遮阳翻板-围护结构间的长波辐射换热数值分析  

NUMERICAL ANALYSIS ON LONG-WAVE RADIATIVE HEAT TRANSFER OF ENVELOPE-LOUVER SYSTEM

作　　者：蒋福建[1] 李峥嵘[1] 赵群[2] 陶求华[1] 

机构地区：[1]同济大学机械与能源工程学院,上海200092 [2]同济大学建筑与城市规划学院,上海200092

出　　处：《太阳能学报》2016年第3期690-696,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51278349)

摘　　要：建立用于描述遮阳翻板-围护结构系统与周边环境间关系的二维简化模型,以此为基础利用ANSYS软件对上海地区夏季典型日翻板和围护结构表面的长波辐射换热情况进行数值计算,指出忽略翻板对围护结构壁面长波辐射换热的影响将造成空调负荷和能耗计算不"安全"。分析翻板角度、安装距离、表面发射率和安装尺寸4个因素对围护结构外壁面和翻板表面长波辐射换热的影响程度。This paper established a 2D canyon model with building＇ s envelope and louvers. Based on this model, the paper analyzed the long-wave radiative heat transfer（LRHT） at envelope and louvers by numerical simulation of ANSYS software, which is on typical day of summer in Shanghai. The result showed that it would caused insecurity for load or energy cosumption caculation if the effect of louvers on the LRHT at the envelope surface was ignored. The impact of louver＇ s angle, insertion distance, emmitance and geometry on the long-wave radiative heat transfer has been also anayzed in this paper.

关 键 词：遮阳翻板 围护结构 数值分析 长波辐射换热 

分 类 号：TU111.4[建筑科学—建筑理论]