Research Article
Year 2018,
Issue: 4, 203 - 211, 04.12.2018
Abstract
Efficiency and power
improvement of cross-flow turbines harnessing rivers and ocean water energy is
a key issue. Therefore, in this paper, we present the results of an experimental investigation on the effects of the blades orientation on
a cross-flow water turbine
performance. Four similar test models (same dimensions and blades) bur for different blades orientation angle i = 1.75 °, 4.5 °, - 1.75 ° and - 4.5 ° have been tested to evaluate the
performance of this vertical axis water turbine (VAWT), for several water flow velocities V varying from
0.3 to 0.59 m/s, which correspond to a water free flow Reynolds number of 2.08 104 to 4.36 104. An analysis of these
experimental results has shown that the best performance (biggest power and
power coefficient) was obtained for the test model with its blades orientation
angle set to 1.75 ° and the worst performance was given for the test model blades
orientation of -4.5 °. A comparison of the present results with those obtained in a
previous experimentation for a similar test model but with i = 0 °, has shown that the test model with its blades orientation angle fixed to
1.75 °, furnished relative increases of optimum mechanical power and of
corresponding power coefficient respectively as much as 82 % and 67 % with
respect to the results for i = 0 °, at a flow velocity equal to 0.37 m/s.
While, the test model, with negative angle of -4.5 °, gave smaller generated
power and power coefficient with corresponding relative decreases of about 49 %
and 36 % with respect to those obtained for the test model with its blades
fixed at 0 °.
References
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Year 2018,
Issue: 4, 203 - 211, 04.12.2018
Abstract
References
- Benzerdjeb A., Abed B., Hamidou M. K., Bordjane M. & Gorlov A. G. (2017) Experimental study on the effect of water velocity on the performance of a Darrieus turbine, International Journal of Renewable Energy Research, 7(4), 2011-2019. Bertin J. & Smith M. L. (1998) Aerodynamics for engineers, Prentice-Hall International, Inc., Simon & Schusler / A Viacom Company, Upper Saddle River, New Jersey. Cocina V., Leo P. D., Pastorelli M. & Spertino F. (2015, November 22-25) Choice of the most suitable wind turbine in the installation site: a case study, 4th International Conference on Renewable Energy Research and Applications, (pp. 1631-1634), Palermo, Italy. Faure T. D. (1984) Experimental results of a Darrieus type vertical axis rotor in a water current. -National Research Council of Canada, TR-NY-005. Kaprawi S., Santoso D. & Sipahutar R. (2015) Performance of combined water turbine Darrieus-Savonius with two stage Savonius buckets and single deflector, International Journal of Renewable Energy Research, 5(1), 217-221. Maître T., Amet E., C. Pellone, (2013). Modeling of the flow in a Darrieus water turbine: Wall grid refinement analysis and comparison with experiments, Renewable Energy, 51, 497-515. Moranchel M., Bueno E. J., Rodriguez F. J. & Sauz I. (2013, October 20-23). Transmission of electric energy from wave farm to onshore grid, 3rd International Conference on Renewable Energy Research and Applications (pp. 897-901), Madrid, Spain. Paillard B., Hauville F. & Astolfi J.A. (2013) Simulating variable pitch crossflow water turbines: a coupled unsteady ONERA-EDLIN model and stream tube model, Renewable Energy, 52, (pp. 209-217). Ploesteanu C., Tarziu D. & Maitre T. (2003, Mars 10-12). Modélisation de l’écoulement dans une turbine Darrieus à nombre de Reynolds modéré, 9èmes Journées de l’Hydrodynamique, Poitiers-Futuroscope, France. Rus T., Rus L.F., Abrudan A., Domnita F. & Mare R. (2016) Experimental tests in equipping vertical axis Wind Turbine with electric generator, International Journal of Renewable Energy Research, 6(2), 465-471. Sanusi A., Soeparman S., Wahyudi S. & Yuliati L. (2016) Experimental study of combined blade Savonius wind turbine, International Journal of Renewable Energy Research, 6(2), 614-619. Shahinur Md. I., Sabuj D. G., Shah Md. M., Nazmul I. R. & Ashraful S. K. (2013) Potentiality of small-scale hydro power plant using the kinetic energy of flowing water of Gumoti & Surma river of Bangladesh: An energy odyssey, International Journal of Renewable Energy Research, 3(1), 172-179. Takaoka N. & J. I. Itoh, (2015, November 22-25). Battery energy storage system with isolated dingle-phase matrix converter using ceneter_tapped transformer for power decoupling capability, 4th International Conference on Renewable Energy Research and Applications (pp. 574-578), Palermo, Italy. Thyagaraj J., Rahamathullah I. & Suresh Prabu P. (2016). Experimental investigations on the performance characteristics of a modified four bladed Savonius hydro-kinetic turbine, International Journal of Renewable Energy Research, 6(4), 1530-1536. Vaezi M. & Izadian A., (2014, October 19-22). Energy storage techniques for hydraulic wind power systems, 3rd International Conference on Renewable Energy Research and Applications, (pp. 897-901), Milwaukee, USA. Vieira R. J. A. & Sanz-Bobi M. A. (2015, November 22-25) Power curve modeling of a wind turbine for monitoring its behavior, 4th International Conference on Renewable Energy Research and Applications, (pp. 1052-1057), Palermo, Italy.
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Details
| Primary Language | English |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | December 4, 2018 |
| Published in Issue | Year 2018Issue: 4 |
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