Sample calculations for the composition of energy performance scales in road lighting reparation

Abstract

At the present, it is in the interest of the majority of most developed countries to reduce the power consumption. Great emphasis is placed on the use of efficient electrical equipment. The European Union started the implementation of the political and economic actions, leading to reduce the use of inefficient products and replacing them with more efficient. Lighting is one of the areas which consumes a lot of energy, but also offers a high potential for savings. Therefore, product- and system-oriented limitations are implemented through European directives into national legislation of the European countries aimed to gradually reduce the use of inefficient products. One of such system tool is the energy performance of buildings introduced several years ago, and now it is time to establish the platform for benchmarking the public lighting systems. In the new draft the standard prEN 13201-5 introduces the compound numerical indicators PDI and AECI. Examples of calculation of the PDI and AECI are in annexes of the draft standard, indicating the typical values for different road profiles, taking into consideration different lighting classes of roads and usage of different technologies available for the public lighting. This paper deals with the extension of the set of calculations and combinations for which the typical parameter values PDI and AECI are calculated. The main condition for creation of the scales of energy classes it is to have sufficiently large representative sample of model calculations. The main aim of the paper is to propose a scales of energy classes, which will serve as a global comparative model similar to the energy performance of buildings.