Multi-objective materials design of solar selective absorbers for concentrating solar power
Journal of Physics D: Applied Physics, cilt.59, sa.38, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 59 Sayı: 38
- Basım Tarihi: 2026
- Doi Numarası: 10.1088/1361-6463/aea914
- Dergi Adı: Journal of Physics D: Applied Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: solar energy conversion, solar selective absorber, concentrating solar power, multilayer coating, multi-objective optimization
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Concentrating solar power (CSP) systems span concentration ratios (C) from 10 to over 1000 and temperatures from 250 to over 1000 °C, yet solar selective absorber coatings are commonly optimized at a single operating point. This obscures the tradeoff between solar absorptance (α) and hemispherical thermal emittance (ϵ), limiting transferability across CSP technologies. This work formulates absorber design as a bi-objective materials optimization problem for five-layer stacks at 350, 450, 600, and 800 °C. Transfer matrix calculations coupled with multi-objective optimization produce Pareto design maps from temperature-restricted material pools. The number of distinct optimal designs increases from two at 350 °C to five at 800 °C, indicating that material selection becomes more dependent on operating conditions at elevated temperatures. Thermal stability constraints impose an efficiency penalty of up to 0.047 at 800 °C, driven by loss of broadband absorber and low-index dielectric functionality. At C = 1000, restricted pool designs achieve collector efficiencies of 0.947 at 600 °C and 0.891 at 800 °C while the optimal architecture changes across the temperature-concentration landscape. Pareto conditional attribution at 600 °C indicates that material selection is more influential than thickness for both objectives. These maps provide reusable, thermally screened coating design guidance for solar-thermal energy conversion.