| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of improving operation efficiency of a heat pump unit in heating up of a tank without lowering high-temperature hot water supply performance. <P>SOLUTION: In this hot water supply system storing hot water heated by the heat pump unit 1 in the hot water storage tank 2, a plurality of hot water recovering ports D are formed on a side face of the hot water storage tank 2 at various height positions. The returned hot water is distributed to the plurality of hot water recovering ports D to be returned to the hot water storage tank 2 on the basis of a temperature of the returned hot water and a temperature distribution of hot water in the hot water storage tank 2 in returning the returned hot water from a liquid-liquid heat exchanger 3 to the hot water storage tank 2. <P>COPYRIGHT: (C)2008,JPO&INPIT |
