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Article

Optical Durability of Candidate Solar Reflectors

[+] Author and Article Information
C. E. Kennedy

K. Terwilliger

National Renewable Energy Laboratory (NREL), 1617 Cole Boulevard, M/S 3321, Golden, CO 80401-3393

J. Sol. Energy Eng. 127(2), 262-269 (Apr 25, 2005) (8 pages) doi:10.1115/1.1861926 History: Received April 28, 2004; Revised June 29, 2004; Online April 25, 2005
Copyright © 2005 by ASME
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Figures

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Glass mirror architecture
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% change from base-line solar-weighted hemispherical reflectance (93%) of Flabeg silvered thick-glass reflectors with proprietary multilayer paint system as a function of accelerated Ci65 WOM and outdoor exposure at APS, FLA, and NREL
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% change from base-line solar-weighted hemispherical reflectance (93%) of Pilkington and Spanish silvered thick-glass reflectors with Cu-less back layer and Pb-free paint as a function of accelerated Ci65 and NREL outdoor exposure
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% change from base-line solar-weighted hemispherical reflectance (93%) of Pilkington and Spanish silvered thick-glass reflectors with Cu-less back layer, Pb-free paint, and four adhesives as a function of accelerated Ci65 exposure
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% change from base-line solar-weighted hemispherical reflectance (92%) of Naugatuck silvered thin-glass reflectors with copper back layer and Pb-free paint system as a function of accelerated Ci65 and outdoor exposure at APS, FLA, and NREL
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% change from base-line solar-weighted hemispherical reflectance (92%) of Naugatuck silvered 1 mm thin-glass reflectors with low-Pb and no-Pb paint and with no substrate vs laminated to aluminum substrate with Mactac IF2012 and 3M 966 pressure sensitive adhesive as a function of accelerated Ci65 exposure
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% change from base-line solar-weighted hemispherical reflectance (92%) of Naugatuck silvered 1 mm thin-glass reflectors with low-Pb and no-Pb paint and with no substrate vs. laminated to aluminum substrate with Mactac IF2012 and 3M 966 pressure sensitive adhesive as a function of accelerated Ci65 exposure
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% change from base-line 7 mm Specular reflectance at 660 nm (78%) of Alanod Miro/4270kk aluminized reflectors as a function of APS, FLA, and NREL outdoor exposure and accelerated Ci65 exposure
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% change from base-line solar-weighted hemispherical reflectance of 3M ECP-305+ (94.5%) and 3M SS-95 (96%) as a function of NREL outdoor exposure
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% change from base-line solar-weighted hemispherical reflectance (93.5%) of ReflecTech Pilot-run and of Improved Commercial Prototype as a function of NREL and ACUVEX® outdoor exposure and accelerated Ci65 exposure
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% change from base-line solar-weighted hemispherical reflectance (96%) of SAIC ASRM construction with alumina batch process deposition rate from 1 to 22.5 nm/s as a function of outdoor exposure at NREL
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% change from base-line solar-weighted hemispherical reflectance (96%) of SAIC ASRM construction with 1.5 μ m alumina deposited at 2 nm/s by batch process as a function of APS, FLA, and NREL outdoor exposure and accelerated Ci65 exposure
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% change from base-line solar-weighted hemispherical reflectance (96%) of SAIC ASRM construction with alumina roll-coated deposition rate of 5, 10, and 20 nm/s and batch-coated deposition rate of 1 nm/s as a function of outdoor exposure at NREL

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