| 摘要 |
PURPOSE:To collect the solar heat efficiently under saved energy by a method wherein the capacity of a water pump for circulating cold water through a heat collector and hot-water through a heat reserving tank is regulated. CONSTITUTION:A domestic hot-water supplying system is formed by a method wherein the heat reserving tank 1 is installed so as to obtain the height of water (h) in the tank 1, the heat collector 2 is installed so as to obtain the height (h'), the water pump 3 and a cold water pipe 5 are attached between the heat reserving tank 1 and the heat collector 2, and a hot-water pipe 7, for returning the hot-water into the heat reserving tank 1, is attached to the heat collector. After detecting that a circulating system in the cold water and the hot water, filling the pipelines, is completed, a voltage for the pump 3 is lowered to restrict an electric power consumption. Upon beginning the heat collection by the circulations of the cold water and the hot-water, the head H of the pump, lifting the cold water in the heat reserving tank 1 to the height H of the heat collector 2, is necessary, however, the head DELTAH plus a head corresponding to the resistance of the pipelines is sufficient enough during the circulation of the cold water and the hot-water. |
