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Aerosol size: rules, suggestions, and functions 3rd variation is the main specified remedy to be had of the most recent aerosol size equipment. Drawing at the information of diverse professional individuals; it presents an excellent take hold of of size basics and practices a large choice of aerosol applications.
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Additional info for Aerosol Measurement: Principles, Techniques, and Applications
G. May. 1966. In Aerosol Science. C. N. ) London: Academic. Friedlander, S. K. 1977. Smoke, Dust and Haze. New York: John Wiley and Sons. Hesketh, H. E. 1977. Fine Particles in Viscous Media. Ann Arbor, MI: Ann Arbor Science Publishers. Hinds, W. C. 1999. Aerosol Technology. New York: John Wiley and Sons. Licht, W. 1988. Air Pollution Control Engineering: Basic Calculations for Particulate Collection. New York: Marcel Dekker. Mazumder, M. , R. E. Ware, J. D. Wilson, R. G. Renninger, F. C. Hiller, P.
Nucleation or nucleated condensation refers to the process of initial formation of a particle from vapor. This process is usually facilitated by the presence of small particles, called condensation nuclei, that serve as sites for condensation. Adsorption is the process whereby vapor molecules attach to solid surfaces. It is most important for porous solids, such as activated charcoal, that have large surface areas. Absorption refers to the process of vapor molecules transferring from the gas phase to the liquid phase.
For instance, such a particle might be released from a rotating grinding wheel. 3 Stokes Number When flow conditions change suddenly, as in case of the particle traveling toward the collection surface of an impactor, the ratio of the stopping distance to a characteristic dimension, d, is defined as the Stokes number, Stk. Vgrav ¼ tg S ¼ V0 t (Eq. 2-39) where S has units of distance. Values of S for an initial velocity of 10 m/s are given in Table 2-2. The concept of stopping distance is useful, for example, in impactors when EXAMPLE 2-5 A grinding wheel, used in a machine shop, dislodges many particles and projects them from the contact point toward the receiving hood of the ventilation system.