UMA NOVA ABORDAGEM PARA A ANÁLISE DO POTENCIAL LUMINOSO DE ELEMENTOS DE CONTROLE DA INSOLAÇÃO POR REDIRECIONAMENTO DA RADIAÇÃO

Abstract

To achieve a balance between the thermal and luminous performance, the solar control device needs to reduce the solar heat gain, intercepting the direct solar radiation, and redirecting some of this solar radiation to illuminate the interior space. The analysis tools available do not offer suitable parameters to deconstruct the physical phenomenon occurring on the device’s surface, which is capable of modifying the incident direction of solar radiation enough to contribute to the luminous performance. In light of this, the following research present a method for analyzing the luminous potential of solar control devices by radiation redirection, capable of spatially and numerically representing their potential to intercept and redirect the solar radiation. Therefore, two new metrics have been proposed: Weighted Radiosity Coefficient (WRC) and Luminous Redirection Potential (LRP). The results indicate that, depending on the geometric configuration, the solar control devices are able to block a similar percentage of the solar radiation, however, they may present different use of the incident light on its surface to illuminate the work plane. The presented method contributed to a new approach for analyzing the luminous potential of solar control devices by radiation redirection and proved applicability for flat and curved surface geometries.