ANÁLISE COMPARATIVA DE MEDIÇÕES DE NÍVEIS DE ILUMINÂNCIA IN LOCO E POR SIMULAÇÃO (PLUG-IN DIVA/RHINOCEROS)

Abstract

Natural lighting as a source of indoor lighting provides a great potential for reducing energy consumption. Among the tools, in loco measurements and computational simulation are the most used. However, it is important to check the compatibility of the results for these two methods in order to ensure that the simulation, generally used in the design phase, will represent the actual behavior of the environment. The objective of this work was to compare simulations of illuminance levels with the measured levels in loco, in a classroom of the Federal University of Santa Maria - Rio Grande do Sul (latitude 29º68' and longitude 53º81'). The measurements were realized in loco on March 28, 2019 at 10 a.m., under clear sky conditions and with the aid of a luminance meter. For the computational simulations, was used the DIVA plug-in in the Rhinoceros 5 program, with the use of the SWERA format climate file. The results indicated an average of 47% of differences in values between the measurements (simulated and measured). It is concluded that the difference between the measured and simulated values can occur due to various factors, ranging from differences between modelling and real environment characteristics to differences with climate file. As future steps, is intended to analyze other days of the year and increase the measurement times.