Fator Indicativo de Eficiência Energética baseado no Método dos Lumens e na Luz Natural

Abstract

The lighting in the internal spaces of the buildings is preponderant for the performance of the activities carried out and the comfort of the users. The way in which lighting is used can offer better visual performance conditions when natural light is added to artificial lighting, resulting in the efficiency of the lighting system and cost reduction in the electricity bill. In this sense, this article presents the Indicative Factor of Energy Efficient Lighting (in portuguese, “Fator Indicativo de Eficiência Energética da Luz - FIEEL), proposing to the user how he can use natural light in conjunction with artificial lighting while maintaining the level of illuminance recommended in the literature. The development of this study started with the collection of data in a classroom of a Campus Bagé of the Federal University of Pampa, observing the climatic conditions in three shifts of the day and alternating the lighting scenarios. Afterwards, a luminotechnical calculation was performed using the lumens method and modeling and simulations were performed using DIALux EVOⓇ. Based on the results, it can be analyzed when it is indicated to use natural light to replace artificial lighting or to add them. The methodological process developed and the implementation in a computational tool, bring the opportunity to improve the culture of energy efficiency, in addition to being an action in favor of the conservation of natural resources. In this way, they meet the three pillars of sustainability: the economic, the social and the environmental.