Patent ID: 6530369
Filing Date: 2003-03-11
Classification: F24S,Y02E

Abstract:
A solar radiation concentrating system for use in a solar energy plant, comprising at least two reflectors successively arranged along an optical path of the system, a first of said two reflectors being a primary concentrator in the form of a heliostats field consisting of a plurality of primary concentrating reflectors installed substantially on a ground plane, and a second of said reflectors is a tower reflector mounted on a solar tower substantially above said ground plane, said primary concentrating reflectors being adapted to reflect solar radiation incident thereon towards said tower reflector and said tower reflector being adapted to redirect the radiation to a solar receiver mounted close to said ground plane, the reflectors having such spectral characteristics as to be capable of highly reflecting the radiation in a reflection range of wavelengths and absorbing the radiation in an absorption range of wavelengths, and wherein the absorption range of wavelengths of said concentrating reflectors substantially includes the absorption range of wavelengths of said tower reflector, whereby the radiation which might be absorbed by the tower reflector is essentially excluded from the radiation incident on the tower reflector due to which overheating of the tower reflector which otherwise would occur is avoided.