Eficiência energética em iluminação: estudo de caso na empresa de trens urbanos de Porto Alegre

Abstract

This study conducts a survey of the demand and consumption of electricity on building maintenance of Empresa de Trens Urbanos de Porto Alegre, identifying the impact of the consumption of artificial lighting and proposing new technologies with the use of natural light, in order to act on reduced costs of operation and maintenance and performance improvement through the use of electricity rationally and efficiently. The proposed methodology is a survey by measurements of energy consumption for lighting and illuminance measurements in different environments. The method aims to analyze the current system and propose a replacement in cases of inefficient technologies, lighting systems, suggesting the model and its constituent elements. Considerations for use of natural light and calculating the economic viability by the method net present value of the proposed system also shown. The results indicate that natural lighting is essential to supplement artificial lighting currently operating. The electricity consumption for lighting purposes on building studied represents approximately 6% of all maintenance area, this consists over 15 buildings. The proposal for an LED lighting system showed that the initial investment has return after five years with a significant reduction in consumption compared to the current.