Scalable Photochromic Film for Solar Heat and Daylight Management
© 2023 Wiley-VCH GmbH..
The adaptive control of sunlight through photochromic smart windows could have a huge impact on the energy efficiency and daylight comfort in buildings. However, the fabrication of inorganic nanoparticle and polymer composite photochromic films with a high contrast ratio and high transparency/low haze remains a challenge. Here, a solution method is presented for the in situ growth of copper-doped tungsten trioxide nanoparticles in polymethyl methacrylate, which allows a low-cost preparation of photochromic films with a high luminous transparency (luminous transmittance Tlum = 91%) and scalability (30 × 350 cm2 ). High modulation of visible light (ΔTlum = 73%) and solar heat (modulation of solar transmittance ΔTsol = 73%, modulation of solar heat gain coefficient ΔSHGC = 0.5) of the film improves the indoor daylight comfort and energy efficiency. Simulation results show that low-e windows with the photochromic film applied can greatly enhance the energy efficiency and daylight comfort. This photochromic film presents an attractive strategy for achieving more energy-efficient buildings and carbon neutrality to combat global climate change.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:36 |
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| Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 36(2024), 5 vom: 01. Feb., Seite e2304910 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Meng, Weihao [VerfasserIn] |
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| Links: |
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| Themen: |
Daylight comfort |
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| Anmerkungen: |
Date Revised 01.02.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/adma.202304910 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a The adaptive control of sunlight through photochromic smart windows could have a huge impact on the energy efficiency and daylight comfort in buildings. However, the fabrication of inorganic nanoparticle and polymer composite photochromic films with a high contrast ratio and high transparency/low haze remains a challenge. Here, a solution method is presented for the in situ growth of copper-doped tungsten trioxide nanoparticles in polymethyl methacrylate, which allows a low-cost preparation of photochromic films with a high luminous transparency (luminous transmittance Tlum = 91%) and scalability (30 × 350 cm2 ). High modulation of visible light (ΔTlum = 73%) and solar heat (modulation of solar transmittance ΔTsol = 73%, modulation of solar heat gain coefficient ΔSHGC = 0.5) of the film improves the indoor daylight comfort and energy efficiency. Simulation results show that low-e windows with the photochromic film applied can greatly enhance the energy efficiency and daylight comfort. This photochromic film presents an attractive strategy for achieving more energy-efficient buildings and carbon neutrality to combat global climate change | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a energy saving | |
| 650 | 4 | |a photochromicity | |
| 650 | 4 | |a scalability | |
| 650 | 4 | |a smart windows | |
| 650 | 4 | |a transparency | |
| 650 | 4 | |a tungsten trioxide | |
| 700 | 1 | |a Kragt, Augustinus J J |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Yingtao |e verfasserin |4 aut | |
| 700 | 1 | |a Brembilla, Eleonora |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Xiaowen |e verfasserin |4 aut | |
| 700 | 1 | |a van der Burgt, Julia S |e verfasserin |4 aut | |
| 700 | 1 | |a Schenning, Albertus P H J |e verfasserin |4 aut | |
| 700 | 1 | |a Klein, Tillmann |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Guofu |e verfasserin |4 aut | |
| 700 | 1 | |a van den Ham, Eric R |e verfasserin |4 aut | |
| 700 | 1 | |a Tan, Longfei |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Laifeng |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Jingxia |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Lei |e verfasserin |4 aut | |
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