Kajian Eksperimen Pengaruh Variasi Sudut Deflektor di Depan Returning Blade Terhadap Performa Turbin Angin Savonius Dengan Persamaan Myring n=1

Abstract

Indonesia has wind energy potential of 970MW, which allows wind turbines
to generate electricity. Savonius wind turbines are suitable for it because they can
be operated at low wind speed. Many studies had been conducted to improve the
performance of these turbines. Additional deflector could enhance the performance
of overlapping Savonius wind turbines, but additional deflector plates with Myring
n=1 has not been tested yet. This experimental study involved adding a deflector of
50cm long and 40cm high in front of returning blade with Myring n=1. The
deflector angles are ?= 30°, 35°, 45°, and 60°. Variation of wind speeds are 5m/s,
6m/s, and 7m/s. The study aimed to determine the turbine performance after adding
deflector in terms of coefficient of torque (Ct) and coefficient of power (Cp). The
results indicated that adding the deflector and varying its angles in front of
returning blade with Myring n=1 Savonius wind turbine doesn’t perform better
than without any deflector. There are a decrease in the coefficient of torque (Ct) by
30% to 95% and also in the coefficient of power (Cp) by 33% to 98% at a wind
speed 6m/s.