办公建筑中空调形式对室内外PM2.5浓度相关性的影响

室外PM2.5可通过新风及围护结构缝隙渗透至室内,室外PM2.5较高时尤为明显,结果导致室内空气中的PM2.5浓度上升。为了研究空调形式对室内外PM2.5浓度相关性的影响,在2015年夏季对重庆某办公建筑中采用不同空调形式的室内外PM2.5浓度进行了实测。实测结果发现:集中式空调、分体式空调和非空调房间室内外PM2.5浓度比变化范围分别为0.59~0.76、0.47~0.76、0.71~0.91。室内外PM2.5浓度相关性系数的排序为:集中式空调环境(0.94)非空调环境(0.92)分体式空调环境(0.77),研究结果表明,办公建筑的空调形式,对室内外PM2.5浓度的相关性有影响。

Influence of air conditioning form on the correlation of indoor and outdoor PM2.5 concentration in office building

Outdoor PM2.5 could penetrate through fresh air and the wall gap into the room especially when outdoor PM2.5 is particularly high, which lead to the rapid rise in the indoor PM2.5 concentration.To determine the influence of the air conditioning system form on the indoor and outdoor PM2.5 concentration, the PM2.5 concentration in the room with different air conditioning forms is measured in the summer of 2015, which is in an office building in Chongqing.The measured results show that: the range of the indoor and outdoor PM2.5 concentration ratio is 0.59~0.76,0.47~0.76,and 0.71~0.91, respectively when the air conditioning system is.The relationship of indoor and outdoor PM2.5 concentration correlation coefficient is centralized air conditioning environment(0.94) >non air conditioning environment (0.92) > decentralized air conditioning environment (0.77).The results show that air conditioning form in office building has the effect of on indoor PM2.5 concentration.