Aplicação do regulamento para etiquetagem do nível de eficiência energética em edificação unifamiliar padrão normal na zona bioclimática 2 brasileira

Abstract

This work evaluates the level of energy efficiency standard pattern, located in the brazilian bioclimatic zone 2, through the application of Quality Technical Regulation for Energy Level of Residential Buildings ( RTQ -R ) Efficiency detached buildings, having as a basis for the study city of Santiago-RS. To define the pattern of residences were adopted conceptions of NBR 12721 (ABNT, 2006), which deals with the evaluation of construction costs for real estate development , together with research and analysis project in the city of Santiago-RS. Thus, we assessed the level of energy efficiency of buildings analyzed using prescriptive methods and simulation RTQ-R being used for simulations and computational program DesignBuilder. We defined four buildings objects of study, two elongated rectangular shape with areas of 99,88m² and 142,05m², and two compact rectangular shape of 100,00m² and 168,65m². The name used for this study was based on the shape of the floor plan of the residences. The residences of elongated rectangular presented Level B and compact rectangular Level C in the envelope energy efficiency. Similarities were found in the results obtained by the two methods, especially in energy consumption for heating, presenting Levels A and B, since the degree-hour cooling was variable between levels B and C. It was observed that the buildings have discomfort during the summer. We also evaluated the influence of the thermal properties considered as prerequisites of opaque vertical locks, for it was chosen one of the residences to make alterations to the values of thermal transmittance, absorptance and solar thermal capacity. Starting from the actual data of the external walls of the building, stipulated the values to be simulated, totaling 18 simulations for determining the number of cooling degree-hours and energy consumption for heating and cooling. Thus, there was consistency in the limits of the prerequisites of the RTQ-R, however, it was observed that with low solar absorptance, increased thermal transmittance slightly affected the results, indicating greater consistency in the adoption of prerequisites that involving the thermal characteristics of the closures.