Street lighting LED luminaires replacing high pressure sodium lamps: Study of case

This paper deals with the study of the pilot project of street lighting using LED luminaires on the campus of Federal University of Juiz de Fora. Over twenty nine months the system was monitored in order to evaluate the performance of this technology that is gaining ground in the lighting industry. Photometric and electrical results obtained during this period will be presented as well as a comparison with the old lighting system that employs high-pressure sodium lamps based on classical photometry and mesopic photometry, which takes into account the dynamic visual response of the human eye. In addition, will be done a simplified economic analysis aiming to show the saving generated by the new lighting system and a calculation of payback of the new luminaires.