Solar Absorptance
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Thermal characterization of soil-cement bricks using mining tailings
Abstract Soil-cement bricks are earth construction materials that have been gaining prominence due to their environmental advantages. The Brazilian Technical Standard NBR 8491 establishes physical and mechanical procedures to characterize these bricks. However, the thermal characterization is an important assessment, since it is related to the building’s t
REM - International Engineering Journal. Publicado em: 2022
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2. Theoretical Approach to Simulate Efficient Selective Solar Absorbers With Micro or Nano Structured Arrays
Study of the solar absorber with photonic crystal or micro structures as the heat absorbing surfaces operated at a high-temperature was conducted. Numerical calculations based on rigorous coupled-wave analysis were performed to determine the absorptance of the photonic crystal surface on the absorber. The effect of nano geometry of the photonic crystal in tu
Mat. Res.. Publicado em: 22/03/2018
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3. Selective Surfaces of Black Chromium for Use in Solar Absorbers
One of the applications of selective surfaces is to improve performance of solar absorbers. The purpose of this work is to produces selective coatings with high absorption of solar radiation in the range of UV/Vis/NIR. It was prepared a selective surface composed of black chromium (Cr/Cr2O3) deposited on substrates of AISI 304 stainless steel using the techn
Mat. Res.. Publicado em: 09/11/2017
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4. Produção de Superfícies Seletivas de Ni/NiO para Aplicações em Coletores Solares / Produção de Superfícies Seletivas de Ni/NiO para Aplicações em Coletores Solares
Novas tecnologias e novos materiais vêm sendo desenvolvidos a fim de tornar a tecnologia solar economicamente mais atrativa. Materiais como o níquel (Ni) e o óxido de níquel (NiO) depositados sobre alumínio têm-se destacado em várias aplicações fototérmicas atuando como superfícies seletivas para a faixa do espectro solar. As superfícies seletiva
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2011
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5. Absortancia solar de superficies opacas : metodos de determminação e base de dados para tintas latex acrilica e PVA / Solar absorptance of opaque surfaces : a determination methods and data base for latex acrylic and PVA coatings
Solar radiation is the main responsible factor for the thermal load of buildings, and its impact over this load depends, mainly, on the solar absorptance of the building envelope. The lack of reliable and current data implies that researchers and specialists use visual perception or adopt tables based on surface colors to quantify the solar absorptance, whic
Publicado em: 2008