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http://dx.doi.org/10.7316/KHNES.2013.24.5.451

Evaluation on Light Scattering Behavior of a Pulverized Coal Suspension  

Hwang, Munkyeong (Graduate School of Mechanical Engineering Pusan Nat'l Univ.)
Nam, Hyunsoo (Graduate School of Mechanical Engineering Pusan Nat'l Univ.)
Kim, Kyubo (Pusan Clean Coal Center)
Song, Juhun (School of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.24, no.5, 2013 , pp. 451-460 More about this Journal
Abstract
In a direct coal fuel cell (DCFC) system, it is essential to identify volume fraction of coal suspended in electrolyte melt in order to control its dispersion and fluidity. This requirement is compelling especially at anode channel where hot slurry is likely to flow at low velocity. In this study, light scattering techniques were employed to measure the volume fraction for a pulverized coal suspension with relatively high absorption coefficient. The particle size, scattering angle, and volume fraction were varied to evaluate their effects on the scattering behavior as well as scattering regime. The larger coal size and smaller forward scattering angle could provide a shift to more favorable scattering regime, i.e., independent scattering, where interferences of light scattering from one particle with others are suppressed.
Keywords
DCFC; Coal suspension; Fluidity; Volume fraction; Light scattering; Scattering regime;
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