Artigo De: 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
Informações chave
Autores:
Publicado em
1 de junho de 2019
Resumo
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.
Detalhes da publicação
Autores da comunidade :
Fernando de Almeida Costa Oliveira
ist126733
Luís Manuel Guerra da Silva Rosa
ist11630
Versão da publicação
AO - Versão original do autor
Título do contentor da publicação
Solar Energy Materials and Solar Cells
Primeira página ou número de artigo
121
Última página
129
Volume
194
Domínio Científico (FOS)
materials-engineering - Engenharia dos Materiais
Idioma da publicação (código ISO)
eng - Inglês
Identificador alternativo (URI)
http://www.scopus.com/inward/record.url?eid=2-s2.0-85061596804&partnerID=MN8TOARS
Acesso à publicação:
Acesso apenas a metadados
Entidade financiadora da bolsa/projeto
Seventh Framework Programme
Identificador da Entidade Financiadora: UID/EMS/50022/2019