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“The European Daylight Standard – Status” by Marc Fontoynont

719 views · Published 16 September 2015 · 11:11 · Indexed 6 November 2026

Channel: The VELUX Group · 2015 · Science & Technology

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Lecture from the 6th VELUX Daylight Symposium “Daylight as a driver of change” that took place in London on 2-3 September 2015. For more information visit http://thedaylightsite.com

ABSTRACT

There is currently under development a European standard on daylight. The standard when complete will be part of a set of European Standards in the area of lighting application created by CEN together with EN 12464-1 – Light and Lighting, Lighting of Work Places, Indoor Work Places and EN 15193 – Energy Performance of Buildings, Energy Requirements for Lighting. The current working group developing the standard is made up of 22 experts representing 12 different national standards bodies.

The standard proposes methods to assess various aspects related to good daylighting in buildings. It contains procedures to assess quantities of daylight reaching buildings interiors, and also minimum view toward the outside.

Also methods are proposed to rate glare protection, as well as ways to provide minimum sunlight penetration in rooms ( for dwellings , and other spaces wher sunlight is important). The target being to avoid - poorly lit spaces, the standard includes also minimum recommendations with quantitative figures. For instance, it is recommended that daylit spaces should be daylit at least 50% of annual daylight hours. Distinction is made for spaces lit from facades of from roof. Minimum recommendations can be achieved with climate based daylight modelling or computation of Daylight Factors.

Marc Fontoynont is Professor at Danish Buidling Research Institute, Aalborg University in Copenhagen, Denmark. He is currently running research on perception of lighting quality, energy efficiency and models of Total Cost of Ownership of lighting systems. He has been working until 2011 at ENTPE/CNRS, Lyon France. He is involved in CIE activities, European funded research projects and programmes from the International Energy Agency. He is currently the convener of TC169/WG11 addressing daylight in buildings.

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