Performance Improvement of a Micro Eco Cross-Flow Hydro Turbine
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초록
This study is aimed to develop a new type of micro cross-flow hydro turbine which has very simple structure and relatively high efficiency. Micro eco cross-flow hydro turbine (ECFT) is proposed to apply in the ranges of very low and middle specific speeds in order to extend the operational range of the turbine. In order to not only obtain a basic data for a new design method of ECFT but also improve the turbine efficiency, experiments and CFD analysis on the performance and internal flow characteristics of the turbine model are conducted. According to the present study results, anti-recirculation block (ARB) and relatively wide turbine width with high flow rate improve the turbine efficiency.
Abstract
This study is aimed to develop a new type of micro cross-flow hydro turbine which has very simple structure and relatively high efficiency. Micro eco cross-flow hydro turbine (ECFT) is proposed to apply in the ranges of very low and middle specific speeds in order to extend the operational range of the turbine. In order to not only obtain a basic data for a new design method of ECFT but also improve the turbine efficiency, experiments and CFD analysis on the performance and internal flow characteristics of the turbine model are conducted. According to the present study results, anti-recirculation block (ARB) and relatively wide turbine width with high flow rate improve the turbine efficiency.
참고문헌 (7)
- Turbomachinery Society of Japan, "Hydro Turbine" (2007), Japan Industrial Publishing Co., Ltd
- K. Kokubu, "Internal flow analysis on a micro cross-flow type hydro turbine at very low specific speed range", Proceedings of the 11th Asian International Conference on Fluid Machinery, (195) (2011)
- J. Thake, "The Micro-Hydro Pelton Turbine Manual" (2000), ITDG Publishing
- K. Kokubu, "Effects of inner guide on performances of cross flow turbine", Proceedings of 26th The International Association for Hydro-environment Engineering and Research Symposium on Hydraulic Machinery and Systems, paper no. 198 (2012)
- Young-Do Choi, "Air Layer Effect on the Performance Improvement of a Cross-Flow Hydro Turbine", 한국유체기계학회 논문집, 13(4), pp.37~43 (2010), 한국유체기계학회
- "ANSYS CFX Documentation, ver. 12" (2010)[URL]
- Y.-D. Choi, "Performance and internal flow characteristics of a cross-flow hydro turbine by the shapes of nozzle and runner blade", Journal of Fluid Science and Technology, 3(3), pp.398~409 (2008)