粗放型屋顶绿化隔热效果分析  

Aralysis on Thermal Insulation Characteristics of Extensive Green Roofs

作　　者：杨真静[1] 唐鸣放[1] 郑澍奎[2] 

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]西华大学建筑与土木工程学院,成都610039

出　　处：《土木建筑与环境工程》2012年第3期124-128,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金资助项目(50978261)

摘　　要：以自然通风层的屋顶绿化为研究对象,对有无绿化屋顶内表面温度进行比较,采用实测数据统计分析的方法,以全夏季为研究周期,按不同温度区间分析屋顶内表面温度的分布特性,比较2种状态下屋顶内表面温度的分布频率以及总温度,得到绿化屋顶内表面温度<34℃出现的频率占总周期的90%,是无绿化屋顶的1.6倍,大于36℃高温的频率为无绿化屋顶的4.6%,绿化屋顶内表面大于30℃的温度总量约为无绿化屋顶的1/3,且绿化屋顶的隔热性能与室外气温有较强的正向性,随着气温的升高,绿化屋顶的隔热性能体现得更加充分。Through comparison of internal surface temperature （IST） of green roofs with that without green roofs through field measurement and statistics analysis, green-roof under natural convention climate in summer was analyzed. Distribution frequency and sum of IST under the conditions with and without green roofs were investigated by dividing IST into several ranges. It is shown that the frequency of IST lower than 34℃ for green roofs was 90%, which was about 1.6 times of that for roofs without green. While the frequency of IST exceeding 34 ℃ for green roofs was 4.6 % of that for roofs without green, and the sum of IST exceeding 30 ℃ was about 1/3 of that for roofs without greening. Moreover, the property of thermal insulation of green roofs had strong positive relation with outdoor temperature. The thermal insulation characteristic was better as outdoor temperature grew up.

关 键 词：屋顶 绿化 表面温度 隔热特性 

分 类 号：TU111[建筑科学—建筑理论]