开窗面积对颗粒物浓度稀释作用的影响

Effect of Window Area on Dilution of Particulate Matter Concentration

随着生活质量的提高,细颗粒物对室内空气环境的影响备受关注,细颗粒物随呼吸进入人体,对人体健康造成直接性的威胁。本文采用数值模拟的方法研究室内细颗粒物在不同开窗面积通风状态下的分布特征,分析了开窗面积为0.2m^2,0.4m^2,0.6m^2和0.8m^2时的室内颗粒物浓度的分布。结果表明随着开窗面积的增大,室内细颗粒物浓度逐渐降低,因此在室外环境良好时,通过增大开窗面积可快速降低室内细颗粒物浓度,从而改善室内环境。

With the improvement of the quality of life,the impact of fine particles on indoor air environment has attracted much attention.Fine particles enter the human body with breathing and pose a direct threat to human health. In this paper,the distribution characteristics of indoor fine particles under ventilation conditions with different windowing areas are studied by numerical simulation,and the distribution of indoor fine particle concentration is analyzed when the windowing areas are 0.2m^2,0.4m^2,0.6m^2,and 0.8m^2.The results show that the indoor fine particle concentration gradually decreases with the increase of windowing areas.Therefore, when the outdoor environment is good,the indoor fine particle concentration can be rapidly reduced by increasing the windowing area,thereby improving the indoor environment.