Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating
Abstract Electrochromic smart windows can actively modulate their reversible transition between transparent and opaque states, adapting to varying climatic conditions and thereby offering a sustainable solution for energy‐efficient buildings. However, the operational range of current electrochromic...
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| Format: | Article |
| Language: | English |
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Wiley
2025-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202504483 |
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| author | Xinyu Zhao Qixiang Chen Fan Fan Qiliang Wang Yuehong Su Minsu Liu Fahua Zhu Dongliang Zhao |
| author_facet | Xinyu Zhao Qixiang Chen Fan Fan Qiliang Wang Yuehong Su Minsu Liu Fahua Zhu Dongliang Zhao |
| author_sort | Xinyu Zhao |
| collection | DOAJ |
| description | Abstract Electrochromic smart windows can actively modulate their reversible transition between transparent and opaque states, adapting to varying climatic conditions and thereby offering a sustainable solution for energy‐efficient buildings. However, the operational range of current electrochromic smart windows is mostly limited to the solar spectrum. Expanding this range into the mid‐infrared spectrum could significantly enhance their energy‐saving capabilities. In this study, a dynamic electrochromic (EC) glass that integrates silver electrodeposition/dissolution with mechanical flipping of the glass panel is designed. This design enables bidirectional dynamic modulation of both the solar spectrum (0.3–2.5 µm) and mid‐infrared spectrum (2.5–20 µm), with solar reflectance varying between 87.9% and 19.9%, and mid‐infrared emissivity varying between 90.6% and 10.8%. Consequently, the EC glass can dynamically switch between radiative cooling and solar heating modes. The simulation results show that the architectural application of this EC glass, with climate‐specific operating modes, can achieve a maximum of over 50% annual heating, ventilation, and air conditioning (HVAC) energy savings, contributing to carbon neutrality and sustainable development. |
| format | Article |
| id | doaj-art-8408b1030a9748cd80daea8d021560e6 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-8408b1030a9748cd80daea8d021560e62025-08-20T11:56:10ZengWileyAdvanced Science2198-38442025-08-011230n/an/a10.1002/advs.202504483Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar HeatingXinyu Zhao0Qixiang Chen1Fan Fan2Qiliang Wang3Yuehong Su4Minsu Liu5Fahua Zhu6Dongliang Zhao7School of Energy and Environment Southeast University Nanjing Jiangsu 210096 ChinaSchool of Energy and Environment Southeast University Nanjing Jiangsu 210096 ChinaSchool of Energy and Environment Southeast University Nanjing Jiangsu 210096 ChinaDepartment of Architecture and Built Environment University of Nottingham Nottingham NG7 2RD UKDepartment of Architecture and Built Environment University of Nottingham Nottingham NG7 2RD UKARC Research Hub for Smart Process Design and Control Department of Chemical Engineering Monash University Melbourne VIC 3800 AustraliaState Key Laboratory of Low‐carbon Smart Coal‐fired Power Generation and Ultra‐clean Emission China Energy Science and Technology Research Institute Co., Ltd. Nanjing 210023 ChinaSchool of Energy and Environment Southeast University Nanjing Jiangsu 210096 ChinaAbstract Electrochromic smart windows can actively modulate their reversible transition between transparent and opaque states, adapting to varying climatic conditions and thereby offering a sustainable solution for energy‐efficient buildings. However, the operational range of current electrochromic smart windows is mostly limited to the solar spectrum. Expanding this range into the mid‐infrared spectrum could significantly enhance their energy‐saving capabilities. In this study, a dynamic electrochromic (EC) glass that integrates silver electrodeposition/dissolution with mechanical flipping of the glass panel is designed. This design enables bidirectional dynamic modulation of both the solar spectrum (0.3–2.5 µm) and mid‐infrared spectrum (2.5–20 µm), with solar reflectance varying between 87.9% and 19.9%, and mid‐infrared emissivity varying between 90.6% and 10.8%. Consequently, the EC glass can dynamically switch between radiative cooling and solar heating modes. The simulation results show that the architectural application of this EC glass, with climate‐specific operating modes, can achieve a maximum of over 50% annual heating, ventilation, and air conditioning (HVAC) energy savings, contributing to carbon neutrality and sustainable development.https://doi.org/10.1002/advs.202504483dual‐band regulationelectrochromicradiative coolingsilversolar heating |
| spellingShingle | Xinyu Zhao Qixiang Chen Fan Fan Qiliang Wang Yuehong Su Minsu Liu Fahua Zhu Dongliang Zhao Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating Advanced Science dual‐band regulation electrochromic radiative cooling silver solar heating |
| title | Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating |
| title_full | Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating |
| title_fullStr | Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating |
| title_full_unstemmed | Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating |
| title_short | Dual‐Band Electrochromic Smart Window for Dynamic Switching Between Radiative Cooling and Solar Heating |
| title_sort | dual band electrochromic smart window for dynamic switching between radiative cooling and solar heating |
| topic | dual‐band regulation electrochromic radiative cooling silver solar heating |
| url | https://doi.org/10.1002/advs.202504483 |
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