Abstract
Moderate concentration in east-west aligned non-tracking, infinitely long, trough-like solar energy collectors is examined. Two designs are evaluated in detail. They are the one-and two-facet plane side-wall configurations. The maximum performance designs are shown not to be the most practical designs since they tend to require disportionately large reflectors. A significant reduction in reflector area can be made with only a small degradation of performance. At solstice a 9° acceptance angle is necessary for a minimum of eight hours of collection at optimum performance. Under this restriction the practical concentration ratios are limited to about 2 and 2.6 for the one- and two-facet designs, respectively.
Published Version
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