This aim of this study is to evaluate the simulation procedure proposedby NBR 15575-1 (ABNT, 2013a) to assess the thermal performance of dwellings. A single family dwelling considering the climates of Florianópolis, Curitiba and São Luís was adopted. A computer simulation was performed using the EnergyPlus programme. The investigation analysedthe influence of the building ground slab contact conditions on the thermal performance results for both summer and winter, as the NBR 15575-1 (ABNT, 2013a) does not specify this parameter. In addition, the influence of the parameters shading and air exchange was observed, based on a simplified procedure from NBR 15575-1 (ABNT, 2013a). Finally, a proposal for a new simulation procedure to evaluate the thermal performance of residential buildings was assessed, comparing its results with those of the current procedures ofNBR 15575-1 (ABNT, 2013a). The comparison of results indicatedthat the conditions of the ground slab contact conditions selected to simulate the thermal performance of the building strongly influenced the constructive system analysis. The comparison between the two procedures showed a difference in the performance results of the dwelling, considering the same building component.
NBR 15575; Computational simulation; Thermal performance; Residential buildings
