LATITUDE E CONDIÇÕES CLIMÁTICAS LOCAIS - VERIFICAÇÃO DA PREDOMINÂNCIA NO DESEMPENHO DA LUZ NATURAL E NO CONSUMO ENERGÉTICO DE ILUMINAÇÃO

Abstract

This work aimed at verifying if the impact of the direct solar radiation incidence angle, due to the latitude, could predominate to the local climatic conditions in lighting energy consumption, with daylight harvesting. The lighting energy consumption, a pre-existing Brazilian luminous zoning and latitude were correlated. Then, the impact of latitude and orientation on incident global radiation was analyzed. Finally, the effects of the direct solar radiation incidence angle on the building daylight performance were evaluated. Lighting consumption and global radiation were simulated with annual climate-based modeling. The effects of the direct solar radiation incidence angle used the static simulation, generating illuminance maps. The simulations results evaluation used graphical and statistical analysis. As a result, the zoning was not representative of the lighting energy consumption variations. It was observed that the impact of latitude on global radiation changes the consumption pattern for each orientation. It has been confirmed that, due to the direct solar radiation incidence angle, buildings located in areas with less daylight availability may present more daylight in deeper areas of inner space at certain dates. As a general conclusion, it can be affirmed that the variation of direct solar radiation incidence angle, resulting from the orientation and the latitude effects due to the solar geometry, can stand out to the conditions of daylight availability of the locality.