建筑外百叶最佳固定倾角与动态百叶节能潜力  

Optimum fixed slat angle of building's external louvers and energy-saving potential of dynamic louvers

作　　者：李峥嵘[1] 陶求华[1,2] 蒋福建[1] 胡玲周[1] 

机构地区：[1]同济大学机械与能源工程学院,上海200092 [2]集美大学机械工程学院,厦门361021

出　　处：《西安建筑科技大学学报（自然科学版）》2012年第6期767-772,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国际科技合作计划;中美清洁能源联合研究中心建筑节能合作项目(2010DFA72740-03)

摘　　要：旨在探索遮阳外百叶的最佳固定倾角以及分析外部动态百叶窗对建筑能耗的影响.使用模拟分析软件Energy-plus建立了上海某遮阳建筑的模拟分析模型,模拟分析在19种不同百叶倾角下(5°～175°)的建筑全年照明能耗和空调能耗;结果表明,东、西向房间采用水平百叶,固定倾角为45°时全年综合能耗最低,南向房间采用水平百叶,最佳倾角为55°,而北向采用竖直百叶,最佳倾角为65°;采用逐时最大或最小外窗得热量和综合能耗最低对应的百叶倾角作为动态百叶的倾角,得到动态百叶倾角时间表,进行模拟得到动态百叶的全年综合能耗,与最佳固定倾角相比,动态百叶进一步挖掘了遮阳系统的节能潜力,尤其是北向竖直百叶,节能率提高44%.This research is aimed at exploring the optimum fixed slat angle and the influence of dynamic external louvers on the energy consumption of a building.The energy-plus software was used to predict the energy consumption of both lighting and air-conditioning in a representative building model located in Shanghai,where slat angles of external louvers are set at 19 fixed angles ranged from 5° to 175°.Results show that the annual overall energy consumption reach minimum when the fixed angle of horizontal louvers is 45° on the east and west facades;and the optimum fixed slat angle is 55°for horizontal louvers on the south facades,and 65° for vertical louvers on the north facades.The slat angle schedule of dynamic louvers are obtained by extremum of heat gain through windows and the lowest overall energy consumption from above simulation,and then corresponding annual overall energy consumption was calculated.Compared with the optimum fixed slat angle,dynamic louvers could further exploit energy saving potential,especiallyin employing dynamic vertical blinds on the north facades,with an energy saving rate by 44%.

关 键 词：最佳固定倾角 动态百叶 综合能耗 Energy-plus 

分 类 号：TU226[建筑科学—建筑设计及理论]