant. <P>SOLUTION: This heat storage device has: a heat storage tank 1 incorporating a heat storage body 2; a circulation circuit circulating water between the heat storage tank 1 and the heat source 4; a water supply pipe 5 supplying the water to the circulation circuit or the heat storage tank 1; a hot water supply pipe 6 making hot water generated in the heat storage tank 1 flow out from the heat storage tank 1; a storage part 8 storing the water after passing the heat storage body 2; and a hot water bypass pipe 12 connecting the storage part 8 and the hot water supply pipe 6 through a mixing valve. By storing medium temperature water after flowing-in from the heat storage tank 1 and radiating heat to the heat storage body 2 in the storage part 8 and ending heat storage before the medium temperature water arrives at the heat source, most of the medium temperature water stored in the storage part 2 is used for hot water supply not through the heat storage tank 1, so that the high-efficiency heat storage operation can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT |
