We demonstrate a simple, low-cost design of a selectively emissive radiative cooler using scotch tape and aluminum foil, which can be further augmented by higher quality metal deposition methods. This do-it-yourself radiative cooler achieves solar reflectance, long wavelength infrared emittance, and optical selectivity comparable to state-of-the art designs and is experimentally demonstrated as achieving a 7°C subambient temperature drop at night for the aluminized scotch tape and an average 2°C drop under a solar illumination of 965 W / m2 for the silvered scotch tape. In addition, an 11°C subambient temperature drop at night for the aluminized scotch tape was obtained when a convection shield was used. Detailed optical properties are presented for an ultrawide wavelength range and a ∼2π angle of emittance. Given its ease of fabrication and performance, we propose this set of materials as a control for future radiative cooling experiments and an effective radiative cooling accessory for passive cooling designs.

中文翻译：

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自己动手做的辐射冷却器作为设备设计的辐射冷却标准和冷却组件

我们展示了使用透明胶带和铝箔的选择性发射辐射冷却器的简单、低成本设计，可以通过更高质量的金属沉积方法进一步增强。这种自己动手做的辐射冷却器实现了与最先进的设计相媲美的太阳能反射率、长波长红外发射率和光学选择性，并通过实验证明在夜间使镀铝透明胶带和镀银透明胶带在 965 W/m2 的太阳光照射下平均下降 2°C。此外，当使用对流屏蔽时，镀铝透明胶带在夜间低于环境温度下降了 11°C。提供了超宽波长范围和~2π 发射角的详细光学特性。