摘要:
选取典型的室内公共场所, 按照室内空气检测标准进行布点采样, 检测这些场所的CO2浓度及采样时的温度、湿度及空气流速结果发现, 商场内CO2浓度基本都在标准限值内, 超市内CO2浓度超标严重, 且CO2分布与超市内采样层区之间无明显的相关性。其它类型场所CO2分布各有差异, 但浓度值基本在标准限度值上下浮动统计结果:公共场所内影响CO2浓度的主要原因是空气流速与人群密度的大小空气流速越快, CO2浓度越低;人群密度越大, CO2浓度越高此外, 根据, James L Repace理论进行分析发现, 各类公共场所空气交换状况均较差, 存在威胁人们健康的风险。
Abstract:
Typical indoor public places were selected to detect the concentrations of CO2 and the temperature, humidity and air velocity when sampling, according to the detection standard of indoor air quality.It found that the concentrations of CO2 inside the shops were almost below the standard, but those in supermarkets exceeded the standard seriously, and there was no obvious correlation between the concentrations of CO2 and sampling areas.The concentration distribution of CO2 in other places were different from each other, but these concentrations floated up and down around the standard limit.Through statistical analysis, it concluded that the air flow rate and population density in the public places were main factors that affecting CO2 concentrations.The faster the air flowed, the lower the concentration of CO2 was;the bigger the population density was, the higher the concentration of CO2 was.In addition, according to James L Repace's theory, it proved that air exchange conditions were very poor in all kinds of public places, and there was a threat to people's health.
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