Eficiência energética no sistema de iluminação do prédio da Faculdade de Engenharia - UFGD: estudo de caso considerando a iluminação natural

Abstract

The sustainable management of the energy sector is a crucial challenge in contemporary society, given the growing demand for electricity. In this context, the use of natural lighting emerges as an alternative to mitigate this problem. The main objective of this study was to evaluate the electrical consumption in a building installation, with emphasis on the optimization of lighting through natural light, focusing specifically on the Engineering Faculty block of the Federal University of Grande Dourados. Initially, an analysis of the Percentage of Use of Natural Light was carried out, which allowed to determine a reduction of 48.6% in annual consumption, or the equivalent of 7,530.6 kWh. To take advantage of natural light, a system was developed using the Arduino platform, using the laboratories of the FAEN/UFGD block as a base. The last stage of the research consisted of evaluating the economic feasibility of implementing the system developed in the five laboratories on the south façade of the block. The implementation cost was estimated at US$ 3,297.60 for the Arduino system and US$ 4,163.00 for the commercial system. Based on the reduction in consumption, a Net Present Value (NPV) of US$ 3,246.00 and R$ 2,380.60 is expected, and a payback period of 6 years and 8 years for the automation systems presented, respectively. Thus, both systems are economically viable for the implementation and use of natural light.