| 摘要 |
A hot-water supply system 200 includes: a first tank 5 for storing hot water for heating; a second tank 6 for storing hot water to be supplied to a hot-water tap 3; a heater circulation path 51 for supplying the hot water of the first tank 5 to a heater 4; a first path 53 that includes a first heat transfer portion 10a surrounding the exposed portion of the second tank to the inside of the first tank 5 and that connects the first tank 5 to a forward portion of the heater circulation path 51 so that the hot water of the first tank 5 can be supplied to the heater 4 through the first heat transfer portion 10a; and a second path 55 that includes a second heat transfer portion 11a disposed along the first heat transfer portion 10a, and that allows heat exchange between the hot water of the second tank 6 and the hot water flowing through the first heat transfer portion 10a due to the flow, in the second heat transfer portion 11a, of the hot water of the second tank 6.
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