【摘要】 本文探究楼层垂直方向高度变化与窗户开合方式两种因素对PM2.5的I/O比(室内外颗粒物浓度比)的影响,选取具有左右推拉双扇窗和内平开上悬式单扇窗两种窗型的某教室(A栋和B栋)和十六层的某高层办公楼(C栋)进行实测和分析。结果发现,随着楼层的增高,室外风速和室内外压差不断增加。而I/O比随着楼层高度没有明显的变化。B栋建筑(左右推拉式双扇窗)的单位缝隙体积的I/O总体高于A栋(内平开下悬单扇窗),且左右推拉双扇窗的单位I/O较小,其密闭性较内平开上悬式单扇窗更好。更多还原

【Abstract】 This paper explores the influence of two factors of vertical floor height change and window opening and closing on PM2.5 I/O ratio(indoor and outdoor particulate matter concentration ratio) Single window with two kinds of windows of a classroom(Block A and B) and a high-rise office building which has 16 floors(Block C) were measured and analyzed. The results showed that with the increase of the floor, outdoor wind speed and the pressure difference between indoor and outdoor were both increasing. However the I/O ratio of indoor and outdoor particles did not change significantly with the height of the floor. The I/O of the unit gap volume of Building B(left-right push-pull double-headed window) is generally higher than that of Building A(single under open-window the open), and the unit I/O of a left-right push-pull double-headed window is lower than s a single window. Moreover, hermeticity of this kind of double-headed window is better than with a single open window on a flat open top.更多还原