An experimental approach to measure particle deposition in large circular ventilation ducts. Da, G.; Géhin, E.; Ben-Othmane, M.; Havet, M.; Solliec, C.; and Motzkus, C. Environmental science and pollution research international, 5, 2014.
An experimental approach to measure particle deposition in large circular ventilation ducts. [pdf]Paper  An experimental approach to measure particle deposition in large circular ventilation ducts. [link]Website  abstract   bibtex   
The topic of this study is related to airborne particle dynamics in indoor environments. Lab-scale experiments have been performed to investigate particle deposition velocity to six different surfaces orientations (with respect to gravity) for fully developed turbulent flow in horizontal large circular ventilation ducts. Monodispersed aerosol particles (1-6 μm) were used in the deposition experiments. A very low particle mass (40 ng) was measured reliably above background level on duct surfaces by a means of a nondestructive stencil technique associated with fluorescence analysis. For 2-6 μm particles (diffusion and impaction regime), deposition rates to floors were much greater than rates to the ceiling and greater than rates to the wall. For 1-μm particles, the effect of surface orientation to particle deposition was not significant. Results were compared to the very few similar and published studies. This work was conducted in the frame of the CleanAirNet project which aimed at producing new knowledge, models, and techniques to help controlling the safety food stuffs, through a better control of aerosol particle (bioaerosols) transport and deposition in the ventilation networks of the food industry.
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 keywords = {bio-aerosol,da,food-industries,fr,guillaume,models and,new knowledge,part of the french,particle deposition,presenting author email,project cleanairnet,this study was a,u-pec,ventilation ducts,which aimed at producing},
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 abstract = {The topic of this study is related to airborne particle dynamics in indoor environments. Lab-scale experiments have been performed to investigate particle deposition velocity to six different surfaces orientations (with respect to gravity) for fully developed turbulent flow in horizontal large circular ventilation ducts. Monodispersed aerosol particles (1-6 μm) were used in the deposition experiments. A very low particle mass (40 ng) was measured reliably above background level on duct surfaces by a means of a nondestructive stencil technique associated with fluorescence analysis. For 2-6 μm particles (diffusion and impaction regime), deposition rates to floors were much greater than rates to the ceiling and greater than rates to the wall. For 1-μm particles, the effect of surface orientation to particle deposition was not significant. Results were compared to the very few similar and published studies. This work was conducted in the frame of the CleanAirNet project which aimed at producing new knowledge, models, and techniques to help controlling the safety food stuffs, through a better control of aerosol particle (bioaerosols) transport and deposition in the ventilation networks of the food industry.},
 bibtype = {article},
 author = {Da, Guillaume and Géhin, Evelyne and Ben-Othmane, Mourad and Havet, Michel and Solliec, Camille and Motzkus, Charles},
 journal = {Environmental science and pollution research international}
}
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