| 摘要 |
This invention relates to a solar collector (1), comprising a tubular housing (2) which is provided inside the space of the housing (2) with an absorber (3) for absorbing solar radiation (4) across virtually the entire surface of the tubular housing (2); one or more surfaces (5) reflecting solar radiation for indirectly irradiating the part of said absorber (3) which is located on the shadow side of the tubular housing (2), at least one of the reflecting surfaces (5) extending up to at least the horizontal tangent (A) on the outermost point of the absorber (3) which is located on the side of the housing (2) on which direct solar radiation impinges; in which the solar collector (1) according to the invention is characterized in that the surfaces (5) reflecting the solar radiation and the absorber (3) are designed such that all solar radiation (4) incident at right angles impinges on the absorber (3), on the one hand directly and on the other hand by reflection on the reflecting surfaces, in such a manner that the sine of the angle of incidence of said radiation on the absorber (3) is substantially equal to 1. |
