实现高性能日间辐射制冷的超宽带光子结构
Ultrabroadband Photonic Structures To Achieve High-Performance Daytime Radiative Cooling
中文简介
从热平衡方程出发,提出同时满足太阳光谱高反射与大气窗口高发射的二维周期与多层光子结构设计,理论净制冷功率可达约 100 W/m²;系统分析对流、导热等非辐射换热对制冷量的影响,为日间辐射制冷的材料与结构设计建立理论框架。
英文摘要(原文)
If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure capable of radiative cooling in daytime outdoor conditions. The structure behaves as a broadband mirror for solar light, while simultaneously emitting strongly in the mid-IR within the atmospheric transparency window, achieving a net cooling power in excess of 100 W/m(2) at ambient temperature. This cooling persists in the presence of significant convective/conductive heat exchange and nonideal atmospheric conditions.
题录(GB/T 7714)
Rephaeli E, Raman A P, Fan S. Ultrabroadband Photonic Structures To Achieve High-Performance Daytime Radiative Cooling[J]. Nano Letters, 2013, 13(4): 1457-1461. DOI: 10.1021/nl4004283.