屋顶绿化传热临界温度  

Indoor Temperature of Green Roof in Heat Transfer Critical State

作　　者：唐鸣放[1,2] 杨真静[1,2] 郑澍奎[1,2] 

机构地区：[1]重庆大学建筑城规学院 [2]山地城镇建设与新技术教育部重点实验室,重庆400045

出　　处：《土木建筑与环境工程》2013年第2期100-104,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：根据实验研究结果,分析了屋顶绿化在被动式室内热环境状态下的热流特点。研究结果表明,不能采用等效热工参数评价其隔热性能。采用屋顶绿化实验方法,证明了屋顶绿化在室内人体可接受的热环境范围内存在着不向室内传热的临界温度状态。通过屋顶内表面热流与室内外温差的相关性分析,得出屋顶绿化的传热临界温度低于室外平均气温1.5℃。Based on the existing experiment,the heat flux characteristics of green roof in passive indoor thermal environment and thermal parameter suitable for evaluation of the thermal performance of green roof were analyzed.It is found that there is indoor critical temperature in acceptable indoor thermal environment range for green roof,in which there is no heat transfer from roof.Through the correlation analysis of internal surface heat flux of roof and the temperature difference between indoor and outdoor,it is shown that the indoor critical temperature is 1.5℃ lower than air temperature outside for green roof.

关 键 词：屋顶绿化 室内温度 节能 

分 类 号：TU111.4[建筑科学—建筑理论]