Optical efficiency of solar concentrators by a reverse optical path method |
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Authors: | Parretta A Antonini A Milan E Stefancich M Martinelli G Armani M |
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Institution: | ENEA C.R. E. Clementel, Via Martiri di Monte Sole 4, Bologna, Italy. parretta@fe.infn.it |
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Abstract: | A method for the optical characterization of a solar concentrator, based on the reverse illumination by a Lambertian source and measurement of intensity of light projected on a far screen, has been developed. It is shown that the projected light intensity is simply correlated to the angle-resolved efficiency of a concentrator, conventionally obtained by a direct illumination procedure. The method has been applied by simulating simple reflective nonimaging and Fresnel lens concentrators. |
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