辐射冷却
材料科学
电介质
吸收(声学)
光学
辐射传输
热透过率
光电子学
超材料
热的
热辐射
热导率
热阻
发射率
辐射
复合材料
热力学
物理
作者
Dong Wang,Yeqing Zhu,Cheng Fang,Peng He,Yong‐Hong Ye
出处
期刊:Applied Optics
[The Optical Society]
日期:2019-09-03
卷期号:58 (26): 7035-7035
被引量:5
摘要
This paper introduces radiative cooling metamaterial use in engineering thermal radiation based on metal-multi-dielectric-metal (MMDM) structure. The measured average absorption of the MMDM from 15° to 75° in the "atmosphere window" is 0.81, and the absorption range of the structure hardly changes with the incident angles. Without considering solar radiation, at the thermal conductivity of 6.9 W·m-2·K-1, the surface temperature is 10.8°C lower than the ambient temperature (300 K), and the cooling power is 102 W·m-2. Importantly, when the surface temperature is higher than the ambient temperature, this radiative cooler can lower the surface temperature in engineering thermal radiation with a higher thermal conductivity at the same cooling power.
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