Spiral wind blade power generation

What is a spiral wind turbine?

The Archimedes spiral wind turbine, a horizontal-axis drag-type turbine, is known to have slightly higher aerodynamic efficiency than those of vertical-axis drag-type wind turbines. Although they are less efficient than horizontal-axis lift-type wind turbines, according to drag-driven turbine, they can start generating power at cut-in wind speed.

Does blade thickness affect performance of Archimedes spiral wind turbine (aswt)?

Recently, many wind turbines have been used to extract power from wind, such as Archimedes Spiral Wind Turbine (ASWT). In the current work, experimental and numerical studies are performed to elucidate the effect of the blades' thickness and the blade angles on the performance of ASWT.

What is Archimedes spiral wind turbine?

5. Conclusion Archimedes Spiral Wind Turbine (ASWT) is a new wind turbine design to extract kinetic energy from the wind. In the current work, a deep comparison between two different blades designs, fixed and variable angle blades, of the ASWT is introduced.

What are the shape parameters of Archimedes spiral wind turbine blade?

Schematic diagram of the Archimedes spiral wind turbine blade: (a) Side-view of the Archimedes spiral wind turbine blade; (b) Geometry of a 0.5 kW Archimedes wind turbine blade. The shape parameters can be defined for the equation development. The shape parameters include γ, R 1, and S 1, as shown in Figure 2.

How long is a wind turbine blade?

Actually, the geometry of the spiral blades was considered as a great challenge. The investigated model had a diameter of 0.15 m and an aspect ratio (diameter/length) of 1.5. Thus, according to the traditional Archimedes wind-turbine-blades patent , the length of the turbine blade was 0.1 m.

Why is a spiral wind turbine better than a horizontal wind turbine?

In contrast to the conventional horizontal wind turbine, the velocity at the core area of the tip vortex induced from the spiral wind turbine is higher due to the spiral-shaped blades, which can increase the airflow speed through the spiral-shaped surface.