| 摘要 |
<p>A panel for collecting solar energy has a profiled rear surface (4) comprising elongated prismatic structures (5), one part of each of which comprises a photovoltaic cell (8). In one form, another part of each prismatic structure comprises a reflecting surface (6) and, to improve the efficiency of the panel, a part (12) of that reflecting surface may have the shape of part of a parabolic reflector. In another form, the reflecting surface (6) is omitted so that some solar energy can pass directly through the panel. The prismatic structures generally extend horizontally across the panel but they may be inclined to the horizontal, especially if the panel is positioned to face in a geographical direction other than that in which the sun attains its highest altitude.</p> |
