Hygrothermal performance of masonry walls of residential buildings in a humid subtropical climate

• Autor(a) principal: Buligon, Liliane Bonadiman
• Data de Publicação: 2022
• Outros Autores: Macarthy, Maritza da Rocha, Bernardes, Luiza Coutinho, Leitzke, Rodrigo Karini, Grigoletti , Giane de Campos, Cunha, Eduardo Grala da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: PARC (Campinas)
• Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8667258
• topic: Umidade; Simulação computacional; Isolamento térmico; Umidade em paredes; Moisture; Computer simulation; Thermal insulation; Wall moisture

The lack of humidity control in buildings can affect the durability of materials, thermal comfort, energy consumption and indoor air quality, as well as promoting the growth of microorganisms (filamentous fungi) that are harmful to the user's health. In this context, the aim of this study is to analyze the hygrothermal behavior of four configurations of external vertical sealing systems (SVVE) of ceramic bricks with different levels of thermal insulation and water tightness for the humid subtropical climate. For this, the EVS typology was defined. Then, the building simulations were carried out, considering two conditions: naturally ventilated and artificially conditioned. Two computer simulation programs were used: EnergyPlus (version 8.7) and WUFI Pro 6.5. And finally, the results were evaluated regarding the total moisture content, risk of condensation and the risk of forming filamentous fungi. The results show that the walls that meet the requirements of NBR 15575 were not guaranteed to minimize the humidity on the internal surface, not even for environments with artificial air conditioning. As for the formation of filamentous fungi, it was only possible to avoid the problems in environments with controlled temperature, except in the ceramic brick wall, which presented risk in all simulated conditions.