Easy Way to Achieve Self-Adaptive Cooling of Passive Radiative Materials.,ACS Applied Materials & Interfaces

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Easy Way to Achieve Self-Adaptive Cooling of Passive Radiative Materials.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-05-21 , DOI: 10.1021/acsami.0c05803
Zhilin Xia ₁ , Zhen Fang ₁ , Zhenfei Zhang ₁ , Kailiang Shi ₁ , Zhenghua Meng _{2,

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Affiliation

Passive radiative cooling includes using the atmospheric window to emit heat energy to the cold outer space and hence reduce the temperature of objects on Earth. In most cases, radiative cooling is required in summer and suppressed in winter for thermal comfort. Recent radiative cooling materials cannot self-adjust cooling capacity according to season and environment, thus limiting their applications. In this study, we have designed a temperature-controlled phase change structure (TCPCS). The TCPCS benefits radiative coolers to adjust their cooling ability according to the ambient temperature. In the outdoor test, the TCPCS can help the cooler to turn off at low temperatures and turn on at high temperatures automatically; the coolers with and without TCPCS have maximal temperature differences of 9.7 and 19.6 °C, respectively, in a whole day. Furthermore, we have further improved and designed a V-shaped TCPCS that can simultaneously achieve the dual functions of cooling in summer and heating in winter. The TCPCS assembled here is a simple, feasible, and scalable structure for self-adaptive cooling.

中文翻译：

实现无源辐射材料自适应冷却的简便方法。

被动辐射冷却包括使用大气窗口将热能散发到寒冷的外部空间，从而降低地球上物体的温度。在大多数情况下，夏季需要进行辐射冷却，而冬季则需要进行辐射冷却，以实现热舒适性。最近的辐射冷却材料无法根据季节和环境自调节冷却能力，从而限制了它们的应用。在这项研究中，我们设计了一个温度控制的相变结构（TCPCS）。TCPCS有利于辐射冷却器根据环境温度调节其冷却能力。在室外测试中，TCPCS可以帮助冷却器在低温下关闭并在高温下自动打开；带和不带TCPCS的冷却器在一整天内的最大温差分别为9.7和19.6°C。此外，我们进一步改进和设计了V型TCPCS，它可以同时实现夏季制冷和冬季加热的双重功能。此处组装的TCPCS是用于自适应冷却的简单，可行且可扩展的结构。

更新日期：2020-05-21

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