| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the fluctuation of hot water supply temperature to the fluctuation of tapping quantity when hot water is supplied while operating heat pump heat source equipment 1a. <P>SOLUTION: An inlet position switching valve 8 is mounted for switching a return position of the hot water heated up by the heat pump heat source equipment 1a, between a high temperature water inlet portion 7c and a medium temperature water inlet portion 7d of a hot water storage tank 7, and a controller 20 controls each apparatus to tap the hot water heated up to a medium temperature by the heat pump heat source equipment 1a from a medium temperature water outlet portion 7f while returning the hot water from the medium temperature inlet portion 7d depending on the situation. As the medium temperature water in the hot water storage tank 7 acts as a buffer layer, the fluctuation of hot water supply temperature can be prevented, even when hunting occurs on a heated-up temperature immediately after the start of the heat pump heat source equipment 1a or the like, and the significant fluctuation in tapping quantity occurs during tapping, when the hot water is supplied while operating the heat pump heat source equipment 1a. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
