Desempenho aerodinâmico de perfis NACA de quatro dígitos em aerogeradores de pequeno porte para a agricultura familiar

Rocha, Paulo Alexandre Costa; Albiero, Daniel; Fernandes, Marcos Paulo Gomes; Fernandes, J. L.

doi:10.5433/1679-0359.2015v36n3p1227

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…This airfoil has been examined in other works as a candidate Sultanate of Oman section for wind turbine blades [20][21][22]. The predicted performance for a small-scale wind turbine with this airfoil was comparable to that with the cambered airfoil NACA 4412, provided that it operates near the design rotational speed [23]. Instead of using a simplified curve for the lift coefficient as a function of the incidence [15], we used the actual curves published by the National Aeronautics and Space Administration (NASA) in the USA, which was previously called the National Advisory Committee for Aeronautics (NACA).…”

Section: Airfoil Sectionmentioning

confidence: 99%

Proposed 2MW Wind Turbine for Use in the Governorate of Dhofar at the Sultanate of Oman

Marzouk¹,

Badi²,

Rashdi³

et al. 2019

SJEE

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In this work, we propose a preliminary design of a horizontal-axis wind turbine (HAWT) as a candidate for the Dhofar Wind Farm project, in the southern Omani Governorate "Dhofar", at the southwest part of the Sultanate of Oman. This wind farm (under construction) is considered to be the first commercial, utility-scale (50MW) wind farm in the GCC (Gulf Cooperation Council) area. The proposed wind turbine has an expected electricity generation of 2MW. We studied the wind atlas of Oman and from which we determined the maximum possible mean wind speed in the entire Sultanate and built our design based on that reference value, which is 6m/s (21.6km/h). After this, we applied a set of modeling equations that estimate the power output from the wind turbine rotor and matched the target electric power to the design variables using a MATLAB computer code. We reached a suitable design and we present here the distribution of the blade angle (twist angle), and the power per unit span along the rotor blade. The rotor design has 3 blades with a diameter of 70m and a rotational speed of 24rpm. This rotor gives 2.37MW of output power, which exceeds the target 2MW output, allowing for about 15% of power losses in the gearbox and generator. We utilized some commercial designs of wind turbines from different international manufacturers as references for typical limits or recommended values of some design parameters.

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Section: Airfoil Sectionmentioning

confidence: 99%