基于有孔的二氧化薄膜的Fabry-Perot空腔系统用于辐射冷却调节热色窗户:实验和模拟研究
Saranya Bhupathi1,2, Shancheng Wang3, Guanya Wang3
1School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore.
Nanophotonics (Berlin, Germany)
|December 5, 2024
概括
本研究探讨了用于动态热管理的智能窗户中的多孔二氧化 (VO2) 薄膜. 优化的多孔VO2膜增强了红外辐射对比度,从而提高了建筑节能效果.
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:
- 智能窗户提供动态的热管理,以提高能源效率.
- 二氧化 (VO2) 是智能窗户的一个有希望的材料,因为它具有可调节的光学特性.
- 多层系统中微观结构对VO2发射率的影响需要进一步研究.
研究的目的:
- 为了研究VO2/ZnSe/ITO/玻璃织物-佩罗 (F-P) 腔的热色和发射性能.
- 分析VO2薄膜多孔度对排放性调节的影响.
- 优化基于VO2的智能窗户系统,以提高能源节约.
主要方法:
- 使用喷雾和热蒸发制造VO2/ZnSe/ITO/玻璃FP腔薄膜.
- 对VO2薄膜多孔性的操纵.
- 热色和辐射性能的表征.
- 有限差异时间域 (FDTD) 模拟以了解光学属性.
主要成果:
- 优化的多孔VO2膜实现了高长波红外 (LWIR) 发射率对比度 (ΔɛLWIR ≥0.4).
- 保持了高可见透明度 (Tlum) ≈41%.
- 观察到低温LWIR发射率降低 (0.1-0.2),有利于在气候变暖占主导地位的地区节省能源.
结论:
- 操纵VO2微结构,特别是孔隙性,对于智能窗户中有效的排放性调节至关重要.
- 基于VO2的多孔FP空洞为开发节能智能窗户技术提供了可行的途径.
- 开发的智能窗户系统展示了通过动态热管理显著节省建筑能源的潜力.
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