Low-Cost Mirror Concentrator Based on Inflated, Double-Walled, Metallized, Tubular Films

摘要

A potentially low-cost, inflatable plastic solar mirror concentrator based on segments of a cylinder joined along the length of the collector on a plane passing through the axis of the absorber tube was designed and built. This design results in a savings of approximately 40% in the amount of window and mirror material and in a savings of about 20% of the land area occupied by a single collector when compared to a fully cylindrical one. The type of construction permits the assemblying of the mirror/window envelope to the collector without disturbing the collector frame, absorber tube, or the associated plumbing. Aluminum foil-plastic laminates were used as an alternative to aluminized polyester films, because of their potential low-cost and durability. Specially uv stabilized and polyester scrim reinforced flexible PVC film was developed for use as the outer cover material. (ERA citation 06:028500)