Deposition rates of unattached and attached radon progeny in room with turbulent airflow and ventilation.
In this paper deposition rate coefficients for unattached and attached radon progeny were estimated according to a particle deposition model for turbulent indoor airflow described by Zhao and Wu [2006. Modeling particle deposition from fully developed turbulent flow in ventilation duct. Atmos. Environ. 40, 457-466]. The parameter which characterizes turbulent indoor airflow in this model is friction velocity, u*. Indoor ventilation changes indoor airflow and friction velocity and influences deposition rate coefficients. Correlation between deposition and ventilation rate coefficients in the room was determined. It was shown that deposition rate coefficient increases with ventilation rate coefficient and that these parameters of the Jacobi room model cannot be assumed to be independent. The values of deposition rate coefficients were presented as functions of friction velocity and ventilation rate coefficient. If ventilation rate coefficient varies from 0.1 up to 1h(-1), deposition rate coefficients for unattached and attached fractions were estimated to be in the range 3-110 h(-1) and 0.015-0.35 h(-1), respectively.
Faculty of Sciences, University of Kragujevac, R. Romanovic 12, 34000 Kragujevac, Serbia. nstevanovic@kg.ac.rs
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Stevanovic
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VM
Markovic
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Nikezic
D000392:Air Movements; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D011835:Radiation Protection / Q000379:methods; D011886:Radon / Q000032:analysis / Q000737:chemistry; D017687:Radon Daughters / Q000032:analysis* / Q000737:chemistry*; D018570:Risk Assessment; D014691:Ventilation
D000396:Air Pollutants, Radioactive; D017687:Radon Daughters; D011886:Radon