Particle and Aerosol Research
Vol. 12, No. 4, December 2016, Pages 135-143
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ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
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Numerical Analysis on Removal Efficiency of Water Droplets in a Curved Vane Mist Eliminator with Consideration of Evaporation and Condensation at Surface of Droplets
Dong Keun Song
Department of Eco-Machinery Systems, Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials
*Corresponding author.
Tel.: +82-42-868-7271, E-mail: dksong@kimm.re.kr
Received 11 November 2016, Revised 21 December 2016, Accepted 25 December 2016, Available online 05 January 2017
http://dx.doi.org/10.11629/jpaar.2016.12.31.135
Abstracts
Removal of water contents in a gas is needed in industrial field of gas processing related on energy production/conversion, and environmental treatment. Inertial separators are economic devices for separating droplets from the gas stream. For accurate understanding of removal process in a curved vane mist eliminator, a numerical model including turbulent dispersion, evaporation and condensation of water vapor at surface of droplets is required. A two-stage curved vane mist eliminator has been modeled, and fluid flow of mixture of air and water vapor and droplet trajectories were solved simultaneously with taking into account two-way coupling. Removal efficiency of droplets with various inlet condition of relative humidities (RH, 40%, 90%, and 100%) were compared. As RH increased, the effect of evaporation decreased and inertial separation efficiencies of droplets obtained increased especially for droplets of diameter below 10 micrometers.
Keywords
Curved vane mist eliminator, Removal efficiency, Water droplet, Evaporation, Condensation, CFD
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