Warm or Cold, Lights influence on thermal comfort

Project Details


Various indicators point out that a connection exists between the ambient temperature and the correlated color temperature that users prefer for the lit environment. In warm climate the use of cooler lighting is much more common than in a colder climate where people use much warmer light sources. Presumably the use of different colored light sources is due to the experience of cooler climate at cooler light sources and the impression of warmth follows a warmer looking light source. With new LED technology the correlated color temperature (warm white to cool white) is easily controllable.
The goal of the project is to demonstrate how controllable LED lighting can be used to expand the temperature interval that users find comfortable. The project is founded on previous research on colored light. It will lead to a decrease in the energy consumption of buildings.
Effective start/end date01/03/201631/12/2018

Research Output

Can We Cheat The Brain And Save Energy?

Toftum, J., Thorseth, A., Logadóttir, Á., Markvart, J. & Stoffer, S., 2018

Research output: Other contributionNet publication - Internet publicationResearchpeer-review

Open Access

Occupant response to controllable LED lighting

Toftum, J., Thorseth, A., Markvart, J. & Logadóttir, Á., 2018. 2 p.

Research output: Contribution to conferencePaperResearchpeer-review

Open Access

Occupant response to different correlated colour temperatures of white LED lighting

Toftum, J., Thorseth, A., Markvart, J. & Logadóttir, Á., 1 Oct 2018, In : Building and Environment. 143, p. 258-268

Research output: Contribution to journalJournal articleResearchpeer-review


  • 1 Participating in or organising a conference
  • 1 Participating in or organising workshops, courses, seminars etc.
  • 1 Peer review of manuscripts
  • 1 Membership of commitees, commissions, boards, councils, associations, organisations, or similar

CIE Expert Tutorial and Workshop on Research Methods for Human Factors in Lighting

Anders Thorseth (Participant)

13 Aug 201814 Aug 2018

Activity: Attending an eventParticipating in or organising a conference

Building and Environment (Journal)

Anders Thorseth (Reviewer)

25 Sep 2018 → …

Activity: Editorial work and peer reviewPeer review of manuscriptsResearch

LED possibilities and challenges

Anders Thorseth (Lecturer)

2 Jan 2017

Activity: Talks and presentationsConference presentations

Press / Media

Koldt LED-lys truer nordisk hygge

Anders Thorseth & Carsten Dam-Hansen


1 Media contribution

Press/Media: Press / Media