| 摘要 |
PURPOSE:To facilitate the manufacture of a heat exchanger and the mounting of the heat exchanger in a heat storage tank to thereby collect the solar heat efficiently in accordance with weather conditions and the load by a method wherein the titled hot water supply system is constituted by a heat collecting circuit pipe for connecting the single heat exchanger and a solar heat collector, a space heating circuit pipe for connecting an upper heat exchange section of the heat exchanger and a radiator, a bypass circuit pipe for bypassing the solar heat collector and a circuit switching mechanism for making the above-mentioned pipes communicate with one another. CONSTITUTION:The heat exchanger 2A inserted into the heat storage tank 1 from the latter has a length substantially equal to the height of the tank 1 and is connected watertightly to the heat storage tank 1. Designated by 8A is the heating circuit pipe connected to an intermediate outlet port 21 of the heat exchanger 2A and the heat collecting circuit pipe 3 and designated by 9A is the radiator arranged midway in the space heating circuit pipe 8A and serving as an FF type hot air heater within which a blower 22 and a burner 23 are arranged. The heating circuit pipe 8A is sandwiched between the blower 22 and the burner 23. A motor- driven three-way valve 20 is provided at the junction of the bypass circuit pipe 24 bypassing the solar heat collector 4. Numeral 25 designates an electromagnetic valve provided at the outlet port of the heat exchanger 2A and Numeral 26 designates an electromagnetic valve arranged at the outlet port of the radiator 9A. The flow of an operating liquid is switched by the motor-driven three-way valve 20, the electromagnetic valve 25 and a controller all of which contitute the circuit switching mechanism. |
