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A field study of fluorescent and LED classroom lighting

Gentile, N. LU ; Goven, Tommy; Laike, Thorbjörn LU and Sjoberg, Klas LU (2018) In Lighting Research and Technology 50(4). p.631-653
Abstract

Indoor lighting is facing a massive retrofit to LED lighting. Research is needed to assess whether LED-based lighting can promote energy efficiency, boost visual comfort and support biological functions. This field study considered the lighting of four identical classrooms in an upper secondary school in Helsingborg, Sweden. Two classrooms were fitted with state-of-the-art ceiling pendants containing T5 fluorescent tubes and that had a direct/indirect light distribution (the control rooms). The other two classrooms were fitted with an experimental LED indirect lighting system (the experimental rooms). In the classrooms, 72 students aged 17–18 years performed their usual educational activities over a whole academic year. The light... (More)

Indoor lighting is facing a massive retrofit to LED lighting. Research is needed to assess whether LED-based lighting can promote energy efficiency, boost visual comfort and support biological functions. This field study considered the lighting of four identical classrooms in an upper secondary school in Helsingborg, Sweden. Two classrooms were fitted with state-of-the-art ceiling pendants containing T5 fluorescent tubes and that had a direct/indirect light distribution (the control rooms). The other two classrooms were fitted with an experimental LED indirect lighting system (the experimental rooms). In the classrooms, 72 students aged 17–18 years performed their usual educational activities over a whole academic year. The light environment, electricity consumption, and students’ mood, light perception and saliva cortisol concentration were monitored. The two lighting systems produced only marginal differences. Overall, the experimental rooms were slightly preferred but achieved only small energy savings due to high parasitic losses.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
subjective lighting comfort, perceived lighting, solid state lighting, LED, ambient lighting, circadian rhythm, Lighting efficiency, parasitic losses
in
Lighting Research and Technology
volume
50
issue
4
pages
23 pages
publisher
SAGE Publications Inc.
external identifiers
  • scopus:85042430153
ISSN
1477-1535
DOI
10.1177/1477153516675911
language
English
LU publication?
yes
id
fd01d0d0-0b80-4c8c-b2fc-69767b55c86c
date added to LUP
2016-10-12 15:57:26
date last changed
2019-04-23 03:45:51
@article{fd01d0d0-0b80-4c8c-b2fc-69767b55c86c,
  abstract     = {<p>Indoor lighting is facing a massive retrofit to LED lighting. Research is needed to assess whether LED-based lighting can promote energy efficiency, boost visual comfort and support biological functions. This field study considered the lighting of four identical classrooms in an upper secondary school in Helsingborg, Sweden. Two classrooms were fitted with state-of-the-art ceiling pendants containing T5 fluorescent tubes and that had a direct/indirect light distribution (the control rooms). The other two classrooms were fitted with an experimental LED indirect lighting system (the experimental rooms). In the classrooms, 72 students aged 17–18 years performed their usual educational activities over a whole academic year. The light environment, electricity consumption, and students’ mood, light perception and saliva cortisol concentration were monitored. The two lighting systems produced only marginal differences. Overall, the experimental rooms were slightly preferred but achieved only small energy savings due to high parasitic losses.</p>},
  author       = {Gentile, N. and Goven, Tommy and Laike, Thorbjörn and Sjoberg, Klas},
  issn         = {1477-1535},
  keyword      = {subjective lighting comfort,perceived lighting,solid state lighting,LED,ambient lighting,circadian rhythm,Lighting efficiency,parasitic losses},
  language     = {eng},
  month        = {06},
  number       = {4},
  pages        = {631--653},
  publisher    = {SAGE Publications Inc.},
  series       = {Lighting Research and Technology},
  title        = {A field study of fluorescent and LED classroom lighting},
  url          = {http://dx.doi.org/10.1177/1477153516675911},
  volume       = {50},
  year         = {2018},
}