The roof is for a building, such as a greenhouse, and comprises a reflector for capturing sun radiation and for provision of passage for visible light. It has at least oen trough-shaped roof part (10), which is curved in cross-section in a circular-round fashion. With the roof part is positioned a combination of a reflector (20) and a collector (30). The reflector comprises a support foil and a spectral selective coating, so that the reflector is capable of letting through visible light (42) and to reflect infra red heat radiation (41). The collector is positioned on the focus line (21) of the reflector, so that the collector is capable of receiving as great a part as possible of the reflected heat radiation. The reflector forms an integral entity with the roof part, with the important advantage that it is not necessary to have a separate support construction for the reflector, so that transmission of visible light can occur as unhindered as possible.
|Publication status||Published - 5 Oct 2007|