Indoor air quality in the Swedish housing stock and its dependence on building characteristics

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• 作者：Sarka Langer ; Gabriel Bek?
• 关键词：Building characteristics ; Indoor climate ; Air exchange rate ; NO2 ; Formaldehyde ; TVOC
• 刊名：Building and Environment
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：69
• 期：Complete
• 页码：44-54
• 全文大小：735 K

文摘

Data from a recent Swedish survey on the status of the housing stock and indoor air quality were placed in the public domain by the Swedish National Board of Housing, Building and Planning in 2011. The available parameters included the year of construction, dwelling location, type of ventilation system, temperature, relative humidity, air exchange rate (AER), and concentrations of nitrogen dioxide (NO₂), formaldehyde and Total Volatile Organic Compounds (TVOC) from 157 single-family houses and 148 apartments. The median AER was lower in the single-family houses than in apartments (0.33?h^?1 vs. 0.47?h^?1). The majority of houses (80 % ) did not comply with the building code that requires 0.5 air changes per hour. The median concentrations in single-family houses and apartments were 6.0 and 10?¦Ìg/m³, respectively, for NO₂, 22 and 13?¦Ìg/m³ for formaldehyde, and 236 and 143?¦Ìg/m³ for TVOC. All of these differences between single-family houses and apartments were statistically significant. The median values for AER and the median values for the concentrations of NO₂, formaldehyde and TVOC were similar to those found in other Scandinavian studies. Multivariate linear regression models revealed that air exchange rate was a significant predictor of the concentrations of all three indoor pollutants. While ventilation seemed to be a source of NO₂, increased ventilation rate appeared to decrease the indoor concentrations of formaldehyde and TVOC.