太阳能建筑挑檐构型节能优化  

Energy Efficient Optimization of Overhanging Eave Structure in Solar Building

作　　者：李宪莉[1] 由世俊[1] 张欢[1] 尤占平[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《建筑科学》2010年第4期85-90,共6页Building Science

基　　金："十一五"国家科技支撑计划项目(2006BAJ04B01);天津市应用基础及前沿技术研究计划项目(09JCZDJC24600)

摘　　要：合理的建筑挑檐构型是暖通空调领域节能的一个途径。本文首先从建筑节能的角度出发,以太阳能建筑为研究对象,以夏季与冬季遮阳量之差E达到最大为目标,并兼顾建筑要求,对挑檐构型进行优化;而后利用Matlab程序的图形用户界面技术编制人机交互界面,实现了对全国270个台站最佳挑檐宽度范围的可视化计算。研究结果表明,存在最佳的挑檐距窗户上沿距离d和挑檐宽度W使E最大;对于单层住宅建筑,当窗户高度Hw处于1.5～2.4m之间时,E的最大值随Hw的增大而增大,但同时会带来建筑造价和围护结构热损失增大的问题,应进行综合分析;北方地区挑檐的节能优势明显高于南方地区,应加大其节能优化的力度。Rational building overhanging eave structure is one approach for energy-saving in HVAC system.In this paper,starting from the building energy efficiency,solar building was taken as the research object,the maximum difference of sunshade amount in summer and winterEwas considered as the target function to optimize the overhanging eave structure.And then,the graphic user interface technology of Matlab program was used to program human-computer interactive interface,and the visual calculations of the optimal overhanging eave width range of 270 stations in China were realized.The results demonstrated that there existed an optimal distance of overhanging eave from the upper edge of windowdand an optimal overhanging eave widthWthat would maximizeE.For the single-floor residential building,when the window heightHw was of 1.5～2.4 m,the maximum value ofEwould be increased with the increase ofHw,however,it would cause increased building cost and increased heat loss from the envelope at the same time,therefore,a comprehensive analysis should be given out.In addition,the energy efficiency advantage of overhanging eave in the northern region was significantly higher than the southern region,and the strength of energy efficiency optimization should be increased.

关 键 词：太阳能建筑 遮阳量 挑檐构型 MATLAB程序 

分 类 号：TU201.5[建筑科学—建筑设计及理论] TK511.2[动力工程及工程热物理—热能工程]