筒仓
涂层
屋顶
发射率
材料科学
环境科学
复合材料
工程类
光学
结构工程
机械工程
物理
作者
Yuanzhu Cai,Zihan Zhang,Zhuo Yang,Zhi Fang,Shuping Chen,Xiaolong Zhang,Wen Li,Yinghua Zhang,Hongqiang Zhang,Zhipeng Sun,Yangang Zhang,Yanwen Li,Lianhua Liu,Weidong Zhang,Xue
出处
期刊:Heliyon
[Elsevier]
日期:2023-04-01
卷期号:9 (4): e14599-e14599
标识
DOI:10.1016/j.heliyon.2023.e14599
摘要
The thermal performance of a novel exterior coating material for commonly used grain and food-grain oil structures was investigated. Grain structures included a concrete squat silo and a concrete warehouse while the edible oil structure was a concrete sided tank. The exterior coating provided excellent moisture runoff and solar reflectance properties and is best described as a superamphiphobic self-cleaning passive subambient daytime radiative cooling (SSC-PSDRC) coating. The coating exhibited a remarkable subambient daytime cooling effect in various structures in different climatic regions. Compared with the roof surface temperatures of a cool white-coated concrete grain silo and a gray carbon iron-based edible oil storage tank, those of the PSDRC coated top surfaces could be reduced by 37 °C and 33 °C, respectively. The roof surface temperature of a warehouse painted with a cool-white coating-with a solar reflectance of 0.9 and an emissivity of 0.85-and that of a warehouse with the roof installed with aluminised polymer waterproof membranes were 19 °C and 18 °C higher than that of the PSDRC warehouse, respectively. Consequently, the interior temperature of the wheat pile in the PSDRC grain silo was 10 °C lower than that in the control squat silo. With the inner loop flow temperature control system operating, the interior air temperatures of the PSDRC west-facing separate space were 6 °C and 3 °C higher than those of the cool-white coated and control west-facing separate spaces, respectively. Even after the application of PSDRC coating for only a few days, the interior air temperature of the PSDRC oil storage tank was reduced by 38 °C, and the interior temperature of the oil storage tank was reduced by 4 °C. Furthermore, in practical applications, the coating showed impressive superamphiphobic self-cleaning capabilities and super aging resistance. The wide applications of the coating would have far-reaching, global implications for maintaining grain and edible oil products, particularly in the sub-tropical climates.
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