| 摘要 |
PURPOSE:To increase a solar heat collecting efficiency during a day time and provide a reflector with a self-cleaning capability, by arranging such that a multitude of curved recesses is formed on a reflector provided below a group of solar heat collecting elements and small diameter holes are respectively bored through the recesses. CONSTITUTION:A plurality of solar heat collecting elements 1 having an energy receiving section 4 provided inside a light transparent tube in which a vacuum condition is maintained is arranged in parallel in an equal plane, and a reflector 8 is provided below the group sof solar heat collecting elements 9. By so arranging, the incident solar rays of reflector can be efficiently reflected towards the receiving section of solar heat collecting element irrespectively of the sun's altitude, thereby permitting the heat receiving section to collect more calorie for improving an heat collecting efficiency during a day time. At the same time, the reflector is provided with a self-cleaning capability. |
