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首页> 外文期刊>Building and Environment >Indoor air quality analysis of residential buildings in northeast China based on field measurements and longtime monitoring
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Indoor air quality analysis of residential buildings in northeast China based on field measurements and longtime monitoring

机译：基于现场测量和长期监测的东北地区居民住宅室内空气质量分析

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Outdoor air contamination was frequently observed and focused in northeast China in winter when severe cold days are common and understanding dynamic characteristics of indoor air quality in this area is essential for occupants' ventilation strategies. Herein, using spectrophotometric method, GC-MS (Gas Chromatography-Mass Spectrometer) method, TSI DustTrak particle tester and Telaire 7001 CO2 tester, we investigated the concentration change of formaldehyde (HCHO), volatile organic compounds (VOCs), PM2.5 and CO2 of 21 houses for 4 seasons under 2 conditions (airtight and natural ventilation). Moreover, 6 houses were selected to install convenient sensors for longtime monitoring. Outdoor temperature, concentration of PM2.5, residents' opening window behavior, indoor infiltration rate, temperature, relative humidity and the furniture surface area were also recorded for comparison and correlation analysis. According to the detected results, worst indoor conditions were revealed that average concentrations of HCHO (autumn), TVOC (summer), PM2.5 (winter) and CO2 (winter) were 0.094 mg/m(3), 0.924 mg/m(3), 0.073 mg/m(3), and 883 ppm, respectively. Indoor concentration of PM2.5, TVOC and CO2 exceeded the standard limit and they changed with seasonal characteristics. The observed 4 factors have different effects on indoor air quality. Based on this research, it is recommended that outdoor condition be considered while opening and closing window in winter and ventilation be strengthened in summer.
机译：在冬季，严寒天很常见，冬季经常在中国东北观察到室外空气污染，因此了解该地区室内空气质量的动态特征对于乘员的通风策略至关重要。在这里，我们使用分光光度法，GC-MS（气相色谱-质谱仪）方法，TSI DustTrak颗粒测试仪和Telaire 7001 CO2测试仪，研究了甲醛（HCHO），挥发性有机化合物（VOC），PM2.5和PM2.5的浓度变化。在2种条件下（密闭和自然通风）在21个房屋中排放4个季节的二氧化碳。此外，选择了6栋房屋来安装方便的传感器以进行长期监控。还记录了室外温度，PM2.5浓度，居民的开窗行为，室内渗透率，温度，相对湿度和家具表面积，以进行比较和相关分析。根据检测结果，室内最恶劣的条件表明，HCHO（秋季），TVOC（夏季），PM2.5（冬季）和CO2（冬季）的平均浓度分别为0.094 mg / m（3），0.924 mg / m（ 3），0.073 mg / m（3）和883 ppm。室内PM2.5，TVOC和CO2的浓度超过了标准限值，并且随着季节的变化而变化。观察到的四个因素对室内空气质量的影响不同。根据这项研究，建议在冬天打开和关闭窗户时要考虑室外条件，在夏天要加强通风。

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