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Estudo comparativo de sistemas de iluminação artificial com diferentes luminárias considerando a disponibilidade de luz natural

  • Moraes, Letícia Niero
Publication Date
Jan 01, 2012
Repositório Institucional da UFSC
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The use of daylight is indicated as a primary factor in energy savings of buildings, since it can reduce the use of electric lighting through control systems. However, the efficiency of systems is also associated with technical characteristics and performance of various elements of the artificial lighting systems. This paper seeks to investigate the impact of design criteria and lighting systems with different fixtures considering the availability of daylight. The methodology is based on evaluating the performance of light, such as distribution of illuminance and estimated energy consumption of artificial lighting systems through computer simulation. Are estimated daylight availability for two models of open plan office, located in Florianópolis / SC. Analyses of daylight are used to measure the energy consumption for different proposals for lighting systems, by dividing the drive circuits. The systems are differentiated by photometry and disposal of the luminaires. For each case, artificial lighting system reformulations are made in order to verify the influence of criteria such as spacing, orientation and distribution of lighting fixtures in behavior, as well as in energy consumption. It was concluded that the evaluation based on only one parameter is not allowed the definition of design quality. The results show that each proposed system has significant differences in the distribution of illumination, as well as in power consumption of the installation. The consideration of daylight does not influence significantly in relation to the analysis of lighting quality, but the analysis of consumption it is clear that this is directly related to the geometry of the environment, reaching up to 46% savings. A major contribution of this study is to obtain criteria that lead to a better design of the artificial lighting system.

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