Improved Public Lighting at the University of São Paulo - Brazil

Abstract

The University of São Paulo (USP) transitioned the roadway lighting technology at the University called Armando de Salles Oliveira (USP-CUASO campus) from High-Pressure Sodium Vapor Lamps (HPSVL) and Metal Halide Lamps (MHL) to the Solid-State Lighting (SSL). So, this paper presents and discusses the outcomes of the lighting installations and the depreciation of light output from luminaires installed at the Institute of Energy and Environment (IEE) at USP using field data collected over two years (2018–2023). The analysis incorporates aspects related to corrective maintenance, predominantly performed last year, necessitated by the end of the useful life of components such as electronic drivers (66%), 50 W LEDi modules (17%) and others (17%). The failure rate of the sampled luminaires in the IEE area increased from 10% to 28% between August 2021 and January 2023.