| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar cell device in which a light-receiving face can be cleaned quickly when a contamination is stuck to the light-receiving face. SOLUTION: Cooling water which is pumped up from a drain 16 by a pump 18 is supplied to a cooling-water tank 20, the cooling water flows to a cooling- water passage 14, and a solar cell element 10 is cooled. A control unit 26 monitors the temperature of the solar cell element 10, and it monitors whether a bypass circuit is operated or not. When the temperature of the solar cell element 10 is high, or when the bypass circuit of the solar cell element 10 is operated, the control unit 26 increases the discharge amount of the pump 18, and it increases the water level of the cooling-water tank 20. As a result, the cooling water flows from a discharge port 28 on a light-receiving face which is formed by covering the solar cell element 10 with a glass 12, the cooling capacity of the solar cell element 10 is increased, or a contamination such as a leaf or the like which is stuck to the solar cell element 10 is cleaned. |
