Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Relationship between the Outer Vortex and the Collection Efficiency with respect to Temperatures in the Cyclone Dust Collector

사이클론 집진장치의 내부온도에 따른 외부 소용돌이와 집진효율의 관계

  • Hyun, Daegeun (Environmental Aerosol Engineering Laboratory, Department of Environmental Engineering, Yeungnam University) ;
  • Chang, Hyuksang (Environmental Aerosol Engineering Laboratory, Department of Environmental Engineering, Yeungnam University)
  • 현대근 (영남대학교 환경공학과 환경에어로졸공학연구실) ;
  • 장혁상 (영남대학교 환경공학과 환경에어로졸공학연구실)
  • Received : 2015.06.12
  • Accepted : 2015.07.02
  • Published : 2015.06.30
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Abstract

This study compares the results of collection efficiency of difference gas temperature in cyclone dust collector. The previous researcher's experiment results were used to confirm the reliability of CFD(Computational Fluid Dynamics) model. Based on this verified CFD model, we extended the analysis on the cyclone dust collectors. In CFD study, we used RNG k-epsilon model for analysis of turbulence flow, fluid is air, the velocity at inlet is 10 m/s, the temperature of air is $20^{\circ}C$, $100^{\circ}C$, $200^{\circ}C$, $300^{\circ}C$, $600^{\circ}C$ and $1000^{\circ}C$. As the temperature decreases, the average velocity of outer vortex and collection efficiency is increased, showed the highest collection efficiency at $20^{\circ}C$. It can be inferred smooth flow in cyclone dust collector is difficult because air viscosity increases as temperature increases. The power required at $1000^{\circ}C$ is almost 18 times greater than that of $20^{\circ}C$ to get the similar collection efficiency.

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