Analysis of the thermal performance of social housing with concrete walls in Uberlândia-MG

Abstract

The concrete wall construction system has been widely used in the construction of social housing (HIS). However, issues related to the thermal performance of this system need further study and attention. In this context, there is the evaluation of thermal performance according to ABNT NBR 15575: 2013 of a HIS built with concrete walls molded in loco in Uberlândia-MG. Initially, the simplified method for the real project was used to determine the level of thermal performance. Then, six scenarios were simulated for summer and winter, according to the most critical solar orientation. For the analyzes, the Energy Plus software was used for 8760 hours of the year. It is a comparison between the results obtained and the normative requirements that provide for the comparison of internal and external temperatures and internal temperatures with the temperatures of the typical day. As a result, HIS did not achieve the minimum levels for the simplified method. For the simulations, several comparatives analyze the increase or reduction of internal temperatures in the building's thermal zones. The real project with eaves and external painting in light color reached the minimum thermal performance level for summer and winter; however, other analyzes were incorporated, allowing important considerations. Criticism is also made on normative criteria for inconsistent thermal performance and the quality of design replicated in the city without concern for the user.