| 摘要 |
The present invention relates to an improved solar energy concentrating system. The system comprises a dual axis sun tracking paraboloid dish collector on a polar mount, with a re-reflecting mirror in top of the paraboloid dish, which reflects the concentrated solar irradiation into an opening in the paraboloid dish into a light pipe and with a movable third mirror redirects the light into a second light pipe along the polar axis, which with a fourth fixed mirror, sends the concentrated solar irradiation into a third light pipe to the cavity receiver. The invention replaces the need of flexible connectors to accommodate the movement of the mirror, with a combination of mirrors and light pipes, transferring the solar irradiation to a cavity-receiver. Dual axis tracking systems can capture more solar energy, on a more constant basis throughout the day and the year, and by reflecting directly into the cavity-receiver, thermal losses are minimized. |
| 主权项 |
1. A solar energy concentrating system comprising:
a) four concentrating and/or redirecting mirrors, forming a re-reflecting paraboloid dish collector (“RPDC”), which includes:
i) a main mirror in the shape of a large paraboloid dish formed by a plurality of paraboloid mirror segments;ii) a re-reflecting mirror, a much smaller paraboloid dish, preferably less than 10% of the radius of the main mirror and preferably less than 5% of the radius of said main mirror, located on a fixed position above the main mirror at such distance that is approximately the summation of the two abovementioned mirrors' focal distances;iii) an axial mirror, preferably a flat mirror, located in the proximity of the projected intersection of a central light pipe and an axial light pipe, and;iv) a cavity mirror, preferably a flat mirror, located on a fixed position at the projected intersection of an axial light pipe and a cavity light pipe. b) three lights pipes, including:
i) a central light pipe;ii) an axial light pipe, and;iii) a cavity light pipe. c) a sun-tracking mechanism, including:
i) a polar axis tracking mechanism, and;ii) a declination axis tracking mechanism. d) a solar cavity-receiver. |
