Abstract
A planar reflector is preferred to curved alternatives as a concentrating or augmenting device for a flat-plate solar collector. The performance characteristics of a reflector-augmented collector have previously been determined, and are reviewed in this paper. Particular emphasis is placed on the practical application of the principal results to single reflector and V-trough systems. The usefulness of highly reflective, horizontal diffuse surface to a tilted collector, and the comparative performance of a faceted reflector containing two planar segments are also discussed.

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