• O. M. Beketov National University of Urban Economy in Kharkiv


This report examined an energy consumption of lighting system with different light sources.

Actual ways optimizing the energy consumption of lighting systems for education facilities with high levels of ambient normalized horizontal illuminance on the audit results have been highlighted.

Efficient using electricity and decreasing the cost of the lighting needs can be achieved by such arrangements: improving the lighting systems; applying efficient light sources, correct selection and placement of fixtures and rational application of new lighting fixtures and devices, optimizing lighting networks and control systems, the rational organization of lighting operation.

The investigation was made in Dialux Evo program, which gave an opportunity to calculate a Lighting Energy Numeric Calculator (LENI). The standard EN 15193 is part of a set of standards developed to support the implementation of EPBD directives.

The EN 15193 provides a simplified method for the estimation of the energy consumption for lighting through the index LENI.  The  calculation  method  introduced  in  the  original  standard  (2007)  has  been  revised  in  2017,  especially  on  the approach to calculate the daylighting contribution.

Optimization the lighting systems is justifying the choice of means and methods of lighting. One of the important issues determining the efficiency of indoor lighting is the choice of lighting systems. In this frame, this paper critically analyses the characteristics of the new simplified method to estimate the efficiency of lighting system.

The paper contains information about the methodology of calculation energy consumption indicators. Having been shown how to calculate the LENI, the paper highlights how influencing factors are considered, and which are the main differences with respect to other calculation approaches.

 In addition, lighting system with different types of lighting system with different types of lighting sources were analyzed.

The simulation results have been shown that using daylight and artificial lighting can realized high energy efficiency of the lighting system with the corrective approach. Implementation of energy-efficient lighting arrangements can significantly reduced energy consumption, thereby decreasing greenhouse gas emissions.

It is clear from the comparative calculations that light-emitting diode had shown themselves better, then compact fluorescent lamps in energy saving sense. LED energy efficiency grew from 30 to 50% against compact fluorescent lamps.

The other major factor that helps increase energy efficiency is automatic controller, as detectors and sensors.

The analyze of detectors and sensors influence on energy consumption are equally interesting.

 Keywords: light audit, lighting systems, modeling lighting, natural lighting, artificial lighting, combined lighting

Author Biography

, O. M. Beketov National University of Urban Economy in Kharkiv

кандидат технічних наук, доцент



How to Cite

Ю. О. (2018). ENERGY EFFICIENCY OF LIGHTING SYSTEM ANALYSIS IN DIALUX EVO ACCORDING EN 15193: Array. Municipal Economy of Cities, 7(146), 110–115. Retrieved from