Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 107, Issue -, Pages 37-45Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2012.07.027
Keywords
Aluminum solar reflector; Outdoor weathering; Specular reflectance; Scattering; Localized corrosion of aluminum; Avrami equation
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In order to reduce electricity generation costs of concentrating solar power (CSP) technologies, new low-cost reflector materials are being developed. These materials need to withstand harsh outdoor conditions without a significant loss in specular reflectance. In this work, samples of enhanced anodized aluminum reflectors protected by a sol-gel coating that have been exposed at different weathering sites were analyzed with an innovative specular reflectometer in order to monitor corrosion and scattering caused by surface roughness. A model to estimate the specular reflectance as a function of exposure conditions at different weathering sites has been developed. (C) 2012 Elsevier B.V. All rights reserved.
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