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Modeling and controlling indoor formaldehyde concentrations in apartments: On-site investigation in all climate zones of China

机译：模拟和控制公寓中的室内甲醛浓度：在中国所有气候区的现场调查

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摘要

Formaldehyde has substantial adverse impacts on human health, and formaldehyde exposure primarily occurs in indoor environments. This study investigated the infiltration rates and indoor formaldehyde concentrations in 5 climate zones of China. In the winter, apartments in northern China suffer from higher indoor formaldehyde concentrations than apartments in southern China. The median indoor formaldehyde concentrations were 56 mu g/m(3) (25%, 75%: 38, 91 mu g/m(3)) in northern China and 40 mu g/m(3) (25%, 75%: 30, 61 mu g/m(3)) in southern China. There is a clear decrease in indoor formaldehyde concentrations in China. We also studied the relationships of the indoor air temperature, years of decoration, infiltration rate and source characteristic with formaldehyde concentrations in closed conditions. A multiple regression model that related these factors to the formaldehyde concentrations in closed conditions was constructed (R-2 = 0.75). The optimal curve for the suitable combination of temperature and infiltration rate to maintain low formaldehyde concentrations with the lowest cost was calculated for northern and southern China. By comparing the optimal curve and the state point of each city, we can infer the suitable tendency of indoor temperature and infiltration rate for each city. In Tianjin and Shenyang, apartments are overheating, thus causing a high percentage of some homes to have formaldehyde concentrations above the Chinese national standard. In Shanxi, Xinjiang, Yunnan and the Yangtze River Delta, the infiltration rate should be increased to some extent to achieve better indoor air quality. In Hunan, Hubei and Chongqing, indoor temperatures could be increased to improve indoor thermal comfort.
机译：甲醛对人体健康具有重大不利影响，甲醛暴露主要发生在室内环境中。本研究调查了中国5个气候区的渗透率和室内甲醛浓度。在冬季，中国北方的公寓比中国南方的公寓遭受更高的室内甲醛浓度。在中国北方，室内甲醛的中位数浓度为56μg / m（3）（25％，75％：38，91μg/ m（3））和40μg/ m（3）（25％，75％） ：中国南部30，61μg / m（3））。中国室内甲醛浓度明显下降。我们还研究了室内空气温度，装修年限，渗透率和源特性与封闭条件下甲醛浓度之间的关系。建立了将这些因素与封闭条件下的甲醛浓度相关联的多元回归模型（R-2 = 0.75）。计算了华北和华南地区温度和渗透率的适当组合以保持最低甲醛浓度和最低成本的最佳曲线。通过比较最佳曲线和每个城市的状态点，我们可以推断出每个城市的室内温度和入渗率的合适趋势。在天津和沉阳，公寓过热，从而导致部分房屋的甲醛浓度高于中国国家标准。在山西，新疆，云南和长江三角洲，应增加一定的入渗率，以达到更好的室内空气质量。在湖南，湖北和重庆，可以提高室内温度以提高室内热舒适度。

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  • 来源
    《Building and Environment》 |2018年第1期|98-106|共9页
  • 作者

    Dai Xilei; Liu Junjie; Yin Yihui; Song Xiang; Jia Susu;

  • 作者单位

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin 300072, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Indoor formaldehyde; Multiple regression model; Optimization;

    机译：室内甲醛;多元回归模型;优化;

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