Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Prediction of Injection Distances for the Minimization of the Pressure Drop by Empirical Static Model in a Pulse Air Jet Bag Filter

충격기류식 여과집진기에서 경험모델을 이용한 최소압력손실의 분사거리 예측

  • Suh, Jeong-Min (Department of Regional Environmental System Engineering, Pusan National University) ;
  • Park, Jeong-Ho (Department of Environmental Engineering, Jinju National University) ;
  • Lim, Woo-Taik (Department of Applied Chemistry, Andong National University)
  • 서정민 (부산대학교 지역환경시스템공학과) ;
  • 박정호 (진주산업대학교 환경공학과) ;
  • 임우택 (안동대학교 응용화학과)
  • Received : 2010.08.23
  • Accepted : 2010.11.25
  • Published : 2011.01.31
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Abstract

The new empirical static model was constructed on the basis of dimension analysis to predict the pressure drop according to the operating conditions. The empirical static model consists of the initial pressure drop term (${\Delta}P_{initial}$) and the dust mass number term($N_{dust}=\frac{{\omega}_0{\nu}_f}{P_{pulse}t}$), and two parameters (dust deposit resistance and exponent of dust mass number) have been estimated from experimental data. The optimum injection distance was identified in the 64 experimental data at the fixed filtration velocity and pulse pressure. The dust deposit resistance ($K_d$), one of the empirical static model parameters got the minimum value at d=0.11m, at which the total pressure drop was minimized. The exponent of dust mass number was interpreted as the elasticity of pressure drop to the dust mass number. The elasticity of the unimodal behavior had also a maximum value at d=0.11m, at which the pressure drop increased most rapidly with the dust mass number. Additionally, the correlation coefficient for the new empirical static model was 0.914.

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References

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