Design, Fabrication, and Performance Test of a 100-W Helical-Blade Vertical-Axis Wind Turbine at Low Tip-Speed Ratio

Dowon Han, Young Gun Heo, Nak Joon Choi, Sang Hyun Nam, Kyoung Ho Choi and Kyung Chun Kim
Additional contact information
Dowon Han: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Young Gun Heo: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Nak Joon Choi: ICT Co., Busan 48059, Korea
Sang Hyun Nam: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Kyoung Ho Choi: DNDE Co., Busan 48059, Korea
Kyung Chun Kim: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea

Energies, 2018, vol. 11, issue 6, 1-17

Abstract: A 100-W helical-blade vertical-axis wind turbine was designed, manufactured, and tested in a wind tunnel. A relatively low tip-speed ratio of 1.1 was targeted for usage in an urban environment at a rated wind speed of 9 m/s and a rotational speed of 170 rpm. The basic dimensions were determined through a momentum-based design method according to the IEC 61400-2 protocol. The power output was estimated by a mathematical model that takes into account the aerodynamic performance of the NACA0018 blade shape. The lift and drag of the blade with respect to the angle of attack during rotation were calculated using 2D computational fluid dynamics (CFD) simulation to take into account stall region. The average power output calculated by the model was 108.34 W, which satisfies the target output of 100 W. The manufactured wind turbine was tested in a large closed-circuit wind tunnel, and the power outputs were measured for given wind speeds. At the design condition, the measured power output was 114.7 W, which is 5.9% higher than that of the mathematical model. This result validates the proposed design method and power estimation by the mathematical model.

Keywords: vertical axis wind turbine; helical blade; low tip-speed ratio; design and fabrication; wind tunnel test (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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