TY - JOUR
TI - A method to estimate savings of led lighting instalation in public buildings: The case study of secondary schools in Serbia
AU - Josijević Mladen M
AU - Gordić Dušan R
AU - Milovanović Dobrica M
AU - Jurišević Nebojša M
AU - Rakić Nikola Ž
JN - Thermal Science
PY - 2017
VL - 21
IS - 6
SP - 2931
EP - 2943
PT - Article
AB - This paper examines the potentials of saving electric energy in school lighting by replacing the existent systems of lighting with more adequate ones which are based on light-emitting diode technology. Our primary goal is to present the methodology used in this analysis since it can be used to determine potential savings in lighting systems of any public building. We have performed the detailed analysis of nine high schools located in Kragujevac, Serbia. The first step was to collect the data about the numbers and types of systems utilized, as well as about the habits of their users. This has revealed the share of electricity consumption for lighting in total electricity consumption. The replacements for each existent light source have been proposed taking into consideration the projected value of light flux depending on the purpose of each room. The calculations of potential savings through the replacement of lighting systems have been conducted taking into consideration not only the savings in electric energy but also the savings made through the maintenance cost reduction. Based on the results, the potential savings range from 53-62% while the payback period for the analysed schools is about four years in average. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 42013: Research of cogeneration potential of municipal and industrial energy power plant in Republic of Serbia and opportunities for rehabilitation of existing and construction of new cogeneration plants]