Study the Effect of Blade Angles on the Performance of Axial Six Blades Wind Turbine
Abstract
In this paper, the performance of a six blades axial type wind turbine has been studied experimentally to estimate the wind power, the electrically generated power, and the modified power coefficient of the wind turbine. This study was conducted under different operating conditions assuming steady-state, incompressible, and isothermal air flow through the wind turbine. The range of operating conditions was (2 to 5.6 m/s wind speed), (10% to 100% of the electrical load that is applied on the terminals of the electrical generator), and (10° to 80° blades angle of the wind turbine). A good agreement was obtained when comparing the results of the present work with those of a previously published article. The predicted results showed that increasing the wind speed and the blade angle of the wind turbine will increase the generated power from the wind turbine. The maximum value of the modified power coefficient was (0.57) at a wind velocity value of (5.6 m/s) and at a blade's angle value of (80°). It is found that it’s not recommended to operate the wind turbine at (80°) a blade angle associated with a wind speed range that is above (3.8 m/s) due to a high level of wind-turbine vibration.
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