Study of the Stability of a Selective Solar Absorber Coating under Air and High Temperature Conditions

O. Raccurt, A. Disdier, D. Bourdon, S. Donnola, A. Stollo, A. Gioconia

Research output: Contribution to conferencePaper

17 Citations (Scopus)

Abstract

Selective solar absorber material is one of the major components in the Concentrated Solar Power (CSP) technologies. Its optical properties determine the efficiency of the energy conversion from the concentrated sun irradiation to the heat recovered by the heat transfer fluid. Development of the CSP requires costs reduction for this technology. To achieve this goal, one way is the increase of the work temperature up to 400 - 500°C or more. For economic reasons, the bankable of CSP technology requires a lifetime over 25 years for components and so for solar absorbers. The development of solar receiver, able to operate under air, instead of vacuum conditions, is a challenge to reduce the costs. Along the 25 years of a CSP plant lifetime, solar absorber material is daily exposed to high levels of stresses: high solar flux, high thermal gradient. As the oxidation is one of the main factors involved in degradation processes air stability of the absorber coating under high temperatures should be studied as it could be a critical point in the solar field maintainability in case of accidental vacuum loss. In this article we present a durability study of selective solar absorber from Archimede Solar Energy (ASE) exposed in air at high temperature (up to 500°C). The results show a good stability of this materials up to 450°C during 3000h without change of solar absorptance and emittance. An analysis of the degradation process at higher temperature is presented.
Original languageEnglish
DOIs
Publication statusPublished - 1 May 2015
Externally publishedYes
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

Raccurt, O., Disdier, A., Bourdon, D., Donnola, S., Stollo, A., & Gioconia, A. (2015). Study of the Stability of a Selective Solar Absorber Coating under Air and High Temperature Conditions. Paper presented at International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014, Beijing, China. https://doi.org/10.1016/j.egypro.2015.03.107