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Infrared-Radiation-Enhanced Nanofiber Membrane for Sky Radiative Cooling of the Human Body
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-11-13 , DOI: 10.1021/acsami.9b13933 Runcai Xiao , Chengyi Hou , Weifeng Yang , Yun Su 1 , Yaogang Li , Qinghong Zhang , Peng Gao 2 , Hongzhi Wang
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-11-13 , DOI: 10.1021/acsami.9b13933 Runcai Xiao , Chengyi Hou , Weifeng Yang , Yun Su 1 , Yaogang Li , Qinghong Zhang , Peng Gao 2 , Hongzhi Wang
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Extreme heat events are mainly responsible for weather-related human mortality due to climate change. However, there is a lack of outdoor thermal management for protecting people from extreme heat events. We present a novel infrared-radiation-enhanced nanofiber membrane (NFM) that has good infrared resonance absorption and selectively radiates thermal radiation of the human body through the atmosphere and into the cold outer space. The NFM comprises polyamide 6 (PA6) nanofibers and randomly distributed SiO2 submicron spheres and has sufficient air permeability and thermal–moisture comfortability because of its interconnect nanopores and micropores. We measure the sky radiative cooling performance under a clear sky, and PA6/SiO2 NFM produces temperatures that are about 0.4–1.7 °C lower than those of commercial textiles when covering dry and wet hands and temperatures 1.0–2.5 °C lower than the ambient temperature when thermal conduction and convection are isolated in a closed device. Our processed PA6/SiO2 NFM combines sky radiative cooling with thermal management of the human body very well, which will promote the development of radiative cooling textiles.
中文翻译：
红外辐射增强的纳米纤维膜，可对人体进行天空辐射冷却
极端高温事件主要是由于气候变化导致与天气有关的人类死亡的原因。然而，缺乏用于保护人们免于极端高温事件的室外热管理。我们提出了一种新型的红外辐射增强型纳米纤维膜（NFM），该膜具有良好的红外共振吸收能力，可以选择性地将人体的热辐射通过大气层辐射到寒冷的外部空间中。NFM由聚酰胺6（PA6）纳米纤维和无规分布的SiO 2亚微米球组成，由于具有相互连接的纳米孔和微孔，因此具有足够的透气性和热湿舒适性。我们在晴朗的天空和PA6 / SiO 2下测量天空的辐射冷却性能当覆盖干燥和湿手时，NFM的温度要比商品纺织品低约0.4–1.7°C，而在封闭的设备中将热传导和对流隔离时，NFM的温度要比环境温度低1.0–2.5°C。我们加工的PA6 / SiO 2 NFM将天辐射冷却与人体热管理很好地结合在一起，这将促进辐射冷却纺织品的发展。
更新日期：2019-11-14
中文翻译：
红外辐射增强的纳米纤维膜，可对人体进行天空辐射冷却
极端高温事件主要是由于气候变化导致与天气有关的人类死亡的原因。然而，缺乏用于保护人们免于极端高温事件的室外热管理。我们提出了一种新型的红外辐射增强型纳米纤维膜（NFM），该膜具有良好的红外共振吸收能力，可以选择性地将人体的热辐射通过大气层辐射到寒冷的外部空间中。NFM由聚酰胺6（PA6）纳米纤维和无规分布的SiO 2亚微米球组成，由于具有相互连接的纳米孔和微孔，因此具有足够的透气性和热湿舒适性。我们在晴朗的天空和PA6 / SiO 2下测量天空的辐射冷却性能当覆盖干燥和湿手时，NFM的温度要比商品纺织品低约0.4–1.7°C，而在封闭的设备中将热传导和对流隔离时，NFM的温度要比环境温度低1.0–2.5°C。我们加工的PA6 / SiO 2 NFM将天辐射冷却与人体热管理很好地结合在一起，这将促进辐射冷却纺织品的发展。
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