Savonius turbine performance with slotted blades
Catur Harsito, Dominicus Danardono Dwi Prija Tjahjana, Budi Kristiawan
Abstract
Non-renewable energy source will run out quickly and pollute dangerously the environment. This causes the change in using source of energy to the renewable energy which is clean and eco-friendly. Wind turbine is one of renewable energy which is eco-friendly and having abundant sources. Indonesia has wind velocity for about 4 m/s which is appropriate to be installed Savonius wind turbine. This paper aims to increase Savonius wind turbine performance by adding slotted 5 mm and 7 mm, at 30 % chord of blade. In measuring the turbine, blower fans were used as the source of wind with the wind velocity of about 4 m/s to 7 m/s. The result showed that applying slotted blades could increase torque, therefore it was able to produce performance improvement at the condition of low angular velocity. The highest power coefficient occurred when slotted blades variation 5 mm at 30 % chord of blade is 0.118 at TSR 0.350.