Importance

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Abstract

A radiant energy trap. This diffuse and direct radiant energy concentrator comprises at least one reflector, a refractor substantially prism shaped and a receiver interfaced with the refractor. The invention is capable of a solid angle of acceptance of radiant energy, equivalent to that of a flat panel collector, while maintaining a relatively high concentration ratio of diffuse light. The invention can be embodied as an effective hybrid solar electric and thermal collector. A unique yet simple geometry results in relatively high optical and thermal efficiency. The invention can be embodied as a low profile 3-D diffuse light concentrator, combining reflection, refraction, and total internal reflection to approach the thermodynamic limit. It minimizes materials cost to the limits of cost reduction with relatively high efficiency PV cells. The invention increases the utilization of available solar energy and greatly reduces installed system payback periods, compared to prior art.

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First Claim