A numerical thermal approach to study the accelerated aging of a solar absorber material

Levelized cost of energy (LCOE) metric to characterize solar absorber coatings for the CSP industry

“…However, the US DOE did not provide the context of these numbers in spite of the wide variety of conditions in which receivers may work. For example, more than 200þ solar irradiance cycles of at least 100 W m À2 are easily reachable during a cloudy day [22]. 10,000 of these cycles would only represent a lifetime of 50 cloudy days.…”

“…Previous studies [20,22] showed that the aging of the coating is mainly represented by the evolution of its solar absorptance. For this reason, the thermal emittance is assumed constant and the following simplified expression of the receiver efficiency is used (eq.…”

Accelerated Aging of a Solar Absorber Material Subjected to Highly Concentrated Solar Flux

“…The thermal conductivity of the coating as well as the thermal contact resistance at the interface play an important role in the thermal performance of the absorber material [4]. One way to estimate their value is to use a photothermal method coupled with an inverse method [7].…”

“…A Solar Accelerated Aging Facility (SAAF) was developed at PROMES laboratory (Odeillo, France) [4]. The facility is depicted in Figure 2.…”

Concentrated photovoltaic thermal (CPVT) solar collector systems: Part I – Fundamentals, design considerations and current technologies

“…Concentration non-uniformities are independent of system performance since a CST's performance depends on the cumulative radiation falling on the absorber surface. However, for very high concentration ratios, thermo-mechanical stresses as a result of non-uniform illumination could damage the absorber [111]. Moreover, a CST harvests thermal energy from the entire solar spectrum.…”