Optical transmittance measurements on a solar collector cover of cylindrical glass tubes |
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Authors: | Carlyle S. Herrick |
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Affiliation: | Corporate Research and Development, General Electric Company, Schenectady, NY 12345, U.S.A. |
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Abstract: | The transmittance of unpolarized light through a solar collector cover made of cylindrical glass tubes in a coplanar parallel close-packed array is dependent on the orientation of the cylindrical axes of the tubes in the plane of the cover. A maximum transmittance occurs when the axes are perpendicular to the plane of the angle of incidence, and a minimum transmittance occurs when the axes are parallel to the plane.At all orientations and at all angles of incidence the tubular cover has a markedly greater transmittance than does a cover formed from two parallel sheets of window glass. |
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