| 摘要 |
PURPOSE:To enable hot water kept at a high temperature to be supplied without having to conduct additional heating by a method wherein in case no hot water supply from a hot water supply pipe is made the hot water heated by a solar heat collector flows into the upper part of a heat accumulator reservoir, whilst in case hot water supply is made the hot water is returned approximately central part thereof. CONSTITUTION:When a tap (not shown) is opened to supply hot water from a hot water supply pipe 6, the flow of the hot water is detected by a flow switch 10 to switch over a three-way valve 11 so as to pass the hot water through a return pipe 4-4b. As a result, the hot water heated by a solar heat collector 1 flows into the approximately central part of a heat accumulating reservoir 2 so that the hot water hept at a high temperature in the upper part of the reservoir 3 may remain. Whilst, in case no hot water supply is made, the three-way valve 11 is changed over so that the hot water may pass through a return pipe 4-4a. Consequently, the hot water heated by the solar heat collector 1 flows into the upper part of the reservoir 2 to thereby store in turn hot water from the upper part of the reservoir 2. |
