Caron, Simon und Garrido, Jorge und Ballestrin, Jesus und Sutter, Florian und Röger, Marc und Manzano-Agugliaro, Francisco (2021) A comparative analysis of opto-thermal figures of merit for high temperature solar thermal absorber coatings. Renewable and Sustainable Energy Reviews, 154 (111818). Elsevier. doi: 10.1016/j.rser.2021.111818. ISSN 1364-0321.
![]() |
PDF
- Verlagsversion (veröffentlichte Fassung)
20MB |
Offizielle URL: https://www.sciencedirect.com/science/article/pii/S1364032121010868
Kurzfassung
Solar thermal absorber coatings play a key role in the thermal efficiency of receivers for applications in the field of Concentrated Solar Power (CSP). The development of stable spectral selective coatings with a high solar absorptance αsol and a low thermal emittance εth is often desired to reduce thermal losses. However, quantitative indicators describing selectivity and the trade-off between solar absorptance and thermal emittance is seldom discussed in the literature. In this review, relevant opto-thermal figures of merit are analyzed for the comparison of reference solar thermal absorber coatings, including real and ideal coatings, both black and spectral selective. The comparison is made for a temperature ranging from 25 to 1000 °C and for a concentration factor ranging from 20 to 1000, based on spectral data measured at room temperature from 0.25 to 20 μm. New figures of merit are introduced, i.e. a normalized selectivity ratio Si*, a trade-off factor Ztrade-off, a normalized solar reflectance index SRI* and a peak efficiency temperature Tpeak,opt. These metrics are derived from existing figures of merit and adapted for CSP. The set of figures of merit analyzed in this review offer a complementary perspective for the detailed characterization of any coating opto-thermal performance. For solar thermal absorber coatings, thermal efficiency ηthermal and peak efficiency temperature Tpeak,opt are respectively deemed more insightful than opto-thermal efficiency ηopt-th and maximum steady-state temperature TSST,max, when comparing the relative opto-thermal performance of two coating formulations.
elib-URL des Eintrags: | https://elib.dlr.de/145491/ | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | A comparative analysis of opto-thermal figures of merit for high temperature solar thermal absorber coatings | ||||||||||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||||||||||
Datum: | 9 November 2021 | ||||||||||||||||||||||||||||
Erschienen in: | Renewable and Sustainable Energy Reviews | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 154 | ||||||||||||||||||||||||||||
DOI: | 10.1016/j.rser.2021.111818 | ||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||
ISSN: | 1364-0321 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Concentrated solar powerAbsorber coatingSolar absorptanceThermal emittanceSpectral selectivityThermal efficiency | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||||||||||||||
HGF - Programmthema: | Thermische Hochtemperaturtechnologien | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SW - Solar- und Windenergie | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Condition Monitoring | ||||||||||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Solarforschung > Qualifizierung | ||||||||||||||||||||||||||||
Hinterlegt von: | Kruschinski, Anja | ||||||||||||||||||||||||||||
Hinterlegt am: | 12 Nov 2021 11:28 | ||||||||||||||||||||||||||||
Letzte Änderung: | 16 Nov 2021 13:52 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags