风压通风下双层玻璃幕墙开口大小和布置对房间自然通风的影响  

IMPACT OF DOUBLE SKIN FACADE OPENING SIZES AND LOCATIONS ON WIND-DRIVEN VENTILATION

作　　者：袁哲 阿其拉图 何国青[1] YUAN Zhe;AQI Latu;HE Guo-qing(College of Civil Engineering and Architecture,Zhejiang University,310058,Hangzhou,China;Zhejiang Yasha Curtain Wall Co.,Ltd.,312000,Shaoxing,Zhejiang,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]浙江亚厦幕墙有限公司,浙江绍兴312000

出　　处：《建筑技术》2025年第2期204-208,共5页Architecture Technology

基　　金：浙江省自然科学基金项目(LY21E080023)。

摘　　要：双层玻璃幕墙(DSF)作为一种具有节能潜力的建筑围护结构,在实际应用中常存在自然通风性能不佳现象。通过计算流体动力学(CFD)模拟试验,分析了风压通风下DSF不同开口布置方案对房间内坐姿上肢区域风速和通风量的影响。结果发现:(1)当出风口面积足够大的情况下,房间通风量主要受DSF内外两层中开口面积较小的影响,只要外层开口面积足够大,双层玻璃幕墙可以取得与单层幕墙相近的通风量;(2)内外层开口贯通虽然可以提高最大风速值,但对整体通风量的影响不大;(3)坐姿上肢区域的风速分布和大小则主要受内层开口位置的影响。在设计DSF时应考虑内层开口与坐姿上肢区域一致,外层开口面积保证进风量,以达到最佳的自然通风效果。As a potentially energy saving type of building envelope,Double Skin Façade(DSF)in practice is often criticized for poor performance in wind-drive ventilation.In this study,the influence of vent sizes and locations on indoor velocity distributions in the upper body zone of a sitting posture is examined using computational fluid dynamics simulation method.The results show that the room ventilation rate is mainly influenced by the smaller of the opening areas of the two DSF layers when the outlet area is sufficiently large and the DSF can achieve the same level of ventilation rates as the single layer façade so long as the vent size of the outer layer is sufficiently large,that the alignment of openings of the two layers help increase the maximum indoor air velocity rather than the ventilation rate,and that the air velocities in the upper body zone of sitting posture is mainly affected by the location of the inner openings.The implication is that the proper DSF design should ensure the presence of inner layer openings at the height of the upper body of a sitting person and the size of outer layer openings sufficiently large to favor for wind-driven ventilation.

关 键 词：双层玻璃幕墙 自然通风 室内风速 通风量 CFD模拟 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]