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Strategies on Visual Display Terminal Lighting in Office Space under Energy-Saving Environment

Author

Listed:
  • Yusen Lin

    (Department of Architecture, National United University, Miaoli 360301, Taiwan)

  • Cheng-Chen Chen

    (Department of Architecture, National Taipei University of Technology, Taipei 106344, Taiwan)

  • Yasser Ashraf Gandomi

    (Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02142, USA)

Abstract

In this work, we have studied how the vertical illuminance of the human eye position, illuminance of the horizontal work surface, and the brightness of the computer screen in the office space lighting are correlated under an energy-saving environment. This investigation was conducted in a full-scale laboratory that simulates an office space with 20 adults. It was found that when the indoor ambient lighting illuminance changes, the vertical illuminance of the subject’s eye position is affected accordingly, and the two factors are strongly correlated. On the other hand, when the surrounding environment is brighter and the vertical illuminance increases, the illuminance of the horizontal working surface adjusted by the subject during the visual display terminal (VDT) operation is significantly reduced. The horizontal illuminance value can even be lower than the value frequently employed in various countries around the world, since the computer screen brightness will be adjusted accordingly. Therefore, in an energy-saving environment, the illuminance of the horizontal working surface and the brightness of the computer screen adjusted by the users will vary with the ambient lighting. Especially in the current mainstream VDT operating environment and within a certain range of conditions, the interior setting can be lower than the current horizontal illuminance benchmark for additional energy conservation.

Suggested Citation

  • Yusen Lin & Cheng-Chen Chen & Yasser Ashraf Gandomi, 2023. "Strategies on Visual Display Terminal Lighting in Office Space under Energy-Saving Environment," Energies, MDPI, vol. 16(3), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1317-:d:1047633
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    References listed on IDEAS

    as
    1. Jaeyoung Heo & Miki Kozaki & Takaaki Koga & Kotaroh Hirate & Hyun Bae Kim, 2022. "Investigation of the Visual Environment of Railway Station Stairs Using Qualitative and Quantitative Evaluation Methods," Energies, MDPI, vol. 15(19), pages 1-19, September.
    2. Paul Mathew & Cindy Regnier & Jordan Shackelford & Travis Walter, 2020. "Energy Efficiency Package for Tenant Fit-Out: Laboratory Testing and Validation of Energy Savings and Indoor Environmental Quality," Energies, MDPI, vol. 13(20), pages 1-22, October.
    3. Ruijun Chen & Meng-Chun Tsai & Yaw-Shyan Tsay, 2022. "Effect of Color Temperature and Illuminance on Psychology, Physiology, and Productivity: An Experimental Study," Energies, MDPI, vol. 15(12), pages 1-23, June.
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