Journals Proceedings

Abstract

Using LED luminaires instead of luminaires with conventional lamps may lead better energy savings and energy efficiency. In order to decide to choose more efficient road lighting system a comparison between conventional lighting luminaires and LED based luminaires should be examined. In this study, the luminaires with high pressure sodium (HPS) lamp which is the most widely used technologies in road lighting and less frequently used luminaires with metal halide (MH) lamps analyzed and compared with LED luminaires. The photometric data of the three different luminaries were investigated by using Goniophotometer and Integrating Sphere in the laboratory. After that, the obtained data applied to a sample road model in Dialux software program. Lighting designs using different types of lighting luminaires are created by taking minimum criteria of CIE standards for M2 lighting class into consideration. This study shows that 36.6% energy saving can be achieved in case of using new LED technology instead of the currently used HPS technology. Also payback period is estimated as 13 years with energy prices of Turkey. In case of using luminaires with MH lamps are going to be 51.1% energy saving and 9.3 years payback period respectively