Standardization of Solar Mirror Reflectance Measurements - Round Robin Test: Preprint

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Within the SolarPaces Task III standardization activities, DLR, CIEMAT, and NREL have concentrated on optimizing the procedure to measure the reflectance of solar mirrors. From this work, the laboratories have developed a clear definition of the method and requirements needed of commercial instruments for reliable reflectance results. A round robin test was performed between the three laboratories with samples that represent all of the commercial solar mirrors currently available for concentrating solar power (CSP) applications. The results show surprisingly large differences in hemispherical reflectance (sh) of 0.007 and specular reflectance (ss) of 0.004 between the laboratories. These differences indicate the ... continued below

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11 pp.

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Meyen, S.; Lupfert, E.; Fernandez-Garcia, A. & Kennedy, C. October 1, 2010.

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Within the SolarPaces Task III standardization activities, DLR, CIEMAT, and NREL have concentrated on optimizing the procedure to measure the reflectance of solar mirrors. From this work, the laboratories have developed a clear definition of the method and requirements needed of commercial instruments for reliable reflectance results. A round robin test was performed between the three laboratories with samples that represent all of the commercial solar mirrors currently available for concentrating solar power (CSP) applications. The results show surprisingly large differences in hemispherical reflectance (sh) of 0.007 and specular reflectance (ss) of 0.004 between the laboratories. These differences indicate the importance of minimum instrument requirements and standardized procedures. Based on these results, the optimal procedure will be formulated and validated with a new round robin test in which a better accuracy is expected. Improved instruments and reference standards are needed to reach the necessary accuracy for cost and efficiency calculations.

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11 pp.

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  • Presented at SolarPACES 2010, 21-24 September 2010, Perpignan, France

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  • Report No.: NREL/CP-5500-49189
  • Grant Number: AC36-08GO28308
  • Office of Scientific & Technical Information Report Number: 992349
  • Archival Resource Key: ark:/67531/metadc1013602

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  • October 1, 2010

Added to The UNT Digital Library

  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 23, 2017, 8:47 p.m.

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Meyen, S.; Lupfert, E.; Fernandez-Garcia, A. & Kennedy, C. Standardization of Solar Mirror Reflectance Measurements - Round Robin Test: Preprint, article, October 1, 2010; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc1013602/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.