| 摘要 |
An elongated shallow housing is provided including a closed lower side, an open upper side opposite the lower side and opposite ends between which said lower side extends. The open side includes a transparent panel secured thereover and a plurality of longitudinal side-by-side elongated trough members are disposed within the housing for absorbing solar energy incident thereon passing through the transparent panel. The trough members open forwardly toward the transparent panel and are spaced therefrom. The opposite ends of the housing include inlet and outlet air manifolds opening into the opposite ends of the trough members and the area within the housing between the trough members and the transparent panel and also into the interior of the housing below the trough members. Air inlet and outlet structure is provided and opens into the inlet and outlet manifolds and the housing includes a heat insulation panel disposed between the trough members and the closed lower side of the housing. Adjacent marginal edges of the trough members define openings therebetween spaced longitudinally along the trough members communicating the lower portion of the interior of the housing below the trough members with the upper portion of the interior of the housing above the trough members and the housing includes a plurality of elongated longitudinally spaced transverse members including tongue portions projecting down into and partially blocking the flow of air passing through the trough members.
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