论文标题
浓缩辐射冷却
Concentrated Radiative Cooling
论文作者
论文摘要
当前辐射冷却系统的基本限制是，只有面向深空的顶表面才能提供辐射冷却效果，而底部表面不能提供辐射冷却效果。在这里，我们通过将辐射冷却系统嵌套在中志上的反射槽中嵌套，并在实验中展示了“浓缩辐射冷却”的概念，以使下表面不会在以前的系统中有助于辐射冷却，可以通过反射式散发热量到深空。现场实验表明，辐射冷却管的温度下降是独立辐射冷却管的两倍以上。此外，通过将集中的辐射冷却系统作为空调系统中的预处理组合，我们预测凤凰城，亚利桑那州的$> 75 \％$ $> 75 \％$，在北卡罗来纳州Reno中的$> 80 \％$ $> 80 \％$ $，用于单层商业建筑。
A fundamental limit of current radiative cooling systems is that only the top surface facing deep-space can provide the radiative cooling effect, while the bottom surface cannot. Here, we propose and experimentally demonstrate a concept of "concentrated radiative cooling" by nesting a radiative cooling system in a mid-infrared reflective trough, so that the lower surface, which does not contribute to radiative cooling in previous systems, can radiate heat to deep-space via the reflective trough. Field experiments show that the temperature drop of a radiative cooling pipe with the trough is more than double that of the standalone radiative cooling pipe. Furthermore, by integrating the concentrated radiative cooling system as a preconditioner in an air conditioning system, we predict electricity savings of $>75\%$ in Phoenix, AZ, and $>80\%$ in Reno, NV, for a single-story commercial building.
