Development of High Performance Airfoils for Application in Small Wind Turbine Power Generation

Osei, Emmanuel Yeboah; Opoku, Richard; Sunnu, Albert K.; Adaramola, Muyiwa S.

doi:10.1155/2020/9710189

Cited by 16 publications

(4 citation statements)

References 50 publications

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“…Therefore, according to the data given in Table 3, August, March and April are the design months for Abomsa, Metehara and Ziway, respectively. For three rotor blade design, Gigueŕe and Selig [11] and Osei [12] recommended airfoil type SG6043 for low Reynolds numbers because this type of airfoil operates in regional low wind speed. and C l /C d graphs characteristics of SG6043 with Re of 0.23×10 6 , 0.25×10 6 and 0.29×10 6 are evaluated, as illustrated in Fig.…”

Section: Analysis Of Resultsmentioning

confidence: 99%

“…This study focused on designing optimum rotary blades for a wind-powered water-pumping system for local selected sites at Abomsa, Metehara and Ziway (Ethiopia). This design of the blades is based on the design of an aerodynamic type of SG6043 airfoil reported by Gigueŕe and Selig [11] and Osei et al [12] and analysis of collected wind speed data of the sites [13] from the National Meteorological Agency (NMA). The blade parameters, including chord distribution length, angle of twist, tip speed ratio, power coefficient of the blade, and attack angle, were determined.…”

Section: Introductionmentioning

confidence: 99%

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Determining Optimum Rotary Blade Design for Wind-Powered Water-Pumping Systems for Local Selected Sites

Mohammed

Lemu

Sirahbizu

2021

SV-JME

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The design of a windmill rotor is critical for harnessing wind energy. In this work, a study is conducted to optimize the design and performance of a rotor blade that is suitable for low wind conditions. The windmills’ rotor blades are aerodynamically designed based on the SG6043 airfoil and wind speed data at local selected sites. The aerodynamic profile of the rotor blade that can provide a maximum power coefficient, which is the relation between real rotor performance and the available wind energy on a given reference area, was calculated. Different parameters, such as blade shapes, chord distributions, tip speed ratio, geometries set angles, etc., were used to optimize the blade design with the objective of extracting maximum wind power for a water pumping system. Windmill rotor of 10.74 m, 7.34 m, and 6.34 m diameter with three blades were obtained for the selected sites at Abomsa, Metehara, and Ziway in south-east Ethiopia. During the rotary blades performance optimization, blade element momentum (BEM) theory and solving iteration by MATLAB® coding were used.

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Section: Analysis Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determining Optimum Rotary Blade Design for Wind-Powered Water-Pumping Systems for Local Selected Sites

Mohammed

Lemu

Sirahbizu

2021

SV-JME

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“…This is mainly owing to the theory's consistency with experimental results. The BEMT's robustness in wind turbine rotor analysis has been proved in multiple studies [43]. Equations ( 9)-( 13) describe the BEMT equations employed in the rotor development [44].…”

Section: Blade Element Momentum Theorymentioning

confidence: 99%

Wind Farm Power Prediction Considering Layout and Wake Effect: Case Study of Saudi Arabia

2023

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The world’s technological and economic advancements have led to a sharp increase in the demand for electrical energy. Saudi Arabia is experiencing rapid economic and demographic growth, which is resulting in higher energy needs. The limits of fossil fuel reserves and their disruption to the environment have motivated the pursuit of alternative energy options such as wind energy. In order to regulate the power system to maintain safe and dependable operation, projections of current and daily power generation are crucial. Thus, this work focuses on wind power prediction and the statistical analysis of wind characteristics using wind data from a meteorological station in Makkah, Saudi Arabia. The data were collected over four years from January 2015 to July 2018. More than twelve thousand data points were collected and analyzed. Layout and wake effect studies were carried out. Furthermore, the near wake length downstream from the rotor disc between 1 and 5 rotor diameters (1D to 5D) was taken into account. Five robust machine learning algorithms were implemented to estimate the potential wind power production from a wind farm in Makkah, Saudi Arabia. The relationship between the wind speed and power produced for each season was carefully studied. Due to the variability in the wind speeds, the power production fluctuated much more in the winter. The higher the wind speed, the more significant the difference in energy production between the five farm layouts, and vice versa, whereas at a low wind speed, there was no significant difference in the power production in all of the near wake lengths of the 1D to 5D rotor diameters downstream from the rotor disc. Among the utilized prediction models, the decision tree regression was found to have the best accuracy values in all four utilized evaluation metrics, with 0.994 in R-squared, 0.025 in MAE, 0.273 in MSE, and 0.522 in RMSE. The obtained results were satisfactory and provide support for the construction of several wind farms, producing hundreds of megawatts, in Saudi Arabia, particularly in the Makkah Region.

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“…By applying Blade Element Momentum Theory (BEMT), the equations of a wind turbine blade, power-coefficient of the wind turbine can be derived. The BEMT equations are presented in Equations [18]-[22] (Osei et al, 2020).…”

Section: Mathematical Framework For Hawt Power Coefficientmentioning

confidence: 99%

Aerodynamic Performance of Vertical and Horizontal Axis Wind Turbines: A Comparison Review

Eftekhari

Al-Obaidi

Eftekhari

2021

Indonesian J. Sci. Technol

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The need for energy and electricity has been increasing globally, and this means more power is required from the power plants. Power plants, however, will then continue harming the earth because of the greenhouse gasses produced while generating energies that contribute to global warming. Using renewable sources to produce clean energies is one of the sustainable methods to deal with such challenges. Wind energy is one of the renewable sources, which is accessible anywhere on earth, creating green energy. Wind turbines are mainly categorized into Horizontal Axis Wind Turbines (HAWT) and Vertical Axis Wind Turbines (VAWT). This paper firstly presents a general comparison between the HAWTs and VAWTs. Then, it presents mathematical modelling for the aerodynamic factors of HAWT and Darrieus VAWT to assist the researchers to understand some key design aspects of wind turbines, such as lift/drag ratio, tip speed ratio, power coefficient, and torque coefficient. Also, this paper presents a review of the aerodynamic performance of the recent VAWT designs to help researchers to identify and choose the best model among the Savonius and Darrieus rotors for further development or designing a new model at different wind conditions. This comparison review shows that for a large scale HAWT upwind 3 bladed wind turbines are the most optimum. The helical Savonius rotors perform better by having positive torque coefficient at all azimuth angles. Moreover, helical Darrieus was found to produce lesser noise and suitable for conventional areas. hybrid Savonius-Darrieus rotors can solve the self-starting challenge of the VAWTs, and they are suitable at low wind speeds. At last, this review shows some of the recent hybrid Savonius-Darrieus rotors which would help to solve the low efficiency of Savonius rotor and self-starting challenge of Darrieus rotors.

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Development of High Performance Airfoils for Application in Small Wind Turbine Power Generation

Cited by 16 publications

References 50 publications

Determining Optimum Rotary Blade Design for Wind-Powered Water-Pumping Systems for Local Selected Sites

Determining Optimum Rotary Blade Design for Wind-Powered Water-Pumping Systems for Local Selected Sites

Wind Farm Power Prediction Considering Layout and Wake Effect: Case Study of Saudi Arabia

Aerodynamic Performance of Vertical and Horizontal Axis Wind Turbines: A Comparison Review

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