| 摘要 |
PURPOSE:To improve the heat collecting efficiency by a structure wherein lenses are arranged in a hexagonal pattern onto the front semi-spherical surface of a transparent spherical body and a reflecting plate is provided onto the back semi-spherical inner surface and yet the heat collector is located at the focal positions of the lenses. CONSTITUTION:A large number of the lenses 2 are arranged in a tortoise-shell pattern onto the front semi-spherical surface of the transparent spherical body made of glass or the like and the reflecting plate 4 facing inward is provided onto the back semi-sphercial inner surface and yet the heat collector 5 with a spiral heat collecting pipe 6 therein is located at the forcal positions of the lenses 2. The numeral 3 designates a hot water storage tank. |
