Solar collector device

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Details

126438, F24J 302

Patent

active

044730659

ABSTRACT:
A solar collector is provided in which a focussing element precisely focusses solar radiation upon a collecting region of a collecting element during all times of the day, without necessitating daily motion of the focussing element. The collecting region is constructed to be more highly absorbing of the solar radiation than any other region of the collector which might be in thermal contact with the collecting region.
In some embodiments, the collecting region is a self-defined portion of the collecting element upon which the solar radiation is focussed at any given time. This is achieved by utilizing a collecting element which locally converts incident solar energy to another form of energy in a non-linear manner as a function of incident solar intensity. For example, the collecting element may be fabricated from a photochromic glass which darkens when impinged upon by the focussed radiation of the sun. The collecting region is automatically self-defined by the local darkened region of the photochromic glass, which traverses the collector as the sun traverses the sky.

REFERENCES:
patent: 3994279 (1976-11-01), Barak
patent: 4052976 (1977-10-01), Hinterberger

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