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Universal strategy for all-weather and all-terrain radiative cooling with non-reciprocal mid-infrared windows

机译：全天候和全地形辐射冷却的普遍策略与非互惠中红外窗户

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摘要

Passive radiative cooling has a potential impact on global energy consumption, while it is vulnerable to weather and surroundings, hindering its practical applications. Here, we present a facile pyramidal micro-structure that can be formed on a mid-infrared (MIR) window for achieving non-reciprocal propagation whereby the incoming heat flux from low-transparency atmosphere and/or surrounding high-rise buildings is suppressed without limiting the outgoing radiation from radiative coolers. In an ideal case without solar absorption, convective, and conducive heat losses, a temperature reduction limit of 110 degrees C is simulated even under a low-transparency sky. For an unfavorable weather and surrounding obstruction condition, the radiative cooler integrated with the non-reciprocal MIR window can still reach a 10 degrees C temperature reduction, while a standalone radiative cooler fails the sub-ambient cooling. The effects of non-reciprocal MIR windows on China's average temperatures in summer are estimated, roughly corresponding to a 45% energy savings for cooling, around 180 TWh. This universal strategy would remove the bottlenecks of putting passive radiative cooling into practice worldwide even if local weather and surrounding terrain conditions are undesirable.
机译：被动辐射冷却对全球能量消耗产生了潜在影响，而它易于天气和周围环境，阻碍了其实际应用。在这里，我们介绍了一种容易金字塔微结构，可以在中红外（MIR）窗口上形成，以实现非互易传播，从而抑制了来自低透明气氛和/或围绕高层建筑物的进入热通量限制来自辐射冷却器的外向辐射。在没有太阳能吸收的理想情况下，对流和有利于热损失，即使在低透明度天空下也会模拟110℃的温度降低限度。对于不利的天气和周围的障碍状态，与非互惠MIR窗口集成的辐射冷却器仍然可以达到10摄氏度的降温，而独立的辐射冷却器则失效亚环境冷却。估计非互惠MIR Windows对中国平均气温的影响，估计大致相当于45％的冷却能量节省，约180 TWH。这种普遍策略将消除瓶颈在全球范围内将被动辐射冷却放入实践中，即使当地天气和周围的地形条件是不希望的。

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  • 来源
    《Solar Energy》 |2020年第9期|471-478|共8页
  • 作者

    Wei Mingming; Wu Wanchun; Li Dong; Xu Hua; Lu Yuehui; Song Weijie;

  • 作者单位

    Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Peoples R China;

    Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Peoples R China;

    Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Peoples R China;

    Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    High humidity; Atmospheric transparency; High-rise buildings; Non-reciprocal transmission; All-weather and all terrain;

    机译：高湿度;大气透明度;高层建筑;非互易传输;全天候和所有地形;

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