大型LED屏幕散热效率的模拟分析  

Simulation Analysis of Heat Dissipation Efficiency of Large LED Screens

作　　者：孙明明 Sun Mingming(Shanghai Reseach Institute of Building Sciences Co.,Ltd.,Shanghai,201108)

机构地区：[1]上海市建筑科学研究院有限公司,上海201108

出　　处：《建设科技》2024年第13期16-20,共5页Construction Science and Technology

基　　金：上海市2022年度“科技创新行动计划”启明星(扬帆专项)项目“航站楼特征要素对空调负荷的影响机理及修正方法研究”(编号:22YF1438900)资助。

摘　　要：大型LED屏幕作为时下流行的宣传工具,被广泛运用于商业或民用建筑中。本文针对浙江省金华市某居民楼建筑的大型LED屏幕,选取夏季空气调节室外计算干球温度和夏季极端天气情况下的气候状况,分析屏幕散热情况、热量排除及局部热堆积,给出空间内温度场分布情况和热量排出状况。结果表明,不同角度外界温度变化对屏后温度影响变化不大,而设置风机的数量增加能有效提升屏幕散热效果。本文同时依据以上结论,对具体施工提出建议,为相关工程项目提供参考。As a popular advertising tool nowadays,large LED screens are widely used in both commercial and residential buildings.This study focuses on the large LED screens of a residential building in Jinhua City,Zhejiang Province,selects outdoor dry-bulb temperature during the summer air conditioning season,and analyze the heat dissipation,heat removal,and local heat accumulation of the screen under extreme weather conditions in summer,so as to give the distribution of temperature field and heat removal within the space.The results show that the changes of external temperature at different angles have little effects on the temperature behind the screens,while the increase of the number of fans can effectively improve the heat dissipation effect of the screens.On this basis,this paper puts forward suggestions for specific construction,serving as a reference for relevant engineering projects.

关 键 词：大型LED屏幕 散热效率 极端气候 数值模拟 

分 类 号：TM923.34[电气工程—电力电子与电力传动]