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Heat Transfer Research
Fator do impacto: 1.199 FI de cinco anos: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v40.i8.40
pages 777-792

Development and Power Performance Test of a Small Three-Blade Horizontal-Axis Wind Turbine

K. R. Ajao
Department of Mechanical Engineering, University of Ilorin, Ilorin, Nigeria
Isaac Kayode Adegun
Department of Mechanical Engineering, University of Ilorin, Ilorin, Nigeria


The parameterization, installation, and testing of a locally developed three-blade horizontal-axis wind turbine were carried out. The turbine blades were fabricated from Mansonia Altissima wood because of its availability, good strength, and resistance to both fatigue and soaking, with a rotor swept area of 3.65 m2 and the blade angle of attack was experimentally determined to be 7°. The turbine was installed on the roof top of the University of Ilorin, Faculty of Engineering Central Workshop Building at a hub height of 14.9 m from the ground level while the turbine generator was sourced locally. The direct current (d.c.) power output of the test turbine was measured at the battery bank terminal by a Power Analyzer and a direct current (d.c.) to alternating current (a.c.) inverter converts the d.c. power output to a.c. power and was measured by a digital wattmeter. An anemometer with a data logger installed on a meteorological tower (MET) measured the wind speed and direction over the test period. The cut-in wind speed, that is, the speed at which the wind turbine starts to produce power was determined to be 3.5 m/sec. One minutes averages of wind speed and power output was used to determine the power curve for the wind turbine. Measured power increase consistently with increased wind speed and the power curve obtained compared fairly well with standard power curves.


  1. Ajao, K. R., Development and Performance Assessment of a Small Horizontal-axis Wind Turbine.

  2. Vermeer, L. J., Sorensen, J. N., and Crespo, A., Wind turbine wake aerodynamics.

  3. Adegoke, C. O. and Anjorin, A. S., Wind as an alternative energy source.

  4. Iloeje, O. C., Overview of Renewable Energy in Nigeria, Opportunities for Rural Development and Development of a Renewable Master Plan, Energy Commission of Nigeria, Presented at the Renewable Energy Conference "ENERGETIC SOLUTION", Abuja/Calabar, 21-26 November 2004.

  5. Okafor, N. F. and Hofmann, W., Recent developments in wind energy conversion technology and their benefits to Nigeria's power generation needs. In: Proc. 35th Annual Conference of Nigerian Society of Engineers, Abuja, November 2000.

  6. Muljadi, E. and Green, J., Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator.

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