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고경남,강문종,허종철,Ko, Kyung-Nam,Kang, Mun-Jong,Huh, Jong-Chul 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.1
This paper reveals both the operational situation and the cause of the error occurred in wind turbine generator system of Hangwon wind farm in Jeju island. The four wind turbines were selected for this work, and the monitored period was for six months. Wind resource in the wind farm was analyzed, and the estimated energy production was compared with the actual energy production. As a result, with a decrease of system error, the estimated energy production was in good agreement with the actual energy production. The errors occurring in components such as gearbox and hydraulic motor affected the Availability of the wind turbine. Also, poor external conditions such as a strong wind, lightning and gust caused a standstill of wind turbines.
박진욱,이철형,박완순,허종철,Park, Jin-Wook,Lee, Chul-Hyung,Park, Wan-Soon,Huh, Jong-Chul 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.2
The performance of in-line duct fan depends on the design parameters of impeller and guide vane such as sweep back angle of impeller hub, guide vane angle etc. In this study four kinds of impellers having different sweep back angles, $0^{\circ}$, $17.5^{\circ}$, $35^{\circ}$, $52.5^{\circ}$ with 8 guide vanes, and different guide vane angles, $15^{\circ}$, $30^{\circ}$, $45^{\circ}$ were selected and their performance measured to investigate the effects of design parameters. The results show that both sweep back angle of impeller hub and the guide vane angle have large effect on the efficiency. Especially, it was found that the mixed flow impellers having sweep back angle between $17.5^{\circ}$ and $35^{\circ}$ gave good performances for in-line duct fan.
혼류형 팬의 설계변수가 성능에 미치는 영향에 대한 실험적 연구
박진욱(Jin-Wook Park),허종철(Jong-Chul Huh),이철형(Chul-Hyung Lee),박완순(Wan-Soon Park) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
This study aims to analyze the effects of design parameters of mixed-flow fans. The eight kinds of mixed impellers with backward curved blades, which have four different back swept angles of hub plate, were selected. The impellers having exit blade angle of 45˚ and the range of 6 to 12 for number of blades were designed. The three kinds of casing having different guide vane angles were selected and organized with impellers to evaluate the performance of mixed-flow fans.