New PDF release: Aerosol Measurement: Principles, Techniques, and

By Pramod Kulkarni, Paul A. Baron, Klaus Willeke

ISBN-10: 0470387416

ISBN-13: 9780470387412

Aerosol size: ideas, ideas, and purposes 3rd version is the main specified therapy to be had of the most recent aerosol size tools. Drawing at the information of various specialist participants; it presents a great clutch of size basics and practices a large choice of aerosol applications.

This re-creation is up-to-date to handle new and constructing functions of aerosol dimension, together with purposes in environmental future health, atmospheric technological know-how, weather swap, pollution, public health and wellbeing, nanotechnology, particle and powder expertise, pharmaceutical learn and improvement, fresh room know-how (integrated circuit manufacture), and nuclear waste management.

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Additional info for Aerosol Measurement: Principles, Techniques, and Applications

Example text

0665 mm. ) The slip correction factor can be determined from Equation 2-14 using constants for solid particles Cc ¼ 1 þ Kn[1:142 þ 0:558 exp (À0:999=Kn)] Cc ¼ 1 þ 2 Á 0:0665 mm 0:01 mm  Â 1:142 þ 0:558 exp À0:999 ! 0:01 mm ¼ 23:1 2 Á 0:0665 mm We then estimate the diffusion coefficient, using Equation 2-25. 2 Particle Diffusion D¼ Small particles can achieve significant diffusive motion in much the same manner as that described for gas molecules. The difference is only in the particle size and shape.

The partial pressure of vapor in a sealed chamber containing a liquid will eventually reach the vapor pressure of the liquid at the temperature of the container. The vapor pressure of water in kPa and mm Hg at a temperature T in K is given by   4060 kPa ps ¼ exp 16:7 À T À 37   4060 mm Hg (Eq. 3-1) ¼ exp 18:72 À T À 37 for T from 273 to 373 K. For aerosol condensation and evaporation processes, it is the ratio of the partial pressure of vapor to the saturation vapor pressure that is important.

3 kPa) Gas Air Ar He H2 CH4 C2H6 i-C4H10 N2O CO2 h (1026 Pa . 0432 Using these reference values for air, the average velocity can be estimated for other gases and temperatures as follows.  1=2 1=2 T Mr V ¼ Vr (Eq. 2-9) M Tr Mean free path, l, is the mean distance a molecule travels before colliding with another molecule. 0664 mm. The mean free path is an abstraction that is determined from a kinetic theory model that relates it to the coefficient of viscosity. Using these reference values, l is determined for other pressures and temperatures (Willeke 1976).

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Aerosol Measurement: Principles, Techniques, and Applications by Pramod Kulkarni, Paul A. Baron, Klaus Willeke

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