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축상 유입식 사이클론의 최적 설계를 위한 수치해석적 연구
신해중(H.J. Shin),이윤우(Y.W. Lee),박종환(J.H. Park),김지훈(J.H. Kim),이치우(C.W. Lee),장성철(S.C. Jang) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
For optimum design of axial-vane type cyclone, a number of vane, degree of an angle, inlet velocity and length of vortex finder should be decided, and 50% cut diameter can be calculated from tangential velocity. In this paper, tangential velocity in cyclone and it's pressure drop were predicted by using CFD(Computational fluid dynamics) method. The simulation results are in general good agreement with empirical knowledge. Especially, less and less degree of an angle go into, 50% cut diameter was decreased and pressure drop was increased. As the number of vanes and length of vortex finder was increased, the fractional collection efficiency and pressure drop also increased. The 50% cut diameter decreases from 3.0㎛ to 1.2㎛ by structure of cyclone.
흡착제에 의한 금속가공공정에서의 휘발성 유기화합물 제거 특성
신해중(H.J. Shin),장영근(Y.G. Jang),정홍렬(H.R. Jeong),정순보(S.B. Jeong),정지혜(J.H. Jeong),이치우(C.W. Lee),장성철(S.C. Jang) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
In general, the metal working fluids (MWFs) are employed to improve the efficiency and precision of metal working processes. Unfortunately, these emissions of volatile organic compounds (VOCs) cause harmful health effects during the metal working processes. Therefore, the purpose of this study is to examine the effect of adsorbents on removal of VOCs. The results of the adsorption of toluene over several adsorbents (activated carbon, activated alumina and zeolites) were reviewed for the selection of a effective adsorbent. As a results, activated carbon filters have showed better performance toward toluene adsorption as compared to other adsorbents.
장성철(S. C. Jang),정완보(W. B. Jung),박래방(L. B. Park),조준호(J. H. Cho),신해중(H. J. Shin),이치우(C. W. Lee) 한국생산제조학회 2010 한국공작기계학회 추계학술대회논문집 Vol.2010 No.-
The purposes of using cutting fluid during cutting have been colling, lubricating, chip washing and anti-corroding. However, the present manufactaring industry restricts the use of cutting fluid because cutting fluid confains poisonous substances which are harmful to the human body. Also, the optimum design oil-mist collector. Finally, the new oil mist collector was designed. In the near future, this device must be tested in the real machining center and CNC machine.
장성철(S. C. Jang),정완보(W. B. Jung),박래방(L. B. Park),조준호(J. H. Cho),신해중(H. J. Shin),이치우(C. W. Lee) 한국생산제조학회 2010 한국생산제조시스템학회 학술발표대회 논문집 Vol.2010 No.10
The purposes of using cutting fluid during cutting have been colling, lubricating, chip washing and anti-corroding. However, the present manufactaring industry restricts the use of cutting fluid because cutting fluid confains poisonous substances which are harmful to the human body. Also, the optimum design oil-mist collector. Finally, the new oil mist collector was designed. In the near future, this device must be tested in the real machining center and CNC machine.