Aerosol particles, how do I calculate this?

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SUMMARY

The calculation of the settling time for aerosol particles with an average diameter of 5 μm and a density of 1000 kg/m³ in a room measuring 20 m² in floor area and 3.5 m in height results in a total deposition time of 1 hour and 20 minutes. This conclusion is based on the principles of dry deposition and the specific physical properties of the aerosol particles. The discussion emphasizes the importance of using the correct formulas and parameters for accurate results in such calculations.

PREREQUISITES
  • Understanding of aerosol physics and particle dynamics
  • Familiarity with dry deposition concepts
  • Knowledge of basic geometry for volume and area calculations
  • Proficiency in using relevant formulas for settling time calculations
NEXT STEPS
  • Research the Stokes' Law for calculating settling velocities of particles
  • Explore the impact of particle size and density on deposition rates
  • Learn about the effects of air turbulence on aerosol behavior
  • Investigate methods for measuring aerosol concentration in indoor environments
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Environmental scientists, atmospheric researchers, and professionals involved in indoor air quality assessments will benefit from this discussion.

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TL;DR
Aerosol particles with an average diameter of 5 μm and a density of 1000 kg / m3 are spread to a room with a floor area of 20 m2 and a height of 3.5 m. How long does it take for all 5 μm particles to settle on the floor (dry deposition)?
Aerosol particles with an average diameter of 5 μm and a density of 1000 kg / m3 are spread to a room with a floor area of 20 m2 and a height of 3.5 m. How long does it take for all 5 μm particles to settle on the floor (dry deposition)? The answer should be 1 hour and 20 minutes.
 
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Please use the appropriate homework section and template for this. Thanks. Thread closed.
 

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