Kajian Eksperimen Pengaruh Rasio Diameter Silinder Di Depan Returning Blade Turbin Angin Savonius Myring N=1 Dengan Fin

Abstract

Savonius wind turbine have the lowest efficientcy compared to other wind turbines.
Based on the previous research, additional interfering cylinder and fin to the turbine was less
efficient so there is still an opportunity to improved. Based on this condition, the experimental
study was carried out by adding 1 fin to each turbine blade and placing an interfering cylinder in
front returning blade to determine its improvement. It aslso compared between both of them in the
experimental also used the myring equation n=1. Wind turbine dimension was 40 cm and
variation of interfering cylinder diameter ratio was ds/d = 0,4;0,5;0,6; and 0,7. The speed
variation was 5 m/s, 6 m/s and 7 m/s. The best performance of the savonius myring n=1 wind
turbine is obtained at ds/d = 0,4 at a speed of 6 m/s. The coefficient of torque (Ct) performance
increase 21.47% and the coefficient of power (Cp) 89.80%