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Energy efficiency in buildings is related to the bioclimatic architecture, which is the adequacy of the building to the local climate. This study aimed to analyze the influence of certain architectural and construction characteristics on the electricity consumption in buildings located at Mossoró, RN, whose climate is tropical semi-arid. We recorded data of thermal and geometric characteristics of the architectural elements, such as: building shape, layout and use of spaces, cardinal orientation of facades, positioning of translucent elements and thermal properties of construction systems materials. For the thermal and energy performance analysis of parameters such as thermal transmittance and absorptance of external walls and roofs, window-to-wall ratio, vertical shading angles of translucent openings and buildings cardinal orientation, the EnergyPlus program was used to simulate electricity consumption throughout the year, based on models similar to the target buildings of this study. In these buildings, due to the architectural variables tested, artificial air conditioning was the main factor responsible for the variation of annual electricity consumption, while the consumption of artificial lighting and equipment remained constant in all simulated scenarios. In addition, the bright and reflective buildings coatings, the low window-to-wall ratio and the existence of shading elements contributed to minimizing the effects of solar radiation on the buildings heating. For this diagnosis, project recommendations are proposed for a thermally efficient building’s envelope, inserted in the semi-arid tropical climate and requiring artificial air conditioning.References
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