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Related Experiment Video

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Interactions between the perception of light and temperature.

Marije Te Kulve¹, Luc Schlangen², Wouter van Marken Lichtenbelt¹

¹Department of Human Biology & Movement Sciences, NUTRIM, Maastricht University, Maastricht, The Netherlands.

|August 17, 2018

Summary

Lighting conditions can influence how we perceive temperature indoors. Warmer light (5800 K) increased shivering, while improved visual comfort positively correlated with thermal comfort, suggesting lighting can mitigate discomfort.

Keywords:

ambient temperature correlated color temperature indoor environment light intensity thermal comfort visual comfort

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Area of Science:

Building Science
Environmental Psychology
Human-Building Interaction

Background:

Expanding acceptable indoor temperatures can reduce energy use and benefit health.
Thermal perception is influenced by multiple environmental factors, including light.

Purpose of the Study:

To investigate if light conditions can alter thermal perception under varying ambient temperatures.
To assess the impact of light color temperature and intensity on thermal perception.

Main Methods:

Two laboratory experiments were conducted.
Tested light color temperatures (2700 K and 5800 K) and intensities (5 and 1200 lux).
Evaluated thermal perception during cool, neutral, and warm ambient conditions.

Main Results:

Higher perceived shivering was reported under 5800 K light.
Increased ambient temperature led to a warmer perception of light color.
Perceived light intensity was closest to neutral under thermoneutral conditions.
Changes in visual comfort positively correlated with changes in thermal comfort.

Conclusions:

Thermal discomfort can be partially offset by lighting that enhances perceived visual comfort.
Lighting strategies may offer novel approaches to improve indoor environmental satisfaction in workplaces.
Further field studies are needed to validate these findings in real-world settings.