Methods for Service Life Time Estimation of Aluminum Reflectors

Research output: Contribution to conferencePaper


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 difficult outdoor conditions without a significant loss in specular reflectance. In this work, samples of enhanced anodized aluminum reflectors protected by a sol-gel coating exposed at different weathering siteshave been analyzed with an innovative specular reflectometer and accelerated aging tests have been carried out in order to estimate the service lifetime. A new accelerated aging procedure is proposed, which consists in combining abrasion and corrosion testing.
Original languageAmerican English
Number of pages8
StatePublished - 2011
EventSolarPACES 2011 - Granada, Spain
Duration: 20 Sep 201123 Sep 2011


ConferenceSolarPACES 2011
CityGranada, Spain

NREL Publication Number

  • NREL/CP-5500-52525


  • accerated and outdoor weathering
  • aging of solar reflectors
  • filiform corrosion of aluminium
  • reflectometer
  • specular reflectance


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