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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/19990

Title: Neutral daylight illumination with electrochromic glazing: simulation of ‘light mixing’
Authors: Mardaljevic, John
Kelly Waskett, Ruth
Painter, Birgit
Keywords: Electrochromic glazing
Daylight
Spectrum
Issue Date: 2015
Publisher: © Commission Internationale de l'Eclairage
Citation: MARDALJEVIC, J., KELLY WASKETT, R. and PAINTER, B., 2015. Neutral daylight illumination with electrochromic glazing: simulation of ‘light mixing’. Presented at: The 28th Session of the International Commission on Illumination (CIE 2015), 28th June-4th July 2015, Manchester.
Abstract: Electrochromic glazing generally exhibits a shift in spectral transmission as the glass darkens, e.g. causing it to appear blue as it tints. Occupants however are believed to prefer a neutral spectrum of daylight illumination without any pronounced hue. In this paper the authors show that it is possible to maintain a neutral spectrum of illumination with EC glazing under normal operation provided that just a small proportion of the EC glazing is kept in the clear state. Predictions from a theoretical model are compared with measurements of the daylight spectra in an office with EC glazing under various states of tint. The predicted spectra show excellent agreement with the measurements. The theoretical model is further validated using lighting simulation to demonstrate that, under normal operation, illumination from clear and full-tint EC is well-mixed, with that from clear glazing dominating the overall illumination.
Description: This is a conference paper.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/19990
Publisher Link: http://session2015.cie.co.at/
Appears in Collections:Conference Papers (Civil and Building Engineering)

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