Advanced cyclic accelerated aging testing of solar reflector materials

Wette, Johannes; Sutter, Florian; Tu, Mai; Fernández-Garcia, Aránzazu; Buendia, Francisco; Carvalho, Maria João; Cunha Diamantino, Teresa

http://hdl.handle.net/10400.9/3136

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Authors

Wette, Johannes

Sutter, Florian

Tu, Mai

Fernández-Garcia, Aránzazu

Buendia, Francisco

Carvalho, Maria João

Cunha Diamantino, Teresa

Abstract(s)

ABSTRACT: Lifetime prediction methods for the components of concentrated solar power (CSP) plants have been in the focus of interest of manufacturers and plant developers for the past years. Recently, an accelerated aging standard for solar mirrors was published by the Spanish AENOR committee [1]. This standard allows performing comparative testing but it is not suited to derive meaningful life-time estimations. Firstly, the testing defined in the standard is not aggressive enough to produce significant degradation on most of the materials and secondly, it has been shown that the passing of these tests does not guarantee a high durability during outdoor exposure [2]. These findings have proven the need for the investigation of more realistic procedures. To provoke the mechanisms that are detected during outdoor exposure, a more realistic application of environmental stresses is being investigated. In this work a series of tests is conducted in which several weathering stresses are combined and applied in a cyclic manner. Some of these cycles have shown to correlate better with real outdoor behavior.

Keywords

Materials Solar thermal collectors Concentrated solar power Aging tests

URI

http://hdl.handle.net/10400.9/3136

Citation

Wette, Johannes... [et.al.] - Advanced cyclic accelerated aging testing of solar reflector materials. In: SolarPACES 2018 Conference: Solar Power and Chemical Energy Systems, Casablanca, Morocco, 2-5 October, 2018, p. 1001-1002