IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i10p2499-d1654364.html
   My bibliography  Save this article

The Influence of Electrochromic Film on Indoor Environmental Quality

Author

Listed:
  • Kuan-Ting Yeh

    (Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan)

  • Wei-Chieh Hu

    (Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, Taiwan)

  • Chun-Kuei Chen

    (Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, Taiwan)

  • Ta-Hui Lin

    (Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
    Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, Taiwan)

  • Feng-Yi Lin

    (Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, Taiwan)

  • Chung-Chih Cheng

    (Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, Taiwan)

  • Tzu-Ching Su

    (Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, Taiwan)

  • Pei-Yu Yu

    (Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, Taiwan)

Abstract

This study was conducted at SPINLab. The full-scale experiments were performed using two experimental spaces of identical specifications to investigate the effects of electrochromic film (OG + EC ON or OG + EC OFF ) on indoor environment and air conditioning electricity consumption in buildings with different orientations (East and West). The electricity-saving effects are more pronounced on the building’s west-facing side than on its east-facing side. For the east-facing side, the average electricity savings for OG + EC ON and OG + EC OFF were 4.5%, and 5.1%, respectively. For the west-facing side, the average electricity savings increased to 9.2% and 9.4% for OG + EC ON and OG + EC OFF . The research results on thermal comfort indicate (PMV) that applying electrochromic film (OG + EC ON or OG + EC OFF ) significantly improved indoor thermal comfort compared to using clear glass (OG) alone. The visual comfort analysis results indicate that the opaque (OG + EC OFF ) and transparent (OG + EC ON ) states of electrochromic film could reduce daylight glare probability (DGP) values. However, due to the light-scattering properties of the liquid crystal droplets, the OG + EC OFF and OG + EC ON states of the electrochromic film increased DGP values in 26.5% and 41.5% of the cases, respectively, when sunlight directly entered the interior.

Suggested Citation

  • Kuan-Ting Yeh & Wei-Chieh Hu & Chun-Kuei Chen & Ta-Hui Lin & Feng-Yi Lin & Chung-Chih Cheng & Tzu-Ching Su & Pei-Yu Yu, 2025. "The Influence of Electrochromic Film on Indoor Environmental Quality," Energies, MDPI, vol. 18(10), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:10:p:2499-:d:1654364
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/10/2499/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/10/2499/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:18:y:2025:i:10:p:2499-:d:1654364. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.