AVALIAÇÃO DE TELHADOS CERÂMICOS DE ALTA REFLETÂNCIA SOLAR ATRAVÉS DE SIMULAÇÃO TERMOENERGÉTICA E ANÁLISE ECONÔMICA EM UMA RESIDÊNCIA UNIFAMILIAR
DOI:
https://doi.org/10.46421/entac.v18i.735Keywords:
Cool roof, Solar reflectance, Thermal emission, Economic analysisAbstract
One of the passive strategies to reduce the cooling load on buildings is the use of roofs with high solar reflectance. In addition, the use of these roofs has the potential to mitigate the Heat Island phenomenon. This study aims to analyze the thermoenergetic performance and economic viability of applying a high solar reflectance roof to a single family building, located in the city of Rio de Janeiro. The ceramic tile was selected because it is one of the most common types in the country. In this work the ceramic tile was analyzed in the color natural and white. The measurement of solar reflectance and thermal emission was performed for the two colors of the tile, as well as the calculation of the Solar Reflectance Index (SRI). Thermoenergetic analysis was performed using the EnergyPlus software. The economic analysis was carried out using the financial indicators: Net Present Value, Internal Rate of Return and payback. The ceramic roof with high solar reflectance reduces by up to 55% the heat gain through the building's roof and the economic analysis proved to be viable with a payback of less than 13 years.
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