Overview
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHOR
-
Christophe MARVILLET: Professor at the Conservatoire national des Arts et Métiers, member of the LAFSET laboratory (CNAM, Paris), president of Greth (Research Group on Heat Exchangers)
INTRODUCTION
The annual time spent by people in offices is 1,650 hours; a significant proportion of this time requires the use of lighting. In addition, lighting in common areas is used for between 1,600 and 1,700 hours. Office spaces alone in France comprise 53,500 light fixtures (115,500 lamps and 85,500 ballasts) out of a total of 82,400 light fixtures (170,000 lamps and 122,500 ballasts) for all uses, representing a density of 0.2 light fixtures per square meter. Only 6% of these luminaires have been renovated.
The average energy flow in office premises is estimated at 15.7 W/m 2 , whereas with recent technologies, the accessible flow, with the same visual comfort, is 7 W/m 2 .
It is therefore essential to reduce the energy consumption associated with lighting. This fact sheet will help you maintain or even improve the required levels of visual comfort as defined by the AFNOR NF X35-103 standard "Ergonomic principles applicable to workplace lighting" and implement more energy-efficient lighting technologies.
The Ultimate Scientific and Technical Reference
EDITIONS
Other editions of this article are available:
This article is included in
Energy resources and storage
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Ensuring the relamping of an industrial building
Define the characteristic values of lamps
Regulations
-
Articles R. 4213-1 to R. 4213-4
Articles R. 4223-4 to R. 4223-11
Normative references
NF EN 12464-1/2 Light and lighting – Lighting of workplaces – Part 1: Indoor workplaces – Part 2: Outdoor workplaces.
NF EN 15 193 Energy performance of buildings – Energy requirements for lighting.
The Ultimate Scientific and Technical Reference
