通过建立一模型房间,从室内空气温度分布、PPD、悬浮颗粒分布及CO2浓度几方面模拟研究了置换通风条件下室内空气品质。结果显示置换通风条件下的IAQ完全能满足相关规范规定,达到人体对健康的要求。小微粒有很好的跟随性,大微粒在重力作用下下沉到地面,CO2的浓度随高度的增加而增大,呼吸区的空气清新。 Through building a model room, indoor air quality under the condition of displacement ventilation was simulated from several aspects such as indoor air temperature distribution, PPD, suspended particle distribution and CO2 concentration. The results show that the IAQ under the ventilation conditions can completely meet the requirements of the relevant norms and meet the human health requirements. Small particles have good followability, large particles sink to the ground under the action of gravity, the concentration of CO2 increases with height increases, the breathing zone of fresh air.