Wind and Structures

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Wind-lens turbine design for low wind speed

  • Takeyeldein, Mohamed M. (Faculty of Mechanical Engineering, Universiti Teknologi Malaysia) ;
  • Ishak, I.S. (UTM Aerolab, Institute for Vehicle System & Engineering, Universiti Teknologi Malaysia) ;
  • Lazim, Tholudin M. (Faculty of Mechanical Engineering, Universiti Teknologi Malaysia)
  • Received : 2021.10.16
  • Accepted : 2022.09.06
  • Published : 2022.09.25
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Abstract

This research proposes a wind-lens turbine design that can startup and operate at a low wind speed (< 5m/s). The performance of the wind-lens turbine was investigated using CFD and wind tunnel testing. The wind-lens turbine consists of a 3-bladed horizontal axis wind turbine with a diameter of 0.6m and a diffuser-shaped shroud that uses the suction side of the thin airfoil SD2030 as a cross-section profile. The performance of the 3-bladed wind-lens turbine was then compared to the two-bladed rotor configuration while keeping the blade geometry the same. The 3-bladed wind-lens turbine successfully startup at 1m/s and produced a torque of 66% higher than the bare turbine, while the two-bladed wind-lens turbine startup at less than 4m/s and produced a torque of 186 % higher than the two-bladed bare turbine at the design point. Findings testify that adding the wind-lens could improve the bare turbine's performance at low wind speed.

Keywords

Acknowledgement

The authors are grateful to Universiti Teknologi Malaysia (UTM) for providing valuable technical support to conduct this research project. The authors are also indebted to the UTM-Research University Grant, Tier 2 Vot Number Q.J130000.2651.16J33.

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