International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Flow Analysis in Positive Displacement Micro-Hydro Turbine and Development of Low Pulsation Turbine

  • Kurokawa, Junichi (Faculty of Engineering, Yokohama National University) ;
  • Matsui, Jun (Faculty of Engineering, Yokohama National University) ;
  • Choi, Young-Do (Industry-Academic Cooperation Foundation, Korea Maritime University)
  • Received : 2008.07.28
  • Accepted : 2008.09.08
  • Published : 2008.08.01
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Abstract

In order to extract micro hydropower in the very low specific speed range, a Positive Displacement Turbine (PDT) was proposed and steady performance was determined experimentally. However, the suppression of large pressure pulsation is inevitable for practical application of PDT. The objective of the present study is to reveal the mechanism and the characteristics of pressure pulsation in PDT by use of CFD and to suppress the pressure pulsation. Unsteady CFD analysis has revealed that large pressure pulsation is caused by large variation of rotational speed of the following rotor, while the driving rotor, which is output rotor, keeps constant speed. Here is newly proposed a 4-lobe helical type rotor which can reduce the pressure pulsation drastically and the performance prediction of new PDT is determined.

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References

  1. Harvey, A., Brown, A., Hettiarachi, P. and Inversin, A., 2005, Micro-Hydro Design manual – A guide to Small-Scale Water Power Schemes, ITDG Publishing, UK.
  2. Davis, S., 2003, Microhydro : Clean Power from Water, New Society Publisher, Canada.
  3. Thake, J., 2000, The Micro-Hydro Pelton Turbine Manual, ITDG Publishing, UK.
  4. Khennas, S. and Barnett, A., 2000, “Best Practices for Sustainable Development of Micro hydro Power in Developing countries,” Report for The Department for International Development, UK and The World Bank (Contract R7215), The Schumacher Centre for Technology and Development, UK.
  5. Dhanapala, K. and Wijayatunga, P., 2002, “Economic and Environmental Impact of Micro-Hydro- and Biomass-Based Electricity Generation in the Sri Lanka Tea Plantation Sector,” Energy for Sustainable Development, Vol. VI, No. 1, pp. 47-55. https://doi.org/10.1016/S0973-0826(08)60298-7|
  6. Phommachanh, D., Kurokawa, J., Choi, Y-D. and Nakajima, N., 2006, “Development of a Positive Displacement Micro-Hydro Turbine,” JSME Internatinal Journal, Series B, Vol. 49, No. 2, pp.482-489. https://doi.org/10.1299/jsmeb.49.482
  7. The Japan Fluid Power System Society, 2003, Hydraulic Pressure Drive Text Book (in Japanese).
  8. ANSYS Inc., 2004, ANSYS CFX Documentation Ver.5.7.1.

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