| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar system capable of suppressing an event which prevents additional heat from being accumulated in a hot water storage tank and lowers solar thermal recovery efficiency.SOLUTION: When the heat recovery efficiency of solar thermal in a heat collection device 21 lowers since the temperature of hot water in the hot water storage tank 14 becomes a predetermined temperature or more during a heat collection operation, a hot water pouring valve 78 of a bath water heater 12 is opened to pour the hot water in the hot water storage tank 14 into a bath 3. In this way, the water is filled in the hot water storage tank 14 by an amount of poured hot water, thereby lowering the temperature of the hot water to recover the thermal recovery efficiency. |
