• 제목/요약/키워드: Cyclone Separator

검색결과 50건 처리시간 0.022초

반응표면법을 활용한 축류형 사이클론 구조 최적화 설계에 관한 연구 (A Study on Optimum Design of an Axial Cylcone structure using Response Surface Method)

  • 조진일;윤준호;조영광;석현호;김태성
    • 한국입자에어로졸학회지
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    • 제17권3호
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    • pp.71-79
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    • 2021
  • Ultrafine dust, which is emitted from industrial factories or all kinds of vehicles, threatens the human's respiratory system and our environment. In this regard, separating airborne particles is essential to mitigate the severe problem. In this work, an axial cyclone for the effective technology of eliminating harmful dust is investigated by numerical simulation using Ansys 2020, Fluent R2. In addition, the optimized structure of the cyclone is constructed by means of multi objective optimization based on the response surface method which is a representative method to analyze the effect of design parameter on response variables. Among several design parameters, the modified length of the vortex finder and dust collector is a main point in promoting the performance of the axial cyclone. As a result, the optimized cyclone exhibits remarkable performance when compared to the original model, resulting in pressure drop of 307 Pa and separator efficiency of 98.5%.

3D 프린팅을 적용한 미니 하이드로 싸이클론 분리기의 질량유량을 통한 분리효율 해석 및 평가 (Analysis and Evaluation of Separation Efficiency on Mass Flow of Mini Hydro Cyclone Separator Manufactured by 3D Printing)

  • 이형욱;이여울;이명원;권제영;강명창
    • 한국기계가공학회지
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    • 제20권7호
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    • pp.89-96
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    • 2021
  • In this study, a mini hydro cyclone was designed and manufactured to achieve an inlet flow rate of 2 L/min in the experiment, which was conducted using alumina powder with a specific gravity of 3.97. This hydro cyclone was studied for using in steam and water analysis system (SWAS) of thermal power plant and was manufactured by 3D printing. Numerical analysis was performed with Solidworks Flow Simulation, utilizing the reynolds stress method (RSM) of fluid multiphase flow analysis models. Experimental and numerical analysis were performed under the three conditions of inlet velocity 2.0, 4.0, and 6.0 m/s. The separation efficiency was over 80% at all inlet velocity conditions. At the inlet velocity 4m/s, the separation efficiency was the best, and it was confirmed that the efficiency was more than 90%.

축상유입식 사이클론 집진기 성능시험에 관한 연구 (A Study on the Performance Test of Axial-flow Cyclone Separator)

  • 진도훈
    • 한국산업융합학회 논문집
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    • 제23권1호
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    • pp.101-106
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    • 2020
  • Along with dust collection efficiency, pressure loss is a very important cyclone operation factor. A severe rise in pressure loss causes the problem of cost. To solve the problem, the method connecting axial-vane type cyclones in parallel is suggested recently. The axial vane type cyclone dust collector applied in this study is a small portable type. Multiple cyclones are installed in a round type. The basic performance test on the axial vane type cyclone dust collector was conducted. As a result, the cut size reduced along with a rise in the wind velocity of the cyclone dust collector inlet. According to the test on dust collection efficiency, the effect of dust collection began to appear in the range of 3㎛ and dust collection efficiency was greatly improved at 5 ㎛. The noise of the cyclone dust collector well met the fan sound power level of KSB 6361.

2단 선회류 약화기가 원심력집진기의 집진효율에 미치는 영향 (Effects of Two Stage Vortex Finder on the Particulate Collection Efficiency of Cyclone Separator)

  • 강순국;유경선
    • 한국대기환경학회지
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    • 제16권6호
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    • pp.633-640
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    • 2000
  • The effects of structure modification of the vortex finder on the collection efficiency and pressure drop have been investigated. The pressure drop in a cyclone having the two stage vortex finder is higher than that in a conventional cyclone and increases proportionally with the increase of square of gas inlet velocity in both cases. The pressure drop of both conventional cyclone of friction resistance at the boundary layer. The collection efficiency of fine dust has been enhanced by addition of vortex finder in a conventional cyclone and gas inlet velocity showing maximum dust removal efficiency increase to 17 m/s(1.7 times of saltation velocity). Optimum size of two stage vortex finder has been induced to 13 cm I.D$\times$2.6cm Length from the results of overall dust collection efficiency. Previous models were tested for the simulation of collection efficiency of cyclone having two stage vortex finder and the Dietz model predict the similar value with experimental results of the present study.

