基于Airpak的冬季办公室机械通风研究

Mechanical Ventilation of Office Based on Airpak in Winter

运用Airpak软件建立冬季供暖条件下的办公室房间模型,对不同通风条件下室内二氧化碳浓度场和温度场进行模拟,研究室内空气品质与进排气口相对位置及换气次数之间的关系。对模拟结果进行分析可以看出不同气流组织对室内空气品质的影响,根据模拟结果建议冬季办公室房间换气次数应在4~8次/h;引进新风的自然通风口尽量设置在墙壁中部,若将自然通风口设置在墙壁左、右侧时,应将排气口设置在对面外墙尽可能远的侧边即其对面外墙的右、左侧。为办公室房间机械通风设计提供了理论依据。

Airpak software is utilized to establish the office room model under the condition of heating in winter,simulate the indoor carbon dioxide concentration field and temperature field under different ventilation conditions,and study the relationship between the indoor air quality and the relative position of the air inlet and exhaust port and the number of air changes.Based on the analysis of the simulation results,we can see the influence of different air distribution on the indoor air quality.According to the simulation results,it is suggested that the air change frequency of office room in winter should be four to eight times per hour;the natural vent of introducing fresh air should be set in the middle of the wall as far as possible.If the natural vent is set on the left/right side of the wall,the vent should be set on the far side of the opposite external wall as possible,that is,the outside of the opposite wall right/left side of the wall.It provides a theoretical basis for the mechanical ventilation design of the office room.