破碎空心微球基辐射冷却涂层冷却性能增强机理
Mechanisms of enhanced cooling performance of broken hollow microsphere-based radiative cooling coatings
中文简介
辐射冷却涂层提供了一种很有前途的建筑围护结构解决方案,通过实现无电输入或温室气体排放的被动冷却来降低能耗。该技术因其易于应用于各种建筑表面而在建筑行业引起了广泛关注。虽然破碎的空心微球已被证明可以增强此类涂层的冷却性能,但其潜在机制仍不清楚。通过实验分析和数值模拟,我们研究了中空微球/碎片的形状或空隙的存在是否是影响太阳反射率的主要因素。我们的研究结果表明,基于中空微球的辐射冷却涂层在球铣后具有更高的太阳反射率的主要原因是碎片周围产生了新的空隙。这些直径约为 6 μm 的空隙有助于提高太阳反射率。本研究对影响辐射冷却涂层性能的因素进行了全面分析,并为其未来的建筑应用设计和优化提供了见解。
英文摘要(原文)
main reason hollow microsphere-based radiative cooling coatings have higher solar reflectivity after ball-milling is the generation of new air voids around the fragments. These air voids, with a diameter of approximately 6 μm, contribute to the higher solar reflectivity. This study provides a comprehensive analysis of the factors affecting radiative cooling coatings’ performance and offers insights for
题录(GB/T 7714)
Yu X, Chen C. Mechanisms of enhanced cooling performance of broken hollow microsphere-based radiative cooling coatings[J]. Journal of Building Engineering, 2025, 113: 114001. DOI: 10.1016/j.jobe.2025.114001.