IMPACT OF THE ADOPTION OF BIOCLIMATIC STRATEGIES IN THE ENERGY EFFICIENCY OF CONDITIONED RESIDENTIAL BUILDINGS IN RIO DE JANEIRO CITY
Residential building; Energy Efficiency; Energy retrofit; Bioclimatic passive strategies.
The energy consumption by the world built park corresponds to almost 50% of all the energy demanded. In Brazil, this value exceeds the world average. Half of this demand is consumed by residential buildings. Likewise, a forecast of an increase in electricity demand and supply for the coming years as well as the continuous growth of the national housing deficit are expected. In addition to this, the growth of the energy consumption produced by air conditioning devices to amend the increased discomfort caused by climate change and heat island phenomena is also observed. In view of this, the present research objective was to identify and analyze constructive strategies applied to existing residential buildings, which can improve their energy efficiency considering the room air conditioning systems. For this purpose, computer simulation was carried out to ascertain the energy performance considering a housing complex located in the city of Rio de Janeiro, in Brazil. Thereafter, the results of passive strategies adoption related to the bioclimatic architecture in those buildings were evaluated, in a complementary character. As a result, it was identified that the combination of shading strategies and shutter as well as lighten the facade color was the solution that showed the greatest reduction in the room operative temperature of the buildings, reaching reductions of up to 2,94°C.The reduction in operating temperature is directly linked to the reduction of thermal discomfort experienced by building users and the need for air conditioning in the environments. Thus, the use of bioclimatic strategies can reduce the use of air conditioners and the consequent energy consumption. This research contributed to identify strategies that can be applied in MCMV buildings and reduce the environmental impact of these constructions.