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A platform for research: civil engineering, architecture and urbanism
Condensation of flue gas vapours in ducts and chimneys
Abstract The growth of a single dust particle by vapour condensation is derived from Fick's diffusion equation after considering the conditions under which it may be used. The treatment is then extended to a polydisperse dust cloud, allowing for (1) a constant cooling rate (2) the depletion of the vapour by condensation (3) the dependence of droplet vapour pressure on curvature and (4) the variation of the diffusion coefficient with droplet size. The general expression obtained for the radial growth of aerosol particles is suitable for numerical integration by computer, and has been applied to the flue gas of an oil-fired power station in the case when the sulphuric acid dewpoint is reached within the chimney. It is shown that, under typical power station operating conditions, the rate of condensation by heterogeneous nucleation is sufficiently fast to maintain the flue gas in the chimney at a low degree of supersaturation, for which condensation by self-nucleation is unlikely.
Condensation of flue gas vapours in ducts and chimneys
Abstract The growth of a single dust particle by vapour condensation is derived from Fick's diffusion equation after considering the conditions under which it may be used. The treatment is then extended to a polydisperse dust cloud, allowing for (1) a constant cooling rate (2) the depletion of the vapour by condensation (3) the dependence of droplet vapour pressure on curvature and (4) the variation of the diffusion coefficient with droplet size. The general expression obtained for the radial growth of aerosol particles is suitable for numerical integration by computer, and has been applied to the flue gas of an oil-fired power station in the case when the sulphuric acid dewpoint is reached within the chimney. It is shown that, under typical power station operating conditions, the rate of condensation by heterogeneous nucleation is sufficiently fast to maintain the flue gas in the chimney at a low degree of supersaturation, for which condensation by self-nucleation is unlikely.
Condensation of flue gas vapours in ducts and chimneys
Jarman, R.T. (author) / de Turville, C.M. (author)
Atmospheric Environment ; 17 ; 1837-1844
1982-08-31
8 pages
Article (Journal)
Electronic Resource
English
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