Study of A Vertical Wind Turbine Using Mechanism of Bird Wing (Part 4 Experimental Study under the Higher Wind Velocity)

The objective of this study is to show the effect of guide vane geometry on the performance of wind turbine. In order to overcome the disadvantages of vertical axis wind turbine, a straight-bladed vertical axis wind turbine (S-VAWT) with a directed guide vane row has been proposed and tested by the authors. According to previous studies, it was clarified that the performance of the turbine can be improved by means of the directed guide vane row. However, the guide vane geometry of S-VAWT has not been optimized so far. In order to clarify the effect of guide vane geometry, the effects of distance between the guide vanes and the number of guide vanes on power and torque coefficients were investigated in the experiments. The experimental study was carried out by a wind tunnel. The wind tunnel with a diameter of 1.8m is open jet type. The wind velocity is from 5 to 9 m/s in the experiments. The rotor has three straight blades with a profile of NACA4518 and a chord length of 100 mm, a diameter of 0.6 m and a blade height of 0.7 m. The guide vane row consists of some arc plates.

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Lightning Striking Characteristics to Wind Turbine Blades -Experimental Study of Effects of the Receptor Configuration and Other Parameters-

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.129.331 ◽

2009 ◽

Vol 129 (2) ◽

pp. 331-339

Author(s):

Takatoshi Shindo ◽

Akira Asakawa ◽

Megumu Miki

Keyword(s):

Experimental Study ◽

Wind Turbine ◽

Turbine Blades ◽

Wind Turbine Blades

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Development and Field Testing of an Inclined Flanged Compact Diffuser for a Micro Wind Turbine

Volume 6B: Energy ◽

10.1115/imece2014-37883 ◽

2014 ◽

Cited By ~ 2

Author(s):

Sandip Kale ◽

S. N. Sapali

Keyword(s):

Wind Turbine ◽

Wind Velocity ◽

Wind Turbines ◽

Energy Production ◽

Cost Effective ◽

Field Testing ◽

International Electrotechnical Commission ◽

Average Wind Speed ◽

Average Wind ◽

Power Curves

Micro wind turbines installed in various applications, experience average wind speed for most of the time during operations. Power produced by the wind turbine is proportional to the cubic power of the wind velocity and a small increase in wind velocity results increases power output significantly. The approach wind velocity can be increased by covering traditional wind turbine with a diffuser. Researchers are continuously working to develop a compact, lightweight, cost effective and feasible diffuser for wind turbines. The present work carried out to develop a diffuser with these stated objectives. A compact, lightweight inclined flanged diffuser developed for a micro wind turbine. Bare micro wind turbine and wind turbine covered with developed efficient inclined flanged diffuser tested in the field as per International Electrotechnical Commission (IEC) standards and results presented in the form of power curves. The prediction of annual energy production for both wind turbines determined as per IEC standards.

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