一个双频智能窗口,具有可见光和近红外光调制的电热控制
Fuman Jing1, Zuowei Zhang1, Luoning Zhang1
1Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
Small (Weinheim an der Bergstrasse, Germany)
|August 19, 2025
概括
这项研究介绍了一种新的复合智能窗膜,可以通过电气控制可见光和近红外光进行热控制. 这种双重功能薄膜实现了显著的太阳能调制,并展示了有效的辐射冷却性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 能源科学 能源科学
背景情况:
- 聚合物分散液晶 (PDLC) 薄膜为智能窗户提供了电光特性,但缺乏近红外 (NIR) 调制,用于全面的太阳能管理.
- 现有的智能窗户技术往往无法解决可见光和NIR频谱的完整热控制.
研究的目的:
- 设计和演示具有双电热控制的复合膜,用于先进的太阳能管理和辐射冷却.
- 整合PDLC用于可见光调制和二氧化 (W/VO2) 用于NIR调制和热控制.
主要方法:
- 复合膜的制造,将PDLC作为电色层和W/VO2涂层作为热色层.
- 电光和热色特性的表征,包括太阳能调制,可见透射率和辐射冷却性能.
- 利用MATLAB模拟来预测白天和夜间的冷却功率.
主要成果:
- 复合膜实现了13.90%的太阳能调制和54.77%的可见透射率.
- 在太阳能模拟下,与空白玻璃相比,显著降低了12.5°C的温度.
- 在户外测试中,在环境温度以下达到2.3°C的次环境冷却,模拟的冷却功率为59.55 W m−2 (白天) 和109.01 W m−2 (夜晚).
结论:
- 开发的复合膜有效调节可见光电和NIR光热,为智能窗户提供了有前途的解决方案.
- 该膜在大气窗口中呈现出高辐射率,有助于显著的辐射冷却性能.
- 这种双重控制的智能窗户技术为节能建筑和气候控制推进了光和热管理.
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