真空玻璃改造香港地区既有玻璃幕墙的热性能研究  

Thermal performance study of retrofitting existing glazing curtain walls with vacuum glazing in Hong Kong region

作　　者：周浩 杨洪兴[1] 石文超 邱昌煜 ZHOU Hao;YANG Hongxing;SHI Wenchao;QIU Changyu(Department of Building Environment and Energy Engineering,The Hong Kong Polytechnic University,Hong Kong HKG,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China)

机构地区：[1]香港理工大学建筑环境及能源工程学系,中国香港HKG [2]中国科学院广州能源研究所,广东广州510640

出　　处：《西安工程大学学报》2024年第5期19-27,共9页Journal of Xi’an Polytechnic University

摘　　要：为降低既有建筑的运行能耗,提出一种应用真空玻璃对香港地区高层建筑既有玻璃幕墙的节能改造方法,并通过户外实验测试对比研究了节能改造前后幕墙的热工性能和热舒适水平。结果表明,该节能改造方法可显著降低幕墙的内表面温度、内表面热流密度、太阳辐射透过率和太阳得热系数,并提高室内的热舒适水平。其中内表面热流密度平均降幅高达81.6%,太阳得热系数最大降幅可达83%,有利于降低建筑冷负荷。此方法适用于空调负荷需求大的城市,其分析结果将为在炎热气候地区开展高层建筑既有玻璃幕墙节能改造工作提供指导,并为实现“碳中和”目标助力。To reduce buildings’operational energy consumption,a method of retrofitting the glazing curtain walls of high-rise buildings in Hong Kong region with vacuum glazing was proposed.The thermal performance and indoor thermal comfort of the retrofitted and non-retrofitted curtain walls were comparatively studied through outdoor experimental tests.The results show that this energy-saving retrofit method can significantly reduce the internal surface temperature,internal surface heat flux,solar transmittance and solar heat gain coefficient of the curtain wall,while improving indoor thermal comfort levels.Specifically,the average reduction of internal surface heat flux is as high as 81.6%,and the maximum reduction in solar heat gain coefficient is up to 83%.This means that the proposed retrofitted solution can effectively contribute to a reduction in energy use for cooling,and is suitable for using in cities with high cooling demand.The analysis results will provide guidance for energy-saving retrofits of existing curtain walls in high-rise buildings in hot-climate cities,contributing to the achievement of carbon neutrality goals.

关 键 词：真空玻璃 玻璃幕墙 节能改造 热工性能 热舒适 建筑能耗 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]