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이철형(Lee Chul-Hyung),박완순(Park Wan-Soon) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
The propeller type hydro turbine model with vertical axis has been tested and analized. The blade angle of runner of turbine model were designed to be varied according to the condition of head and flowrate. When the changes in head and output were comparatively large, the efficiency drop were small, so the efficiency characteristics and stability of the entire operating condition were maintained in good condition. These results showed that the developed model in this study will be suitable for small hydro power stations with large changes in head and load such as sewage treatment plants and agricultural reservoirs.
박완순(Park, Wan-Soon),이철형(Lee, Chul-Hyung) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.10
The propeller type hydro turbine model with vertical axis has been tested and analized. The blade angle of runner of turbine model were designed to be varied according to the condition of head and flowrate. When the changes in head and output were comparatively large, the efficiency drop were small, so the efficiency characteristics and stability of the entire operating condition were maintained in good condition. These results showed that the developed model in this study will be suitable for small hydro power stations with large changes in head and load such as sewage treatment plants and agricultural reservoirs.
캠버각 변화에 따른 소수력 축류 프로펠러 수차의 유동 특성 연구
변순석(Byeon, Sun-Seok),김태윤(Kim, Tae-Youn),한상목(Han, Sang-Meok),김정환(Kim, Jeong-Hwan),김윤제(Kim, Youn-Jea) 한국신재생에너지학회 2012 신재생에너지 Vol.8 No.2
The aim of this paper is to examine the hydraulically optimized camber of a blade. Prior studies have tried to determine the sound method of design on small-hydro turbines. These have appeared to realize a reasonably efficient small-hydro turbine. Nonetheless, specific and accurate design data have not as yet been established for the shape of the runner blade. Hence, this study examines the performance characteristic of an axial propeller turbine with 0~8% camber variations. The results of output power, efficiency, and pressure distribution of the turbine are graphically depicted. The definition of camber refers to the NACA airfoil. The commercial finite element analysis (FEA) packages, ANSYS, and CFX are used in this study. The results revealed the performance characteristics on small-hydro turbine and suggested a highly efficient section shape of the runner.
프로펠러 수차 간극과 피치각 변화에 따른 내부 유동 특성 비교
변순석(S.-S. Byeon),홍창기(C.-K. Hong),김윤제(Y.-J. Kim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
This article aims to numerically investigate the effects of active flow from the blade tip platform. In addition, the another independent variable is considerable modification of the exit blade tip angles. Using the free vortex theory, and operating with a gross head from 3.5m, the effect of the exit blade tip angles was investigated. It further presented theoretical methodology to analyze the effects of design parameters like the exit blade tip angles and a tip clearance. This paper describes the blade design of an axial propeller hydraulic turbine, and presented the relationship between the layout of the blade profile and the shaft power and efficiency. The results showed that the exit tip modification and tip clearance modification were decreased a significant drop of turbine efficiency about 3~13%.