Daylight is a fundamental element to obtain built environments that promote environmental comfort and energy efficiency. However, strategies that enhance the building daylight performance can affect its thermal energetic performance. In this sense, research that addresses these aspects at the same time is considered essential. The objective of this paper was to evaluate the daylighting and thermal-energetic performance of administrative environments in a public institution, and to propose strategies that will enhance the use of daylight and lower energy consumption. Therefore, for future projects, and considering new buildings, and retrofit, this research will be an important reference. The research was developed through a case study of an administrative building model, in which the characteristics of solar orientation, light shelf use, glass type, and light and dark colors in walls were modified and combined, deriving it into models proposed. The daylighting performance evaluations were performed through dynamic simulation with the Rhinoceros for Diva software, and the thermal-energetic performance evaluations with the EnergyPlus software. The results of the work showed that a suitable solar orientation has a great impact on the automation of daylight and the energy consumption of the evaluated models, followed by the type of glass and the use of the light colors in internal walls, and that the use of artificial lighting with dimerization is fundamental as a complement to the daylight autonomy. For the boundary conditions of the study, the use of light shelves modified neither the daylight performance nor the thermal-energetic performance of the evaluated models.
Dado o crescente interesse em soluções construtivas mais sustentáveis, as oportunidades de reciclagem de componentes vêm ganhando cada vez mais espaço em construções no Brasil. Assim, diversos estudos vêm sendo realizados no sentido de investigar as potencialidades de adaptação dos containers navais para diferentes usos na construção civil, incluindo o uso residencial. Este artigo apresenta um estudo paramétrico de dois projetos de container adaptados à moradia unifamiliar: um originalmente proposto e outro modificado, visando aumentar seu desempenho termoenergético pela qualificação do envelope construtivo. O projeto está localizado na cidade de Porto Alegre - RS (Zona Bioclimática 03). Para a modelagem e apuração do consumo energético do edifício foram adotados os programas SketchUp e EnergyPlus, com o plugin Legacy OpenStudio. Os resultados permitiram confirmar a importância das estratégias projetuais (decisões arquitetônicas) para o aumento do conforto interno aliado à redução de consumo energético. Este trabalho busca contribuir para a avaliação de soluções mais sustentáveis em edificações, em especial aquelas que se utilizam de estratégias passivas para o incremento no desempenho termoenergético.
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