Three‐State Thermochromic Smart Window for Building Energy‐Saving
Abstract Smart windows that dynamically regulate solar spectrum transmission to reduce energy consumption in heating, ventilation, and air conditioning systems are highly desirable. However, the limited amplitude of the regulation and narrow wavelength control often degrade the modulation performanc...
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| Format: | Article |
| Language: | English |
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Wiley
2025-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202416688 |
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| author | Meiling Liu Xiansheng Li Wenshuo Zhang Lanxin Li Liang Li Chengming Wang Gang Pei Bin Zhao Chongwen Zou |
| author_facet | Meiling Liu Xiansheng Li Wenshuo Zhang Lanxin Li Liang Li Chengming Wang Gang Pei Bin Zhao Chongwen Zou |
| author_sort | Meiling Liu |
| collection | DOAJ |
| description | Abstract Smart windows that dynamically regulate solar spectrum transmission to reduce energy consumption in heating, ventilation, and air conditioning systems are highly desirable. However, the limited amplitude of the regulation and narrow wavelength control often degrade the modulation performance of existing smart windows. To improve solar modulation and thermal management, here we propose a three‐state thermochromic smart window (TSSW) capable of modulation across the entire solar spectrum. The TSSW is mainly based on the unique phase transition properties of tungsten‐doped vanadium dioxide (W‐VO₂) and perovskite films, which can stepwise control the visible light and near‐infrared (NIR) transmittance separately, leading to the adaptive transitions between cold, warm, and hot states. Results indicate that the TSSW achieves a solar modulation rate of 23.5%, with indoor solar irradiance decreasing from 413.6 W/m2 in the cold state to 374.5 W/m2 in the warm state, and down to 189.1 W/m2 in the hot state. The simulation results show that the annual total energy demand can be reduced by up to 102.09 WJ/m2 in some typical regions. Compared to Low‐E glass and ordinary glass, this TSSW offers superior energy‐saving potential, making it an ideal solution for reducing building energy consumption. |
| format | Article |
| id | doaj-art-a1f00ba5ba704e42b6fa856be100656e |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-a1f00ba5ba704e42b6fa856be100656e2025-08-20T03:25:17ZengWileyAdvanced Science2198-38442025-05-011218n/an/a10.1002/advs.202416688Three‐State Thermochromic Smart Window for Building Energy‐SavingMeiling Liu0Xiansheng Li1Wenshuo Zhang2Lanxin Li3Liang Li4Chengming Wang5Gang Pei6Bin Zhao7Chongwen Zou8National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology University of Science and Technology of China Hefei Anhui 230029 P. R. ChinaDepartment of Thermal Science and Energy Engineering University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaDepartment of Thermal Science and Energy Engineering University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaDepartment of Thermal Science and Energy Engineering University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaNational Synchrotron Radiation Laboratory, School of Nuclear Science and Technology University of Science and Technology of China Hefei Anhui 230029 P. R. ChinaInstruments' Center for Physical Science, Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaDepartment of Thermal Science and Energy Engineering University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaDepartment of Thermal Science and Energy Engineering University of Science and Technology of China Hefei Anhui 230027 P. R. ChinaNational Synchrotron Radiation Laboratory, School of Nuclear Science and Technology University of Science and Technology of China Hefei Anhui 230029 P. R. ChinaAbstract Smart windows that dynamically regulate solar spectrum transmission to reduce energy consumption in heating, ventilation, and air conditioning systems are highly desirable. However, the limited amplitude of the regulation and narrow wavelength control often degrade the modulation performance of existing smart windows. To improve solar modulation and thermal management, here we propose a three‐state thermochromic smart window (TSSW) capable of modulation across the entire solar spectrum. The TSSW is mainly based on the unique phase transition properties of tungsten‐doped vanadium dioxide (W‐VO₂) and perovskite films, which can stepwise control the visible light and near‐infrared (NIR) transmittance separately, leading to the adaptive transitions between cold, warm, and hot states. Results indicate that the TSSW achieves a solar modulation rate of 23.5%, with indoor solar irradiance decreasing from 413.6 W/m2 in the cold state to 374.5 W/m2 in the warm state, and down to 189.1 W/m2 in the hot state. The simulation results show that the annual total energy demand can be reduced by up to 102.09 WJ/m2 in some typical regions. Compared to Low‐E glass and ordinary glass, this TSSW offers superior energy‐saving potential, making it an ideal solution for reducing building energy consumption.https://doi.org/10.1002/advs.202416688energy‐savingsmart windowthermochromicthree‐state |
| spellingShingle | Meiling Liu Xiansheng Li Wenshuo Zhang Lanxin Li Liang Li Chengming Wang Gang Pei Bin Zhao Chongwen Zou Three‐State Thermochromic Smart Window for Building Energy‐Saving Advanced Science energy‐saving smart window thermochromic three‐state |
| title | Three‐State Thermochromic Smart Window for Building Energy‐Saving |
| title_full | Three‐State Thermochromic Smart Window for Building Energy‐Saving |
| title_fullStr | Three‐State Thermochromic Smart Window for Building Energy‐Saving |
| title_full_unstemmed | Three‐State Thermochromic Smart Window for Building Energy‐Saving |
| title_short | Three‐State Thermochromic Smart Window for Building Energy‐Saving |
| title_sort | three state thermochromic smart window for building energy saving |
| topic | energy‐saving smart window thermochromic three‐state |
| url | https://doi.org/10.1002/advs.202416688 |
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