Blade Configurations and Performance of the Savonius Rotor With Application to an Irrigation System in Indonesia

Abstract

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.

Analyzing the Impact of a Curved Stator on the Performance of a Savonius Wind Turbine using Computational Fluid Dynamics

“…INTRODUCTION 1 As fossil fuels continue to decrease, leading to an energy crisis, the demand for sustainable energy sources is *Corresponding Author Email: aramiar@nit.ac.ir (A. Ramiar) growing. In the past decade, there has been a push for immediate and effective solutions to the climate of world challenges.…”

“…The Savonius rotor has various uses, such as powering an electric generator, ventilating spaces, and stirring water to prevent the formation of ice in pools during the winter months. These applications have been explored in previous research (1,2). Initial research has demonstrated promising starting characteristics for twisted blades.…”

Performance Analysis of a Helical Savonius Wind Turbine with Modified Rotor

“…The Savonius rotor can be used for pumping water, driving an electrical generator and agitating the water to keep stock ponds ice-free during the winter. It can be used in buildings for heating, ventilation, and air-conditioning (HVAC) purposes, [5,6].…”

Valve-Aided Twisted Savonius Rotor

“…The geometric factors that influence the performance of the Savonius rotor are aspect ratio, separation gap, overlap, end/deflecting plates, shielding, and number of blades [1][2][3][4][5][6]. It has been found from investigation that shielding the returning blades of the rotor reduces the negative torque drastically, yet at the expense of complexity, since the shielding must be placed with regard to the direction of the wind.…”