A Study on Sustainable Building Design by the Psychological Impact of LED Lighting

Ayumu Nozawa; Kenta Fukagawa; Yoshihito Kurazumi; Iori Uehara

doi:10.4028/p-9bXBtG

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 159A Study on Sustainable Building Design by the...

A Study on Sustainable Building Design by the Psychological Impact of LED Lighting

Abstract:

The majority of energy consumption in buildings is attributed to air conditioning and lighting systems. To address environmental concerns and reduce energy consumption, minimizing the energy usage associated with these systems is imperative. This study investigates the impact of LED lighting's illuminance and correlated color temperature changes on psychological evaluations in indoor settings. The research aims to contribute to sustainable building design by enhancing energy efficiency through lighting design. Furthermore, it aims to validate the Kruithof curve in LED lighting. The experiment, conducted in the summer of 2023, involved 17 female students experiencing various lighting conditions in a controlled environment. Illuminance levels ranged from 100 to 3000 lx, and color temperatures ranged from 2800 to 5200 K. Using a 7-point impression evaluation (SD method) with 20 pairs of adjectives, three factors ("Comfort," "Cleanliness," "Dynamism") were identified to explain variations in evaluations. A strong positive correlation was found between "Comfort" and color temperature. Comparison with Kruithof's experiment revealed different trends, with "Comfort" scores being positive at specific color temperatures above a certain illuminance level.

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Periodical:

Advances in Science and Technology (Volume 159)

Pages:

73-82

DOI:

https://doi.org/10.4028/p-9bXBtG

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Online since:

January 2025

Authors:

Ayumu Nozawa*, Kenta Fukagawa, Yoshihito Kurazumi, Iori Uehara

Keywords:

Color Temperature, Illuminance, Impression Evaluation, Kruithof Curve, LED Lighting

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* - Corresponding Author

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