Optimal Design of Novel Blade Profile for Savonius Wind Turbines

Chang, Tai-Lin; Tsai, Shun-Feng; Chen, Chun-Lung

doi:10.3390/en14123484

Cited by 16 publications

(8 citation statements)

References 23 publications

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“…As reported in the Introduction, the demand for distributed renewable energy production from wind sources can also be met with the help of small-scale turbines installed over high buildings, and VAWTs are the best choice for wind energy exploitation in urban environment [1][2][3][4][5]. For wind energy potential assessment, numerical and laboratory simulations of urban boundary layer turbulence require a detailed description of geometric characteristics of the urban canopy in form of UCPs [16,17].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, renewable energies are becoming one of the most important research fields of our age. Among renewable energy sources, wind is currently playing a key role [1,2] since the wind turbines have proven their effectiveness, their efficiency is continuously increasing, and related technology is under constant enhancement [3][4][5][6][7], even looking to urban areas applications [8][9][10]. In the last years, the size of the wind turbines is continuously increasing because of the beneficial scale effects.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Automatic Method for the Urban Canyon Parametrization Needed by Turbulence Numerical Simulations for Wind Energy Potential Assessment

et al. 2021

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The energy transition to more sustainable forms is currently ongoing worldwide, because of the environmental impacts produced by the non-renewable energy sources employed in the last decades. Among the main alternatives, wind plays a key role and, nowadays, innovative instruments, such as small-scale turbines allow for installation of wind turbines in urban areas. Their energy potential assessment requires high-accuracy simulations of the turbulent flows in the urban canopy layer, which, in turn, require detailed information about the geometrical properties of the basic element to classify urban surfaces, i.e., the urban canyon, often not available. In this work, we propose a novel automatic method, based on Voronoi graph, to univocally identify urban canyons and to extract their geometrical parameters from online available GIS (Geographic Information System) data, and test it on four European cities that differ in size, story and location. Results show the capability of the method to identify the single urban canyon and to properly extract its geometrical parameters, which tend to assume similar values for the largest cities. Moreover, we first attempt to propose and test some curves to generally describe the data probability distribution, which may be useful for turbulence simulations for urban wind energy assessment and planning. The best results are found for the canyon aspect ratio.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Automatic Method for the Urban Canyon Parametrization Needed by Turbulence Numerical Simulations for Wind Energy Potential Assessment

et al. 2021

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“…The wind will produce speed at certain times. The speed is received by the VAWT Savonius turbine so that it can rotate (Chang, Tsai, & Chen, 2021). The rotation is forwarded to the generator shaft to produce 500 watts of power.…”

Section: System Planningmentioning

confidence: 99%

Application of Savonius Type Turbine Technology for The Conversion of Low Speed Wind into Electrical Energy at Wong Polo Beach Kota Pari Village Indonesia

Siagian¹,

Hamdani²,

Dalimunthe³

2022

JAETS

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Utilization of the potential that exists in tourist attractions aims to increase the savings in expenses that must be borne by the community to manage tourism. The beach is a place that is rich and abundant in wind potential that can be used to drive wind turbines. To take advantage of the existing wind potential, of course, we must know how the wind potential is in the form of wind speed and locations that have wind speed potential and how to use it as energy to drive wind turbines. To obtain the potential of wind energy and utilize it, wind speed measurements are carried out using a digital anemometer and recorded for some time. The position of the measuring instrument installed must be protected from wind obstacles so that it is installed as high as 20 meters above the ground in an open position against the direction of the incoming wind. From the measurement results over a period of one day, the wind speed varies and changes at any time and the maximum value is 6 m/s during the day starting at 10:00 to 04:00. The wind speed profile obtained is analyzed and the type of turbine is determined according to the low wind speed below 10 m/s. From the analysis results, the appropriate turbine is the Savonius VAWT type and can produce electrical energy of approximately 2.43 Watts with a diameter of 0.11 m. The use of turbines for wind at low speeds will still have the potential to generate small-scale electrical energy for communities in coastal areas

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“…Tartuferia et al [15] improved the aerodynamic performance of the Savonius wind rotor with new rotor blade designs. Chang et al [16] designed a new blade profile in the form of interior design using numerical methods. Zhou et al [17] developed a simulation method for predicting the Savonius rotor's aerodynamic performance.…”

Section: Introductionmentioning

confidence: 99%

Examination of the Effect of Triangular Plate on the Performances of Reverse Rotating Dual Savonius Wind Turbines

Altan

Güngör

2022

Processes

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In the present study, the performance of the Savonius wind turbine in designs with dual turbines rotating opposite to each other was examined. To improve the performance of the Savonius wind turbine in the dual turbine design, a triangular plate was placed in front of the turbines. The effects of the geometric parameters of this triangular plate which was placed on the turbine performance were studied. The numerical analyses performed were confirmed by the experimental data of a previous study in the literature. The performance values of Savonius wind turbines were analyzed by numerical analysis, the accuracy of which was proven by experimental data. ANSYS Fluent, a computational fluid dynamics (CFD) program, was used for the performance analysis. In the first stage, the maximum power coefficient (Cp) of the conventional Savonius wind turbine was obtained around 0.17. With the optimum geometric parameter studies, the maximum power coefficient of the Savonius wind turbine in the triangular plate dual turbine design was determined to be around 0.22. Thus, it was found that the power coefficient obtained by a single Savonius wind turbine in a triangular plate dual turbine design was around 30% higher compared to the power coefficient of the conventional Savonius wind turbine.

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Optimal Design of Novel Blade Profile for Savonius Wind Turbines

Cited by 16 publications

References 23 publications

A Novel Automatic Method for the Urban Canyon Parametrization Needed by Turbulence Numerical Simulations for Wind Energy Potential Assessment

A Novel Automatic Method for the Urban Canyon Parametrization Needed by Turbulence Numerical Simulations for Wind Energy Potential Assessment

Application of Savonius Type Turbine Technology for The Conversion of Low Speed Wind into Electrical Energy at Wong Polo Beach Kota Pari Village Indonesia

Examination of the Effect of Triangular Plate on the Performances of Reverse Rotating Dual Savonius Wind Turbines

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