Influência da cor da tinta na temperatura interna de edifícios de alvenaria de tijolos: um estudo de caso

Abstract

In recent years, Brazil has been suffering from the scarcity of rain, and the increase in energy tariffs due to the water crisis. The air conditioning of environments corresponds to one of the items with the highest energy consumption in buildings, and in this work we analyze a possible way to save energy through a more thermally efficient construction. This work presents the masonry construction of a prototype with 1mx1mx0.9m and the analysis of the internal and external temperature to verify whether the color of the paint applied to the external wall influences the internal temperature or not. The prototype was painted in 3 different colors, they are white, green and black. Matt acrylic paint from the Grafittex brand was used, for each color, data were collected every 30 minutes each day, for 5 days, so that later the collected data could serve as a basis to determine if it is possible to reduce the internal temperature in tropical regions through from using lighter colors or increasing the internal temperature in cold regions through darker colors on the external walls.