Desenvolvimento de planilha de cálculo para auxílio no processo de escolha de soluções construtivas para edificações quanto ao desempenho térmico

Abstract

The construction business is one of the most important sectors in the economy of countries and, at the same time, one of the most harmful to the environment. In Brazil, building construction is one of the largest consumers of electricity, which contributes significantly to the worsening of climate effects caused by greenhouse gas emissions into the atmosphere. Therefore, the construction market has increasingly sought to develop sustainable construction techniques and strategies. The present work seeks to contribute to this pursuit, with the development of a spreadsheet that aims to assist engineers and architects in choosing suitable materials that meets the requirements of the ABNT NBR 15220 standard - regarding the thermal performance of buildings. Based on the worksheet, analyses and simulations were made for many different types of typical market roof and wall materials, such as masonry walls made of ceramic blocks and solid concrete and roof composed of solid, pre-molded, and ribbed slabs. Besides that, the types of external and internal coatings on the walls were also varied, as well as their thickness. For the roofs, the types of roofs that compose them varied as well. The simulation results point to the full functioning and agility of the spreadsheet in verifying compliance with the limits of thermal transmittance and thermal capacity of the building envelope for the Brazilian bioclimatic zones.