Comparison of LED and HPS Luminaries in Terms of Energy Savings at Tunnel Illumination

Abstract

Energy demand is increasing day by day be cause of the step up of population, rising living standards, rising energy prices, global warming and climate change, developments in industry and tech nology in developing countries. In order to meet this increasing energy demand, it is not possible to increase production only due to limited energy resources. Therefore existing energy sources need to be used in the most efficient way. One of the most important means of reaching this target is the effi cient use of energy and its saving. Tunnel illumina tion is one of the areas of efficient and saving use of energy. In this study, high pressure sodium (HPS) and light emitting diode (LED) luminaires usage are compared to Buzlup?nar tunnel, which is a short tunnel in Bitlis province. It has also been found that illumination with LED luminaires is more efficient and economical in tunnel illumination instead of HPS.