Solar reflectance and thermal performance of national cool paints for building envelope
DOI:
https://doi.org/10.46421/entac.v19i1.2090Keywords:
Tintas frias, Envelope construtivo, Refletância solar, Temperatura superficial, Desempenho térmicoAbstract
Cool materials application on envelope is a passive technique that can contributes to energy efficiency in buildings. To evaluate thermal performance of national cool paints, solar reflectance in lab and surface temperature of specimens exposed to Sun were measured. Results demonstrate significant solar reflectance difference of same color paints, but smaller variation in surface temperature among them. However, near-infrared reflection is more relevant to reduce heat absorption on surfaces, proving importance of obtaining data measured in laboratory for coatings appropriate choice in buildings.
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