초록 ▼

The disclosure concerns various improvements in a solar energy plant of the kind in which incoming solar radiation is concentrated by a Fresnel reflector, i.e. a field of concentrating mirrors, and the concentrated radiation is focused into a solar receiver. By one improvement a dielectric mirror is

The disclosure concerns various improvements in a solar energy plant of the kind in which incoming solar radiation is concentrated by a Fresnel reflector, i.e. a field of concentrating mirrors, and the concentrated radiation is focused into a solar receiver. By one improvement a dielectric mirror is provided at a suitable level above the solar collector, to reflect the concentrated solar radiation into the collector. By another disclosed improvement a plurality of non-imaging secondary concentrators arranged in concentric zones is provided intermediary between the dielectric mirror and receiver. By yet another improvement the solar receiver is directly attached to a heat storage system.

대표청구항 ▼

A solar energy plant for the conversion of solar radiation into utilizable energy, comprising: a Fresnel reflector including a plurality of radiation concentrating mirrors installed on a base plane, said Fresnel reflector being in the form of a heliostats field in which said concentrating mirrors tr

A solar energy plant for the conversion of solar radiation into utilizable energy, comprising: a Fresnel reflector including a plurality of radiation concentrating mirrors installed on a base plane, said Fresnel reflector being in the form of a heliostats field in which said concentrating mirrors track the sun and having a focal point removed from the heliostats field by a focal length; at least one solar receiver placed close to said base plane; and an additional reflector mounted above said heliostats field close to said focal point so that concentrated solar radiation reflected by the heliostats field is redirected onto said at least one solar receiver; and wherein said additional reflector is in the form of a dielectric mirror, whereby an overheating of the additional reflector is avoided.