Performance analysis of a cross-axis wind turbine from wind tunnel experiments

Wang, Wei Cheng and Chong, Wen Tong and Chao, Tien Hsin (2018) Performance analysis of a cross-axis wind turbine from wind tunnel experiments. Journal of Wind Engineering and Industrial Aerodynamics, 174. pp. 312-329. ISSN 0167-6105

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Official URL: https://doi.org/10.1016/j.jweia.2018.01.023

Abstract

Wind energy has been considered as one of the primary renewable energy sources globally. In urban areas, due to the irregular arrangement of buildings, small scale wind turbine plays an important roles for household energy grid. In this study, a newly designed small scale wind turbine namely cross-axis wind turbine (CAWT), which combines the characteristics of horizontal and vertical axis wind turbines (HAWT and VAWT), was examined experimentally on the power performance in a low speed, open-loop circuit wind tunnel at Reynolds numbers of Re = 42900, 57100 and 71400. The results were compared to a traditional straight-bladed VAWT. The performance analyses are evaluated in terms of static performance, dynamic performance, and blade force measurement. The results of static and dynamic performances indicate that CAWT has not only better self-starting characteristics but also higher power coefficients over VAWT. The tangential forces measurement on the horizontal blade of CAWT proves its superior power performance compared to VAWT.

Item Type: Article
Uncontrolled Keywords: Wind energy; Cross-axis wind turbine (CAWT); Vertical axis wind turbine (VAWT); Wind tunnel experiment; Power coefficient; Tip speed ratio (TSR)
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Feb 2019 07:26
Last Modified: 19 Feb 2019 07:26
URI: http://eprints.um.edu.my/id/eprint/20395

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