Hemispherical Reflectance Results of the SolarPACES Reflectance Round Robin

M. Montecchi, C. Delord, O. Raccurt, A. Disdier, F. Sallaberry, A. García De Jalón, A. Fernández-García, S. Meyen, C. Happich, A. Heimsath, W. Platzer

Research output: Contribution to conferencePaper

10 Citations (Scopus)

Abstract

Mirrors are the first link in the energy-conversion chain from Sun to electricity-delivery in the grid. Shape and solar reflectance are the key-parameters of mirrors, respectively affecting how solar radiation is concentrated around the focus, and how much of the impinging solar power is reflected. In SolarPACES Task III, an expert group is drafting the solar reflectance guidelines; in order to speed up the discussion the SRRR round robin was launched at the beginning of 2013. Identical kits, each one consisting of ten specimens collected from eight cooperating producers, were distributed and measured at six research institutes, acting as evaluators. The kit includes both traditional (glass based) and innovative (first-surface) solar mirrors. The paper only reports on the simplest task among those of SRRR: the solar hemispherical reflectance measurement. Near-specular solar reflectance was also measured and compared but the results are still under investigation and are not part of this paper. The measurements were accomplished according to the guidelines. The differences among the achieved results are within the typical accuracy of spectrophotometers, demonstrating the reliability of the reflectance guidelines. The statistic of the deviations from the true value is analysed separately for each evaluator, and allows us to infer information abut the gauging-status of the adopted reference mirror, as well as the measurement reproducibility.
Original languageEnglish
DOIs
Publication statusPublished - 1 May 2015
EventInternational Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014 - Beijing, China
Duration: 1 May 2015 → …

Conference

ConferenceInternational Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014
CountryChina
CityBeijing
Period1/5/15 → …

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All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

Montecchi, M., Delord, C., Raccurt, O., Disdier, A., Sallaberry, F., De Jalón, A. G., ... Platzer, W. (2015). Hemispherical Reflectance Results of the SolarPACES Reflectance Round Robin. Paper presented at International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014, Beijing, China. https://doi.org/10.1016/j.egypro.2015.03.174