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The construction industry is one of the main sources of pollution due to high energy consumption in its life cycle. Besides the energy used in the construction of the building during its operation, many systems also use, mainly, the air conditioning system. The energy consumption of the air conditioning system is related, among others things, with the outdoor air temperature and the indoor required air temperature. The façades are the elements in which the transference of heat happens from the outdoor environment to the indoor environment in high buildings. So, the façade typologies contribute to the energy consumption in the life cycle of the buildings and to CO2 emissions, because the emission of this gas is linked directly to the energy consumption. The objective of this work is to contribute to the development of evaluation methodology of CO2 emissions generated during the life cycle of the façades of office buildings. The results for the parameters considered in this work show that the façades in structural glazing with colorless glass are those that emit more CO2 throughout its life cycle, followed by the façades in masonry and coated with ACM (Aluminium Composite Material), façades in structural glazing with reflective glass and façades in masonry coated with mortar. Finally, an analysis was made to evaluate the results uncertainty.

Contribuição à metodologia de avaliação das emissões de dióxido de carbono no ciclo de vida das fachadas de edifícios de escritórios.