超耐用,灵活的陶纳米纤维用于可持续的被动辐射冷却
Dai-Chi Chen1, Ching-Wen Hwang1, Ching Yin Chang1
1Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
ACS nano
|July 31, 2025
概括
一种新的超疏水纳米纤维膜提供有效的被动冷却,降低温度高达16.8°C. 这种耐用材料提高了能源效率和安全性,即使在火灾中.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 可持续能源 可持续能源
背景情况:
- 被动日间辐射冷却 (PDRC) 对于减轻全球变暖至关重要.
- 对于现实世界的PDRC应用,需要耐用和弹性材料.
- 现有的PDRC材料往往缺乏长期的稳定性和效率.
研究的目的:
- 开发一种强大的超疏水纳米纤维膜,以实现高效的被动冷却.
- 为了研究新材料的光学特性和冷却性能.
- 评估材料的耐用性,自我清洁性能和节能潜力.
主要方法:
- 通过电回旋制造二氧化-氧化 (ZrO2-Al2O3) 纳米纤维膜.
- 没有的表面修改以达到超性.
- 在太阳辐射下进行光学表征 (太阳反射率,辐射率) 和热性能测试.
主要成果:
- 超水的ZrO2-Al2O3纳米纤维 (sh-ZANF) 膜实现了97.7%的太阳反射率和95.6%的空气透明窗口发射率.
- 经过证明的6.6°C的下环境冷却,冷却功率为125W/m2.
- 建筑物,汽车和相机模型分别冷却了14.7°C,16.8°C和11.1°C.
- 通过老化测试展示了耐高温 (>1400°C),自我清洁和耐用性.
结论:
- 开发的sh-ZANF膜是一种高度有效和耐用的材料,用于被动白天辐射冷却.
- 它为建筑物节能和减少二氧化碳排放提供了显著的潜力.
- 它的弹性和安全特性使其适合于各种现实应用,包括火灾紧急情况.
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