Title

Use of a Miniature Wind Turbine with Rectangular Blades to Demonstrate and Confirm the Existence of Optimal Angles of Inclination of Turbine Blades at Which Peak Power is Produced

Document Type

Article

Publication Date

2012

Publication Source

World Transactions on Engineering and Technology Education (WTE&TE)

Volume

10

Issue

1

Inclusive pages

35-40

Publisher

UNESCO * International Centre for Engineering Education

Place of Publication

Australia

ISBN/ISSN

1446-2257

Abstract

The testing of a miniature wind turbine equipped with three rectangular blades demonstrated that power produced by that turbine varied with the speed of the wind and with the angle of inclination of the turbine blades to the wind direction. Tested angles of inclinations varied from 0˚ to 90˚ and each angle was tested using wind speeds that ranged from 0.1 m/s to 4.5 m/s. It was found that peak power produced by the turbine always occurred in the same narrow range of angles of inclination of the turbine blades. These findings support and confirm similar results obtained in a previous investigation that had used a different turbine and a different fan. Furthermore, the current study suggests that, when it comes to the determination of the coefficient of performance of a miniature wind turbine, the so-called interference factor can be accurately described using a simple mathematical function that is related to the angle of inclination of the turbine blades. For the data collected in this study, it was shown that choosing the sine of the angle of inclination of the turbine blade with the vertical, such a function worked very well.

Disciplines

Engineering