Topic
Savonius wind turbine
About: Savonius wind turbine is a research topic. Over the lifetime, 333 publications have been published within this topic receiving 6521 citations.
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22 Aug 2014TL;DR: In this article, the performance of the Bach-type Savonius wind turbine with a constant cross-section is examined by means of quasi 2D and 3D flow predictions obtained from ANSYS CFX.
Abstract: The performance of the Bach-type Savonius wind turbine with a constant cross-section is examined by means of quasi 2D and 3D flow predictions obtained from ANSYS CFX. Simulations were performed in a way allowing for a comparison with the wind tunnel data presented by Kamoji et al. The comparison with the experiment has revealed that 2D solutions give much higher deviation from the reference data than the 3D ones, which guarantees a good solution quality. It can be stated that even simplified (lack of laminar-turbulence transition modelling and a coarser mesh) 3D simulations can yield more accurate results than complex 2D solutions for turbines with a low aspect ratio. The paper also presents a systematic analysis of the most characteristic flow structures which are identified in the rotor.
11 citations
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TL;DR: In this paper, an innovative technique to enhance the performance of the Savonius wind turbine is presented, which is based on introducing an upstream deflector and downstream baffle to improve the performance.
Abstract: This work presents an innovative technique to enhance the performance of the Savonius wind turbine. The new technique is based on introducing an upstream deflector and downstream baffle. The shape ...
11 citations
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TL;DR: In this paper, the structural improvement information of Savonius wind turbine is summarized in order to provide useful knowledge for the researchers in the structural design and improvement of the wind turbine, which can bring huge differences in turbine performance, especially the differences in the maximum wind energy utilization (Cp-max) with different structure.
Abstract: This paper summarizes the research results of the structural parameters which have effects on the performance of Savonius wind turbine. Savonius wind turbine being used in wind power and tidal power belongs to vertical axis wind turbine (VAWT). Recently, more and more research have placed on it for its advantages such as: being able to accept wind from any direction, long fatigue life of the blades, high starting torque, wide working wind speed range, easy to install, manufacture and maintain and low noise etc. The performance of Savonius wind turbine is affected by many factors. Different structural parameters can bring huge differences in turbine performance. Especially the differences in the maximum wind energy utilization (Cp-max) can be more than 30% with different structure. Many new turbines get higher Cp-max by improving the structural parameters. In this paper, the structural improvement information of Savonius wind turbine is summarized in order to provide useful knowledge for the researchers in the structural design and improvement.
11 citations
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23 Apr 2019
TL;DR: In this article, a wind turbine is placed in front of the air conditioner blower, then the turbine is combined with the generator to convert residual wind from air conditioning to electrical energy again.
Abstract: Renewable energy is now a trending topic in research as a source of energy that free of pollution and alternative energy sources to substitute fossil energy sources. Research on renewable energy has always been developed to support energy security. Wind is one of the renewable energy sources that can be utilized to generate electrical energy. In this research will converting residual wind from air conditioning to electrical energy again. The advantage of using the exhaust from the air conditioning blower is that it has a relatively stable wind speed every time, although not as big as wind speeds available in nature. From the measurement with anemometer obtained the greatest wind speed is 6 m/s when its distance of 4 cm from the blower, and power of air conditioner 2,5 horsepower (HP) at temperature 16°C. Turbine can convert wind energy into electrical energy. The wind turbine is placed in front of the air conditioner blower, then the turbine is combined with the generator. Wind output from the blower is spread in all way, so made turbine type L Savonius. Generators used are a direct current generator (DC) and alternating current generator (AC). At the time testing, used Air Conditioner with power 0,5 HP, 1 HP, and 2,5 HP. In the test with air conditioner 0,5 HP obtained output voltage from the ac generator is 19,5 V and current is 0,65 A. Test using dc generator get output voltage is 35 V and the current is 0,37 A. In the test with air conditioner 1 HP obtained output voltage from the ac generator is 24 V and current is 0,52 A. Test using dc generator get output voltage is 37 V and current is 0,34 A. In the test with air conditioner 2,5 HP obtained output voltage from the ac generator is 24 V and current is 0,53 A. Test using dc generator get output voltage is 38 V and current is 0,34 A. Value of the output voltage of the generator is influenced by the amount of AC power consumption. Amount of voltage generated by the generator may can be used to turn on the surface-mount device light-emitting diode (SMD LED).
10 citations
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TL;DR: In this article, a two-dimensional parametric analysis of a modified Savonius wind turbine using computational fluid dynamics is presented, showing the effects of three independent parameters of the rotor.
Abstract: This article aims to present a two-dimensional parametric analysis of a modified Savonius wind turbine using computational fluid dynamics The effects of three independent parameters of the rotor,
10 citations