摘要
建筑围护结构热工特征是影响住区热环境的重要因素。本文通过缩比模型实验研究了不同建筑围护结构形式下其外表面温度的变化规律。采用数值模拟方法详细分析了建筑外表面反射率及围护结构保温形式对对住区热环境的影响。研究结果表明:提高建筑表面反射率可有效降低围护结构表面温度,进而缓解局地热岛;与外保温相比,相同围护结构热阻下采用内保温住区内部日间空气温度峰值可降低1.5℃以上。
Thermal characteristics of building envelope are important factors affecting the thermal environment in residential areas. Scale model experiments were carried out to investigate the variation of building surface temperature under different conditions of envelope structure. The impact of different surface reflectivity and different wall insulation structures on thermal environment in residential areas were studied through numerical simulation. The results indicated that building envelope temperature could be reduced by improving the surface reflectivity. Compared with external insulation, the peak air temperature in the residential areas could be reduced by more than 1.5℃ by using internal insulation with the same envelope＇s thermal resistance.
出处
《建筑科学》
CSCD
北大核心
2016年第2期82-86,共5页
Building Science
基金
中央高校基本科研业务费专项资金资助项目(FRF-TP-12-020A3)
国家自然科学青年基金(51008021)
关键词
热环境
热岛效应
绿化
围护结构
计算流体动力学
thermal environment, heat island effect, thermal characteristics, building envelope, computational Fluid Dynamics （CFD）
