Free-hanging parabolic trough reflectors for solar energy conversion systems
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United States of America Patent
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Feb 20, 2017
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Feb 20, 2017
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Abstract
A parabolic trough reflector assembly consists of (1) a free-hanging, flexible rectangular sheet that is highly reflective of solar radiation and (2) support hardware which critically supports the reflecting sheet at two opposing edges. Methods are disclosed for providing linear dimensions and edge slopes for the reflecting sheet that are consistent with a parabolic trough having specific predetermined dimensions and a predetermined focal length. Methods are disclosed for providing uniform loading for a reflecting sheet when it is critically supported as a free-hanging element. The methods involve tapering the thickness of a sheet, applying variable-thickness coatings to a sheet of uniform thickness, or fabricating discreet thickness variations into a sheet of otherwise uniform thickness.
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