| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot-water supply system capable of securing a hot water supply capacity necessary for a heat pump type hot-water supply system by keeping high energy efficiency. <P>SOLUTION: In this hot-water supply system, supplied water is supplied to a heat pump hot-water supply means 4, and the heated hot water flows from an upper area to a hot water storage tank 3. Further the supplied water flows to a lower area of the hot water storage tank 3, the water stored at the lower area is heated by a gas water heater 7, and the heated hot water flows from the upper area to the hot water storage tank 3. A temperature detector 9 measuring a temperature of hot water of the upper area in the hot water storage tank 3, and a temperature detector 43 for measuring a temperature of the hot water stored in the lower area with respect to the detector 9 are disposed in the hot water storage tank 3, the gas water heater 7 is controlled to be started and stopped on the basis of the temperature information of the temperature detector 9, and the heat pump hot-water supply means 4 is controlled to be started and stopped on the basis of the temperature information of the temperature detector 43. <P>COPYRIGHT: (C)2007,JPO&INPIT |
