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합금 극세사 필터 엘리멘트 세정을 위한 세정조 내부유동 특성 연구
임재익(Lim Jae-Ik),유찬욱(Ryu Chan-Uk),박재현(Park Jea-Hyoun),최주형(Choi Joo-Hyoung),김정환(Kim Jeong-Hwan) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
The microfiber filter continued using filter's efficiency is degraded. The continued use of filters to remove contaminants through a cleaning. In this study a wash trough fluids flow inside the inlet for the efficient mixing of the location were investigated. The inlet and outlet of the Wash trough internal filter change intervals depending on the position of the flow analysis was performed.
임재익(Jea-ik Lim),최영도(Young-do Choi),김유택(You-taek Kim),김정환(Jeong-hwan Kim),이영호(Young-ho Lee) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
The renewable energy is necessary because of environmental matter that it is like greenhouse effect. Therefore, the clean energy cause renewable energy is developed. In renewable energy, the small hydropower generate a few CO₂ and it is an energy where the energy density is high. In my country, the turbine-generator development which is a focus of hydroelectric power system is insufficient and the development against it is necessary. Also the localization and standardization of the turbine are important. The standardization is easy because of structure of cross-flow turbine is simple. It is able to use in a lot of flow fluctuation. Becomes the strong point in application of cross-flow turbine. In the study, it compares a performance test to 80㎾ CFD calculation result of cross-flow turbine and it investigated an inside flow and an efficiency with CFD analysis.
유동해석을 통한 LNG선용 고정밀 Averaging Pitot Tube 유동성능 연구
임재익(Lim Jea-Ik),박재현(Park Jea-Hyoun),김정환(Kim Jeong-Hwan),배병덕(Bae Byeong-Deok),차지협(Cha Ji-Hyeop) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
This study analysis to the various shape of High precision Averaging Pitot tube, we confirm the results to a circular shape the most suitable to the High precision Averaging Pitot tube.
임재익(Jea-ik Lim),최영도(Young-do Choi),전상규(Sang-gyu Jeon),김유택(You-tack Kim),이영호(Young-ho Lee) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-
A lot of countries are trying for small hydro power utilization that is clean source of energy as environmental problem is weighed and necessity of renewable energy utilization becomes serious. Try in technical development continuously in domestic and develops some hydro turbine and improved a technology but in the case of water-turbine generator development, our country that is point of decimal power development system, season, because different flux change is big, need development of suitable hydro turbine there. Localization and standardization of hydro turbine become important problem. So, easy of standardization by simple structure and flux fluctuation of cross-flow hydro turbine is point that application is possible in large place act by big advantage in application of sale through illegal channels hydro turbine. The purpose of this study is the variation of runner angles to improve the performance. Optimization of the turbine structure has been made by the analysis of the turbine performance with the variation of the runner angle using a commercial CFD code. The results show that inlet and outlet runner angles give considerable effect on the performance of the turbine.
임재익(Jea-Ik Lim),최영도(Young-Do Choi),임우섭(Woo-Seop Lim),김유택(You-Taek Kim),이영호(Young-Ho Lee) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
Recently, small hydropower attracts attention because of its clean, renewable and abundant energy resources to develop. However, suitable turbine type is not determined yet in the range of small hydropower and it is necessary to study for the effective turbine type. Moreover, relatively high manufacturing cost by the complex structure of the turbine is the highest barrier for developing the small hydropower turbine. Therefore, a cross-flow turbine is adopted because of its simple structure and high possibility of applying to small hydropower. The purpose of this study is to examine the optimum configuration of nozzle shape to further optimize the cross-flow hydraulic turbine structure and to improve the performance. The results show that pressure on the runner blade in Stage 1 and velocity at nozzle outlet have close relation to the turbine performance.