Optical efficiency and incidence angle modifier characterization of a Linear Fresnel Reflector collector: Validation of a certified on-site test combining experimental measurements and simulation results

Abstract

The Linear Fresnel collector (LFR) is an emerging technology for concentrating solar power (CSP) and solar heating for industrial process (SHIP). A new standard has been published in 2022 in order to facilitate the certification of those products in CSP plants worldwide. However, up to now very few of this type of large-size collector have been officially tested by an accredited laboratory or certified by an accredited certification body. This paper summarizes the testing procedure and validation of a methodology used on a LFR by CENER an accredited laboratory for testing according to the standard ISO 9806 [20] for the certification of product by the American certification body [42]. The testing methodology used in this case study was based on the one defined for conventional solar collectors in quasi-dynamic test (QDT) state from the new international standard IEC 62862-5-2 [17] for CSP large-size LFR referring to the international standard ISO 9806 [20] and using optical simulation. The results of the optical and incidence angle modifier of this large-size LFR validates the testing methodology proposed based on the new standard IEC 62862-5-2 [17].