Development of rotation flow VAWT for pumping system

Abstract

Wind tunnel tests of ‘Rotational Flow Wind Turbine’, 0.94 m in diameter, and 0.847m in height, was conducted. The turbine has eight blades, and two kinds of blade width was tested.

The torque coefficient at the tip speed ratio of 0.2 was above 0.25, and maximum power coefficient shows the value of 0.07 at the tip speed of 0.38.

Additionally, a vane-type hydraulic pump, which was directly connected to the wind turbine, was certificated to be able to pump up the water above 5.7m height.