基于场-网络耦合模型建筑内区会议室CO_(2)分析

Analysis on CO_(2) of Conference Room in Building Inner Area Based on Field-Network Coupling Model

用场-网络耦合模型对哈尔滨某综合办公建筑进行空气流动分析,以建筑某内区会议室为例,对不同工况下室内空气流动和CO_(2)体积分数分布进行研究,分析影响会议室CO_(2)体积分数的重要因素。在过渡季对会议室进行了现场实测,模拟结果与实测结果具有一致性。进一步研究过渡季和夏季的若干其他工况,探究建筑不同门窗开启比例对会议室CO_(2)体积分数分布的影响。夏季建筑外窗关闭条件下,建筑整体空气流通较弱,会议室容易出现CO_(2)体积分数高的情况。因此,在必要时,应该对会议室采取机械通风措施。不同季节对会议室CO_(2)体积分数水平影响较大。建筑门窗开启比例也对会议室CO_(2)体积分数分布具有影响。

The air flow analysis of a comprehensive office building in Harbin is carried out by coupling field model and network model.Taking a conference room in the building inner area as an example,the indoor air flow and CO_(2) volume fraction distribution under different conditions are studied,and the important factors that affect the CO_(2) volume fraction in the conference room are analyzed.Some field measurements in the conference room are conducted during the transition season,and the simulation results are consistent with the actual measurements.Other conditions during the transition season and summer are further studied.The influence of different opening ratios of building doors and windows on CO_(2) volume fraction distribution in the conference room is explored.Under the condition of closing the exterior windows of the building in summer,the overall air circulation in the building is weak,and the conference room is prone to high CO_(2) volume fraction.Therefore,if necessary,mechanical ventilation measures should be taken for the conference room.Different seasons have a significant impact on the CO_(2) volume fraction level in the conference room.The opening ratio of building doors and windows also has an impact on CO_(2) volume fraction distribution in the conference room.