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Tintas seletivas para aplicação em sistemas de energia solar térmica
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Advisor(s)
Abstract(s)
RESUMO: As tintas espectralmente seletivas são atualmente uma potencial alternativa a outros revestimentos seletivos, como os obtidos por métodos de deposição a vácuo, para sistemas de energia solar térmica, tendo como benefícios a utilização de técnicas de aplicação e manutenção mais simples, disponibilidade comercial a mais baixo custo e elevada durabilidade. Existem apenas algumas tintas comerciais capazes de produzir revestimentos com elevado desempenho ótico e simultaneamente elevada estabilidade térmica, para algumas aplicações. Estas tintas são referidas como seletivas sensíveis ou insensíveis à espessura (TSSS e TISS). Este trabalho apresenta estas tintas seletivas, com referência aos constituintes que têm merecido maior atenção, a relação entre eles e as características óticas dos revestimentos e desempenho obtido nos diversos estudos efetuados, tanto em termos de eficiência das propriedades óticas, como de durabilidade de materiais. Pretende-se ainda dar uma visão atual da possibilidade de aplicação das tintas seletivas em sistemas de energia solar térmica a baixas-médias e altas temperaturas.
ABSTRACT: Spectrally selective paints are currently a potential alternative to other solar selective coatings, such as those obtained by vacuum deposition methods, for solar thermal energy systems, with the benefits of simpler application and maintenance techniques, commercial availability at lower cost and high durability. There are only a few commercial paints capable of producing coatings with high optical performance and simultaneously high thermal stability, for some applications. These paints are referred to as thickness spectrally selective sensitive or insensitive (TSSS and TISS). This work presents these selective paints, with reference to the constituents that have deserved greater attention, the relationship between them and the optical characteristics of the coatings and performance obtained in the various studies carried out, both in terms of the efficiency of the optical properties and the durability of materials. It is also intended to present a current view of the possibility of applying selective paints in solar thermal energy systems at low-medium and high temperatures.
ABSTRACT: Spectrally selective paints are currently a potential alternative to other solar selective coatings, such as those obtained by vacuum deposition methods, for solar thermal energy systems, with the benefits of simpler application and maintenance techniques, commercial availability at lower cost and high durability. There are only a few commercial paints capable of producing coatings with high optical performance and simultaneously high thermal stability, for some applications. These paints are referred to as thickness spectrally selective sensitive or insensitive (TSSS and TISS). This work presents these selective paints, with reference to the constituents that have deserved greater attention, the relationship between them and the optical characteristics of the coatings and performance obtained in the various studies carried out, both in terms of the efficiency of the optical properties and the durability of materials. It is also intended to present a current view of the possibility of applying selective paints in solar thermal energy systems at low-medium and high temperatures.
Description
CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar
Keywords
Solar energy Selective solar paints
Citation
Alves. I.N... [et.al.] - Tintas seletivas para aplicação em sistemas de energia solar térmica. In: CIES2020: As Energias Renováveis na Transição Energética: Livro de Comunicações do XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar. Helder Gonçalves, Manuel Romero (Ed.). Lisboa, Portugal: LNEG, 3-5 Novembro, 2020, p. 365-373
Publisher
LNEG - Laboratório Nacional de Energia e Geologia