Abstract
Tobacco smoking has become one of the greatest sources of indoor inhalable particles. Tobacco smoke changes chemically and physically after it is released into indoor air; these changes can increase secondhand smoke (SHS) toxicity. The SHS as assessed by indoor particulate matter with an aerodynamic diameter of less than 2.5 mm (PM2.5) was investigated experimentally and computationally. Test house experiment was performed to study the PM2.5 concentration under controlled conditions coupled with mathematical model of continuity equation. PM2.5 was measured using a DustTrak personal sampler. Two-dimensional flow and dispersion of cigarette smoke were modeled using computational fluids dynamics model which were solved using Reynolds-averaged Navier–Stokes equations. The effect of air purifier in reducing SHS and thirdhand smoke (THS) was analyzed and evaluated. The results demonstrated that the air purifier cannot control the indoor PM2.5 levels. Furthermore, amount of smoke from main stream of SHS is more compared to side stream and THS can be evaluated by calculating the adsorption term of continuity equation.
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Acknowledgments
This work was carried out with funding from Kuwait University.
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Nomenclature
- CFD
-
Computational fluid dynamics
- HVAC
-
Heating, ventilation and air conditioning
- HPSH
-
Harvard School of Public Health
- IAQ
-
Indoor air quality
- μg/m3
-
Micrograms per cubic meter
- mg/m3
-
Milligrams per cubic meter
- NMSE
-
Normalized mean square error
- PM2.5
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Particulate matter of diameter of 2.5 micro meters or less in size
- RANS
-
Reynolds averaged Navier–Stokes equations
- SHS
-
Secondhand smoking
- SOP
-
Standard operating procedure
- THS
-
Thirdhand smoke
- TKE
-
Turbulent kinetic energy
- ε
-
Dispassition of turbulent kinetic energy
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Al-sarraf, A.A., Yassin, M.F. & Bouhamra, W. Experimental and computational study of particulate matter of secondhand smoke in indoor environment. Int. J. Environ. Sci. Technol. 12, 73–86 (2015). https://doi.org/10.1007/s13762-013-0414-x
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DOI: https://doi.org/10.1007/s13762-013-0414-x