| 摘要 |
PURPOSE:To eliminate the need for power or sophisticated control to supply hot water to a hot water storage tank, prevent an increase in the capacity of the hot water storage tank and make the best use of solar heat. CONSTITUTION:A water inlet 1a of a solar heat collection device 1 is connected with a water service pipe whereas a hot water outlet 1b of the solar heat collection device 1 is connected with a hot water storage tank 2 which is built-in with a heater 3. When city water is supplied from the water inlet 1a of the solar heat collection device 1, the hot water in the solar heat collection device 1 is supplied to the hot water storage tank 2 from the hot water outlet 1b to the solar collection device 1. The city water preheated by solar heat is heated by an electric heater 3 late at night, and it is possible to cut off the power consumption dramatically. |
