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Indoor air quality ...
Indoor air quality in passive and conventional new houses in Sweden
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- Langer, Sarka, 1960 (author)
- IVL Svenska Miljöinstitutet AB,IVL Swedish Environmental Research Institute,Göteborgs universitet,University of Gothenburg,IVL, Sweden; University of Gothenburg, Sweden
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- Beko, G. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark,DTU Technical University of Denmark, Denmark
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- Bloom, Erica (author)
- IVL Svenska Miljöinstitutet AB,IVL Swedish Environmental Research Institute,IVL, Sweden
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- Widheden, A. (author)
- IVL Svenska Miljöinstitutet AB,IVL Swedish Environmental Research Institute,IVL, Sweden
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- Ekberg, Lars, 1962 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden; CIT Energy Management AB, Sweden
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
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In: Building and Environment. - : Elsevier BV. - 0360-1323 .- 1873-684X. ; 93:P1, s. 92-100
- Related links:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The indoor environment was evaluated in 20 new passive houses and 21 new conventionally built houses during the 2012/2013 and 2013/2014 heating seasons. Temperature, relative humidity (RH), the concentrations of NO2, ozone, formaldehyde, volatile organic compounds (VOC) and viable microbiological flora were measured. Air exchange rates (AER) were estimated from the CO2 concentrations measured in the bedrooms. The median AER was slightly higher in the passive houses than in the conventional ones (0.68 h-1 vs. 0.60 h-1). The median concentrations in the passive and the conventional buildings were 10 and 12μg/m3 for NO2, 9.7 and 11 μg/m3 for ozone, 11 and 16μg/m3 for formaldehyde, and 270 and 150 μg/m3 for TVOC, respectively. Significant differences in the TVOC and formaldehyde concentrations between the two groups of buildings indicated substantial sources of TVOC present in the passive houses, while sources of formaldehyde may have been more pronounced in the conventional houses. In contrast to the passive houses, the indoor microbiological flora indicated possible mould or moisture problems in six (29%) of the conventionally built houses. When compared with the results previously reported for the Swedish housing stock, AERs and NO2 concentrations were significantly higher in both groups of newly built buildings, while formaldehyde concentrations were significantly lower in the passive houses. TVOC concentrations were not significantly different from those reported for the housing stock, although the most abundant individual VOCs were present mostly at higher concentrations in the new buildings.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine (hsv//eng)
Keyword
- NO<inf>2</inf>
- Air exchange rate
- Indoor air quality
- Energy efficient houses
- Formaldehyde
- VOC
Publication and Content Type
- art (subject category)
- ref (subject category)
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