Journal
INDOOR AIR
Volume 26, Issue 3, Pages 350-365Publisher
WILEY
DOI: 10.1111/ina.12222
Keywords
Air stuffiness index; CO2; Volatile organic compounds; Aldehydes; Particulate matter
Categories
Funding
- French Observatory for Indoor Air Quality (OQAI)
- Ministry of Housing
- Ministry of Environment
- Ministry of Health
- Environment and Energy Management Agency (ADEME)
- French Agency for Food, Environmental and Occupational Health Safety (ANSES)
- Scientific and Technical Center for Building (CSTB)
- Fundacao para a Ciencia e a Tecnologia (FCT
- Portugal) [SFRH/BPD/102944/2014]
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The aim of this study was to characterize the relationship between Indoor Air Quality ( IAQ) and ventilation in French classrooms. Various parameters were measured over one school week, including volatile organic compounds, aldehydes, particulate matter ( PM2.5 mass concentration and number concentration), carbon dioxide ( CO2), air temperature, and relative humidity in 51 classrooms at 17 schools. The ventilation was characterized by several indicators, such as the air exchange rate, ventilation rate ( VR), and air stuffiness index ( ICONE), that are linked to indoor CO2 concentration. The influences of the season ( heating or non-heating), type of school ( nursery or elementary), and ventilation on the IAQ were studied. Based on the minimum value of 4.2 l/s per person required by the French legislation for mechanically ventilated classrooms, 91% of the classrooms had insufficient ventilation. The VR was significantly higher in mechanically ventilated classrooms compared with naturally ventilated rooms. The correlations between IAQ and ventilation vary according to the location of the primary source of each pollutant ( outdoor vs. indoor), and for an indoor source, whether it is associated with occupant activity or continuous emission.
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