Desafios na aplicação da sustentabilidade nas compras públicas: retrofit do sistema de iluminação em instituição de ensino superior

Abstract

Sustainability is a growing demand in the consumption of products and in the operation of buildings andmust be prioritized in the retrofitof lighting systems. However, when it comes to efficient lighting systems, the comparison between different LED luminaires is complex and there are many challenges found in public procurement, which requirea publiccompetition between suppliers. The objective of the present investigationwas to understand how to replace different lighting technologies in a sustainable way, through public bidding, having the classrooms of the CAD 3 building of UFMG as object of study. The methodology involved the study of the existing legislation for bidding in public constructionand the application in the case study. For this, it wasmade selection of suppliers of LED luminaires, sizing ofparts through the lumen method andcomputer simulation to meet the NBR ISO/CIE 8995:2013, analysis of the energy efficiency of the project according to the INI-C and verification of the overall cost. It was understood that LED luminaires have several different characteristics from each other to different suppliers, which requires the design of a project for each supplier. The study concluded that the replacement of light sources requires a holistic analysis and that the bidding should be made based on the most efficient lighting design, and not only by the analysis of the luminaire.