This paper describes results of a systematic wind tunnel study aimed at development of the wind-operated irrigation system suitable for meeting needs of small farms in Indonesia. Using several models of the single-stage Savonius configuration, influence of the blade gapsize and overlap on the output is assessed and their favourable combination established for a given blade geometry. This is followed by the performance data on a larger, self-starting, two-stage model operating in conjunction with several different pumps. Results suggest that the two-stage configuration with a projected blade area of 1.12 m2 is capable of delivering 250 L/hr to a head of 4 m at a windspeed of around 16 km/hr using a gear pump. The performance appears quite promising, and a prototype is being designed to meet the objective. A preliminary study aimed at load matching through the generator field control is in progress.
Blade Configurations and Performance of the Savonius Rotor With Application to an Irrigation System in Indonesia
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Modi, V. J., Roth, N. J., and Pittalwala, A. (August 1, 1983). "Blade Configurations and Performance of the Savonius Rotor With Application to an Irrigation System in Indonesia." ASME. J. Sol. Energy Eng. August 1983; 105(3): 294–299. https://doi.org/10.1115/1.3266381
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