| 摘要 |
PURPOSE:To effectively utilize the solar energy and improve the operation efficiency of the system by disposing a fan in the air passage connecting the hot air generator utilizing the solar heat with rooms, and controlling said fan by means of a sensor. CONSTITUTION:Fans F1, F2 are disposed in the air passages 5, 6 connecting the hot air generator H utilizing the solar heat with rooms R, and a sensor S1 to detect the hot air temperature is connected to the control device C. The room R is provided with a room sensor S2 that turns on and off an auxiliary heat source CA that supplies the auxiliary hot air. When the temperature of hot air chosen from the solar heat collector H1 or heat accumulating tank H2 is lower than the first set temperature, the fan F is stopped. If the chosen hot air temperature is higher than the first set temperature T1 and still higher than the second set temperature T2, the room temperature as detected by the room sensor S2 is compared with the desired temperature, and if the room temperature is lower than the desired temperature, the fan F is turned on.
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