A pele dos edifícios comerciais: análise de desempenho térmico dos sistemas de fachada e materiais de revestimento

Abstract

Nowadays, designers and society are worried about the performance of builfings, also reflected in the creation of many standards on the subject, helped the development of research related to specific Project situations. The thermal performance of commercial buildings, wich mostly follow na international style, with the abusive use of glass surfaces, has been criticized and verified.Large electrical charges, requested by the large amount of equipment used in the offices, create conditions of thermal discomfort in spaces, favoring the intensive use of HVAC systems. The reaserch verified the influence of façade system external cladding materials on the thermal comfort inside the builfing. 22 computer simulations were performed, using the software EcoDesigner Star, with 11 types of façades in two orientations, from a model building with 17 floors of offices, located in Enseada do Suá, Vitória, ES. The simulated models included the more traditional façade systems, identified in existing buildings in the área and other systems not yet used in the neighborhood but already available in the national market. Among the systems analyzed, there was a great increase in energy consumption with air conditioning in buildings that use glass façade. Among the systems that use conventional Windows, the ventilated façade system obtained the best result, followed by the system that uses Light Steel Frame with fiber cement panels.