We are thrilled to announce a new, outstanding achievement accomplished by University Of Bristol, within the context of TwinAir project.
The article Indoor Exchange Rates and Penetration From Outdoors in an Instrumented Terraced House (Townhouse) Using Gas Tracers: Implications for Particles and Gases Indoors” has been published at “Indoor Air” Journal by WILEY.
The authors of the article are: James C. Matthews, M. Anwar H. Khan, Matthew D. Wright, Prem K. Perumal, Carl J. Percival, Ian D. Bull, Ian J. Craddock, Dudley E. Shallcross and its respective DOI is the following: https://doi.org/10.1155/2024/9204433
The abstract and the keywords of the publication can be found below
Abstract
Air exchange rate is a key determinant of indoor air quality which is highly variable within the rooms of a naturally ventilated terraced house (townhouse). Window opening can increase the air exchange rate, but internal door opening between rooms inside decreases the rate. Inert perfluorocarbon gas-phase tracers demonstrated flow within the house, and the penetration of tracers released outside into the house showed a strong dependence on wind speed and wind direction. Between experiments, it was found that the tracer could be detected within certain parts of the house weeks after the initial release, with implications for pollutants and their impact on the indoor environment. A limited number of reactive tracer experiments suggested an upper limit for indoor [OH]~1 × 105 molecule cm-3 with up to 0.5 ppt of [NO3] estimated, leading to an estimated indoor lifetime for d5 isoprene of many hours. Ultrafine particulate matter generated in the kitchen travels throughout the house, and the persistence of elevated aerosol concentrations is seen even in well-ventilated rooms, with implications for particle exposure in the evening and during the night.
Keywords: air exchange rate; air quality; cooking aerosol; indoor pollutants; particulate matter
You can reach the full article following this link: https://onlinelibrary.wiley.com/doi/full/10.1155/2024/9204433