摘要
玻璃幕墙作为建筑外围护结构的薄弱环节,在其夹层腔内填充二氧化硅气凝胶和相变材料可有效降低建筑能耗。以大庆地区过渡季节典型晴天为计算气象条件,建立新型保温相变玻璃幕墙(TW+SiO_(2)+PCM)室内热环境二维传热模型,研究含新型保温相变玻璃幕墙室内逐时温度分布,厘清相变温度为18°C、22°C和26°C的室内热环境变化规律,基于PMV和PDD方法开展室内热舒适性评价对比分析。结果表明:靠近玻璃幕墙内表面和竖墙区域空气温度波动大。在相同水平位置,温度随着高度增加而增加。同时,熔点温度为26°C新型保温相变玻璃幕墙室内热环境PMV值波动小,PPD <10%的舒适时间更长,室内热舒适性更高。
As the weakest structure in the building envelope,glass curtain walls can be filled with silica aerogel and phase change materials in their laminated cavities to effectively reduce building energy consumption.The two-dimensional heat transfer model of the three layers glass curtain wall flled with silica aerogel and phase change materials(TW+SiO_(2)+PCM)is established under the typical sunny conditions in transition season at Daqing.The hourly temperature distribution of indoor thermal environment is studied,and the indoor thermal environment change rule with the PCM melting point temperatures of 18°C,22°C and 26°C is determined.Based on PMV and PDD methods,indoor thermal comfort evaluation and comparison analysis are carried out.The results show that the air temperature fluctuates greatly close to the inner surface of the glass curtain wall as well as the vertical wall.At the same horizontal position,the temperature increases with height in the vertical direction.And when the melting point of PCM is 26°C,the fuctuation of PMV is small,the comfort time with PPD<10%is longer,and the indoor thermal environment is extra comfortable.
作者
张春霞
李栋
杨瑞桐
胡宛玉
刘昌宇
ZHANG Chunxia;LI Dong;YANG Ruitong;HU Wanyu;LIU Changyu(School of Architecture and Civil Engineering,Northeast Petroleum University,Daqing163318,China)
出处
《工程热物理学报》
EI
CSCD
北大核心
2023年第9期2560-2566,共7页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.52078110)。
关键词
玻璃幕墙
热舒适
相变材料
二氧化硅气凝胶
multilayer glass curtain wall
thermal comfort
phase change material
silica aerogel
作者简介
张春霞(1994-),女,硕士,主要从事太阳能利用方面的研究。通信作者:杨瑞桐,博士,E-mail:yangruitong17@163.com。
