| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply system utilizing solar heat in which the number of components is reduced and construction work is easy.SOLUTION: A hot water supply system 11 utilizing solar heat includes: an atmosphere opening type heat storage tank 15 for storing a heating medium L heated at a solar heat collector 13; heating medium feeding piping 17 for feeding the heating medium L in the solar heat collector 13 to the heat storage tank 15; heating medium return piping 19 for returning the heating medium L in the heat storage tank to the solar heat collector 13; a heat exchanger 21 disposed in the heat storage tank 15 in a state in which one end part is connected to a water supply pipe 39, and the other end part is connected to a hot water tapping pipe 41, and performing heat exchange between the water supplied from the water supply pipe 39 and the heating medium L in the heat storage tank 15; a circulation pump 23 which is provided in the middle of the heating medium return piping 19 and which circulates the heating medium L between the solar heat collector 13 and the heat storage tank 15; a control device 25 for controlling the circulation pump 23; and a float 31 for holding the heat exchanger 21 at predetermined distance from a heating medium liquid level while floating on the heating medium L in the heat storage tank 15. |
