End-use analysis on domestic lighting

Casper Kofod, Energy piano, DK

Keywords

domestic lighting, end-use analysis, monitoring, compact fluorescent lamp, DSM-programmes, barriers, dedicated luminaires, design competition, lighting pattern

Abstract

The use of compact fluorescent lamps (CFLs) leads to sizeable reductions in energy consumption. Most existing and coming countries in the European Community are or have been promoting the use of CFLs. Although good results have been achieved, the potential for savings in the EU is evaluated to be at least four times the realised!

Marked studies have been executed in order to find the worst barriers and how to convince customers of the benefits of using CFLs in stead of incandescent lamps. In Denmark, these studies are recently supplied by mapping which lighting sources are actually installed in 100 Danish homes. By recording the energy consumption every 10 minutes for 20 lamps as well as the total lighting consumption, the use of the single lighting source in each of the 100 homes can be analysed. This is resulting in a huge amount of end-use lighting data.

A detailed energy analysis is presented, including electricity consumption divided into incandescent lamps, halogens, linear fluorescent lamps, and CFLs, use of lighting sources divided into wattages as well as per type of room in the home. These results are related to marked research results from a resent SAVE dissemination study as well as results from the large Danish CFL campaigns performed during the last two winters. The potential for more energy efficient lighting will be evaluated, taking into account the already established use of energy efficient lighting.

Finally, short-term avenues for increased use of CFLs will be summarised. This is followed by long-term avenues, including use of dedicated fixtures/luminaries where interaction between the bulb and fixture/luminaries will result in better quality in light distribution. Relations to the actual European Lighting Design Competition “Light of the Future” are drawn.