Article In: orcid, scopus, cienciavitae
Thermal resistance of solar volumetric absorbers made of mullite, brown alumina and ceria foams under concentrated solar radiation
Solar Energy Materials and Solar Cells
— 2019
Key information
Authors:
Published in
June 1, 2019
Abstract
Three semi-closed open cell ceramic foams, namely mullite, brown alumina and ceria-based materials, were subjected to thermal cycles by direct concentrated solar irradiation to study their thermal resistance in view of their potential application as photothermal devices, such as volumetric solar absorbers. After cycling, the extent of the damage in the samples was determined by measuring the retained crushing (compressive) strength. The extent of the damage was found to depend on the composition, the applied surface temperature difference (ΔT) of thermal cycling and the temperature gradient across the foams. It was found that the retained crushing strength gradually decreased with an increase in ΔT and was independent of the number of thermal cycles in the range investigated. The ceria foams displayed the poorest thermal shock resistance. Experimental data fit the Gibson-Ashby model for the thermal shock resistance of ceramic foams, for a constant C = 0.65.
Publication details
Authors in the community:
Fernando de Almeida Costa Oliveira
ist126733
Luís Manuel Guerra da Silva Rosa
ist11630
Publication version
AO - Author's Original
Title of the publication container
Solar Energy Materials and Solar Cells
First page or article number
121
Last page
129
Volume
194
Fields of Science and Technology (FOS)
materials-engineering - Materials engineering
Publication language (ISO code)
eng - English
Alternative identifier (URI)
http://www.scopus.com/inward/record.url?eid=2-s2.0-85061596804&partnerID=MN8TOARS
Rights type:
Only metadata available
Financing entity
Seventh Framework Programme
Identifier for the funding entity: UID/EMS/50022/2019