A influência do isolamento térmico em edificações de container para o conforto térmico dos usuários

Abstract

Excessive heat at the workplace can be considered as a potential enemy, as it impacts directly on the worker’s performance, causing early fatigue and further irritating the user. The average temperature in Brazil is relatively high in summer and low during winter, which leads to a state of thermal discomfort in residential and office buildings, factories, schools and other buildings, especially during the warm seasons. Thermal insulation can be achieved in many ways. By employing insulating material, it becomes possible to keep a pleasant thermal sensation inside a building, whether in warm or cold seasons. The roof of a building is responsible for drawing a large amount of sunray, which is then responsible for a great share of the heating. The employment of thermoacoustic shingles is one of the main efforts towards enabling thermal insulation of a building. It is thus relevant to study the manner in which thermal insulation influences thermal comfort of buildings and the commercial advantages of investing in this insulation system which, although may impact negatively in capital expenses, its operational costs may be lower than other forced refrigeration present in non-insulated buildings. This thesis sought to analyze the influence of the different kinds of phasechange material employed in metal roofing exerts on the thermal performance, especially the thermal comfort of users. Data related to the thermal comfort for six models of covers in an environment of the container type, were collected throughout the months of July 2022 to June 2023.The data was then submitted to statistical analysis through descriptive statistics, normality tests and analysis of variance. The results indicate that the shingles composed of a combination of polystyrene (EPS) and the addition of an aluminum cover displayed as an excellent thermal insulating material, as well as the combination of metallic shingle and polyurethane and the addition of an aluminum cover. The metallic shingle combined with polyurethane presented a considerable insulating capacity. It can also be considered as a feasible alternative for metallic covers.