infrared transmittance
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Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 147
Author(s):  
Xiaoyu Xie ◽  
Yang Liu ◽  
Ying Zhu ◽  
Zhao Xu ◽  
Yanping Liu ◽  
...  

Smart textile with IR radiative cooling is of paramount importance for reducing energy consumption and improving the thermal comfort of individuals. However, wearable textile via facile methods for indoor/outdoor thermal management is still challenging. Here we present a novel simple, yet effective method for versatile thermal management via silver-coated polyamide (PA) textile. Infrared transmittance of coated fabric is greatly enhanced by 150% due to the multi-order reflection of silver coating. Based on their IR radiative cooling, indoors and outdoors, the skin surface temperature is lower by 1.1 and 0.9 °C than normal PA cloth, allowing the textile to be used in multiple environments. Moreover, the coated fabric is capable of active warming up under low voltage, which can be used in low-temperature conditions. These promising results exemplify the practicability of using silver-coated textile as a personal thermal management cloth in versatile environments.


2021 ◽  
Vol 121 ◽  
pp. 111485
Author(s):  
Jiran Liang ◽  
Shuangli Wang ◽  
Dangyuan Lei ◽  
Zhaoyang Wang ◽  
Xinzhe Li

2021 ◽  
Author(s):  
Jingwen Li ◽  
Zhen Hua ◽  
Jiao Bai ◽  
Qian Zhou ◽  
Xiaohao Wang ◽  
...  

2021 ◽  
Author(s):  
Xiaoyu Xie ◽  
Yang Liu ◽  
Zhao Xu ◽  
Dengteng Ge ◽  
Lili Yang

Abstract Personal thermal management (PTM) is of paramount importance for reducing energy consumption and improving the thermal comfort of individuals. However, wearable textile via facile methods for indoor/outdoor PTM is still challenging. Here we present a novel simple yet effective method for versatile PTM via silver coated textile. Infrared transmittance of coated fabric is greatly enhanced by 150% due to the multi-order reflection of silver coating. Based on their IR radiative cooling, in indoor and outdoor, the skin surface temperature is lower by 1.1˚C and 0.9˚C than normal cloth, allowing the textile to be used in multiple environments. Moreover, the coated fabric is capable of active warming up under low voltage, which can be used in low-temperature conditions. These promising results exemplify the practicability of using silver coated textile as a personal thermal management cloth in versatile environments.


2021 ◽  
Vol 858 ◽  
pp. 158337
Author(s):  
Jinxin Gu ◽  
Hang Wei ◽  
Feifei Ren ◽  
Qingpu Fan ◽  
Gaoping Xu ◽  
...  

2021 ◽  
Author(s):  
Rong Zhang ◽  
Bo Xiang ◽  
Min Feng ◽  
Liru Xia ◽  
Lei Xu ◽  
...  

Abstract Both high visible transparency and strong solar modulating ability are highly required for energy-saving smart windows, but conventional responsive materials usually have low transparency and narrow solar transmittance range. Herein, we report a significant advance toward the design and fabrication of responsive smart windows by trapping novel V0.8W0.2O2@SiO2 doped poly(N-isopropyl acrylamide) (PNIPAm) thermochromic liquid hydrogel within two glass panels. The smart window is highly transparent to allow solar transmittance at low temperatures, while turns opaque automatically to cut off solar energy gain when exposed in sunlight. With a remarkably low content (1.0wt‰) of dopant, V0.8W0.2O2@SiO2/PNIPAm (VSP) hydrogels exhibit ultrahigh luminous transmittance Tlum of 92.48% and solar modulation ∆Tsol of 77.20%. The superior performance is mainly attributed to that V0.8W0.2O2@SiO2 doping induces PNIPAm particles’ size reduction and internal structure change. W-doping decreases the phase transition temperature (Tc) of VO2 from 68 ºC to ~30 ºC (close to the Tc of PNIPAm), contributing to an unprecedented infrared transmittance modulation. Especially, the smart window shows excellent energy-saving during daytime outdoor demonstrations where practically achievable cooling temperature reaches up to 15.1 ºC. In addition, the smart window exhibits outstanding stability, as embodied by unchanged optical performance even after 100 transparency-opaqueness reversible cycles. This new type of thermochromic hydrogel offering unique advantages of shape-independence, scalability together with soundproof functionality promises potential applications in energy-saving buildings and greenhouses.


Author(s):  
Rong Zhang ◽  
Bo Xiang ◽  
Yuchun Shen ◽  
Liru Xia ◽  
Lei Xu ◽  
...  

Both high visible transparency and strong solar modulating ability are highly required for energy-saving smart windows, but conventional responsive materials usually have low transparency and narrow solar transmittance range. Herein,...


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