Abstract
To achieve a significant national reduction of greenhouse gas emissions in the construction sector, the Romanian government has aligned national policies with European regulations on the energy efficiency of buildings. For that, when constructing new buildings or renovating existing ones, the criteria associated with the concept of nearly zero-energy building (nZEB) are respected. Achieving this objective involves knowing the tools for evaluating the energy performance of the building envelope, considering the important weight it plays in the total energy consumption for normal use. The purpose of this paper is to highlight the possibilities of designers and energy auditors for buildings to evaluate, with a satisfactory degree of accuracy, the energy performance (EP) of curtain wall facades using the calculation methods proposed in SR EN ISO 12631:2018. A study on the influence of some representative parameters on thermal transmittance, carried out on a generic curtain-type facade element, supports those involved in the process of optimizing the solutions for new buildings or the renovation of existing ones.