卧室新风口布置形式对室内空气品质的影响

Influence of Installation Position of Fresh Air Outlet on Bedroom Indoor Air Quality

本文采用数值模拟手段研究了五种不同的新风口布置形式对武汉市某户型卧室内的室内空气品质的影响。本文采用CO_(2)浓度作为评判室内空气质量优劣的指标。通过模拟,可获得不同工况下的室内CO_(2)浓度分布、室内速度矢量图等。结果表明,新风口位于人体呼吸上方时,室内CO_(2)平均浓度及人体呼吸区域CO_(2)平均浓度最低。新风口位于房间中央时,人体呼吸区域CO_(2)平均浓度相对较高。新风口位于房间远离头部一侧、新风口靠近门时,主卧室、次卧室CO_(2)浓度超标。新风口靠近窗时,主卧室CO_(2)浓度超标。综合而言,当新风口布置在人体呼吸上方时,室内空气质量最优。

It proposes a method to install indoor air to improve the indoor air quality,and simulates the installation positions of five different fresh air outlets to obtain indoor conditions under different operating conditions.The distribution of CO_(2)concentration is analyzed together with the indoor speed vector diagram.The results showed that when the fresh air outlets was above the head of the personnel,the indoor CO_(2)concentration and the CO_(2)concentration in the personnel’s head area was the lowest;When the fresh air outlet was in the center of the room,the CO_(2)concentration in the personnel's head area was higher;When the new air outlet was located on the side far from the head of the room and the new air outlet approaches the door,the CO_(2)concentration in the master bedroom and the second bedroom exceeds the standard;When the new air outlet was located near the window,the CO_(2)concentration in the master bedroom exceeded the standard.Integrate the influence of the position of five new air outlets on the air flow in the room,It can be seen that when the new air outlet is arranged above the head of the person,the indoor air quality is best.