Radiant energy collector panel and system

Abstract From the Canadian patent

This invention provides a radiant energy collector panel comprising a plurality of open channels having an inwardly extending concave surface and a spaced opposed inwardly extending convex surface, said surfaces providing increased area exposed to radiant energy and adapted to reflect inwardly radiant energy of large incidence angle and to absorb radiant energy of small angle of incidence, and to reabsorb reradiation the curved, surfaces correspond to a spiral curve.