The Influence of Electrochromic Film on Indoor Environmental Quality
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<sub>ON</sub> or OG + EC<sub>OFF</sub>) on indoor environment and air conditionin...
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| Format: | Article |
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2025-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/10/2499 |
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| author | Kuan-Ting Yeh Wei-Chieh Hu Chun-Kuei Chen Ta-Hui Lin Feng-Yi Lin Chung-Chih Cheng Tzu-Ching Su Pei-Yu Yu |
| author_facet | Kuan-Ting Yeh Wei-Chieh Hu Chun-Kuei Chen Ta-Hui Lin Feng-Yi Lin Chung-Chih Cheng Tzu-Ching Su Pei-Yu Yu |
| author_sort | Kuan-Ting Yeh |
| collection | DOAJ |
| description | 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<sub>ON</sub> or OG + EC<sub>OFF</sub>) 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<sub>ON</sub> and OG + EC<sub>OFF</sub> 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<sub>ON</sub> and OG + EC<sub>OFF</sub>. The research results on thermal comfort indicate (PMV) that applying electrochromic film (OG + EC<sub>ON</sub> or OG + EC<sub>OFF</sub>) significantly improved indoor thermal comfort compared to using clear glass (OG) alone. The visual comfort analysis results indicate that the opaque (OG + EC<sub>OFF</sub>) and transparent (OG + EC<sub>ON</sub>) 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<sub>OFF</sub> and OG + EC<sub>ON</sub> states of the electrochromic film increased DGP values in 26.5% and 41.5% of the cases, respectively, when sunlight directly entered the interior. |
| format | Article |
| id | doaj-art-61789f7743584e6bb0e2e059286d1de4 |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-61789f7743584e6bb0e2e059286d1de42025-08-20T02:33:44ZengMDPI AGEnergies1996-10732025-05-011810249910.3390/en18102499The Influence of Electrochromic Film on Indoor Environmental QualityKuan-Ting Yeh0Wei-Chieh Hu1Chun-Kuei Chen2Ta-Hui Lin3Feng-Yi Lin4Chung-Chih Cheng5Tzu-Ching Su6Pei-Yu Yu7Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, TaiwanResearch Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, TaiwanResearch Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Mechanical Engineering, National Cheng Kung University, Tainan 70101, TaiwanGreen Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, TaiwanGreen Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, TaiwanGreen Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, TaiwanGreen Energy and Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4 Chung Hsing Rd., Chutung, Hsinchu 310401, TaiwanThis 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<sub>ON</sub> or OG + EC<sub>OFF</sub>) 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<sub>ON</sub> and OG + EC<sub>OFF</sub> 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<sub>ON</sub> and OG + EC<sub>OFF</sub>. The research results on thermal comfort indicate (PMV) that applying electrochromic film (OG + EC<sub>ON</sub> or OG + EC<sub>OFF</sub>) significantly improved indoor thermal comfort compared to using clear glass (OG) alone. The visual comfort analysis results indicate that the opaque (OG + EC<sub>OFF</sub>) and transparent (OG + EC<sub>ON</sub>) 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<sub>OFF</sub> and OG + EC<sub>ON</sub> states of the electrochromic film increased DGP values in 26.5% and 41.5% of the cases, respectively, when sunlight directly entered the interior.https://www.mdpi.com/1996-1073/18/10/2499electrochromic filmindoor comfortelectricity consumptionbuilding orientation |
| spellingShingle | Kuan-Ting Yeh Wei-Chieh Hu Chun-Kuei Chen Ta-Hui Lin Feng-Yi Lin Chung-Chih Cheng Tzu-Ching Su Pei-Yu Yu The Influence of Electrochromic Film on Indoor Environmental Quality Energies electrochromic film indoor comfort electricity consumption building orientation |
| title | The Influence of Electrochromic Film on Indoor Environmental Quality |
| title_full | The Influence of Electrochromic Film on Indoor Environmental Quality |
| title_fullStr | The Influence of Electrochromic Film on Indoor Environmental Quality |
| title_full_unstemmed | The Influence of Electrochromic Film on Indoor Environmental Quality |
| title_short | The Influence of Electrochromic Film on Indoor Environmental Quality |
| title_sort | influence of electrochromic film on indoor environmental quality |
| topic | electrochromic film indoor comfort electricity consumption building orientation |
| url | https://www.mdpi.com/1996-1073/18/10/2499 |
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