| 摘要 |
PURPOSE:To raise a temperatue of storing water effectively in a short period of time even if an insolation quantity is little, by providing heat exchangers on the upper and lower parts of a heat accumulation tank. CONSTITUTION:A thermal medium which is a liquid such as water to be heated at a solar heat collector 1 is led to heat exchangers 3, 4 through a duct 2 from the upper part of the solar heat collector 1 and returned to the lower part of the solar heat collector 1 from a duct 6 through a pump 5. The heat exchangers 3, 4 are connected with the upper and lower parts of a heat accumulation tank 7 in series. When a water temperature to be detected by a temperature detector 11 is high enough in enabling to heat a temperature of water in the heat accumulating tank 7 and the water temperature in the heat accumulating tank 7 based on a temperature detector 12 is low, the pump 5 is driven by the action of a control circuit 13. With this construction, water above the heat exchanger 3 of the heat accumulation tank 7 is heated and high temperature water is obtainable even if insolation hour is short. |