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사이클론 집진기의 벽면구배에 따른 압력손실과 컷-사이즈 변화 예측 모델 개발 (Development of prediction model for pressure loss and cut-size of cyclone separator depend on wall curvature)

  • 허광수;설승윤
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회B
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    • pp.2676-2681
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    • 2008
  • In previous studies, Convex cyclone are proposed to reduce pressure loss which are design cyclone wall with a single continuous curve. Studies about a prediction model for pressure loss and cut-size has focused on conventional cylinder-on-con cyclone. Therefore, the models do not perform well for uncommon design. In this study, a predict model for pressure loss and cut-size depend on cyclone wall curvature are developed. The tangential velocity below vortex-finder is obtained with consideration about friction area and momentum loss on the cyclone wall, and with this the variation of vortex-core and core velocity is obtained. Pressure loss is predicted using a Rankine vortex hypothesis. The prediction results are well agreed with experiments and CFD results.

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지하역사 공기조화기에 적용 가능한 미세먼지 제거용 사이클론의 수치해석적 연구 (CFD Analysis of Axial Flow Cyclone Separator for Subway Station HVAC System)

  • 김진관;김호중;김명준;김태성;권순박
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.546-550
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    • 2008
  • In this study, 3-dimensional Computational Fluid Dynamics (CFD) analysis was induced to simulate air flow and particle motion in the axial flow cyclone separator. The commercialized CFD code FLUENT was used to visualize pressure drop and particle collection efficiency inside the cyclone. We simulated 4 cyclone models with different shape of vane, such as turning angle or shape of cross section. For the air flow simulation, we calculated the flow field using standard ${\kappa}-{\varepsilon}$ turbulence viscous model. Each model was simulated with different inlet or outlet boundary conditions. Our major concern for the flow filed simulation was pressure drop across the cyclone. For the particle trajectory simulation, we adopted Euler-Lagrangian approach to track particle motion from inlet to outlet of the cyclone. Particle collection efficiencies of various conditions are calculated by number based collection efficiency. The result showed that the rotation angle of the vane plays major roll to the pressure drop. But the smaller rotation angle of vane causes particle collection efficiency difference with different inlet position.

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미립 물질 제거를 위한 소형 사이클론 분리기의 이론적 연구 및 실험적 검증 (Theoretical Analysis and Experimental Evaluation of Small Cyclone Separator to Remove Fine Particulate Matter)

  • 고한결;김홍석
    • 대한기계학회논문집A
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    • 제37권1호
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    • pp.77-82
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    • 2013
  • 사이클론 분리기는 제작이 쉽고, 경제적이며, 가혹한 환경에서도 사용이 가능하기 때문에 다양한 산업공정에서 미립 물질을 제거하기 위한 장비로 널리 활용되고 있다. 하지만 사이클론의 복잡한 유동 특성 때문에 입자를 분리하는 세부적인 메커니즘에 대한 이해는 아직 부족한 실정이다. 본 연구에서는 사이클론 분리기의 기하학적 특성과 유동 파라미터가 미치는 영향을 고려하여 사이클론의 분리효율과 절단입경을 계산하기 위한 이론적인 연구를 진행하였다. 이론적 모델을 통해 예측한 분리효율과 절단입경은 $0.5-30{\mu}m$의 입자에 대한 실험결과와 잘 일치하였다. 또한 사이클론의 성능은 기하학적 특성과 유동 파라미터 뿐 아니라 표면의 마찰특성에도 현저한 영향을 받는 것으로 확인되었다.

멀티사이클론을 이용한 진공청소기의 최적설계에 관한 연구 (Optimal Design of Vacuum Cleaner with a Multi Cyclone)

  • 하건호;김응달;양병선;안영철
    • 설비공학논문집
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    • 제23권2호
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    • pp.126-131
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    • 2011
  • Cyclone, a type of particle collector widely used in the field of ambient sampling and industrial particulate control, is the principal type of gas-solids separator that uses a centrifugal force. The goal of this study is to design and evaluate the cyclone that can be used for the household vacuum cleaners. A multi cyclone with a 1st cyclone and several 2nd cyclones is designed to improve dust collection efficiency. The dust collection efficiency and the suction power of 1st cyclone are evaluated. And the dust collection efficiency and the suction power of multi cyclone are evaluated according to various sizes of inlet and vortex finder. As a result, a cone shape porous filter has better dust collection efficiency than a cylinder shape porous filter. The dust collection efficiency of a multi cyclone is 3.5% greater than that of a single cyclone.