Studi Eksperimental tentang Pengaruh Sudut Deflektor di depan Sudu Advancing dan Returning terhadap Kinerja Turbin Angin Savonius

Rahmadina, Salsabila (2024) Studi Eksperimental tentang Pengaruh Sudut Deflektor di depan Sudu Advancing dan Returning terhadap Kinerja Turbin Angin Savonius. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingginya proyeksi kebutuhan listrik pada masa mendatang, mengakibatkan perlu adanya optimasi pemanfaatan energi alternatif terbarukan, salah satunya energi angin. Menyesuaikan karakter angin di Indonesia dengan kecepatan aliran angin yang relatif rendah, membuat turbin angin Savonius merupakan pilihan yang tepat. Tetapi, turbin angin Savonius memiliki performa yang rendah dibandingkan dengan jenis turbin lainnya, sehingga perlu dilakukan modifikasi untuk meningkatkan kinerja turbin angin Savonius. Pada penelitian ini dilakukan penambahan deflektor di depan sudu advancing dan sudu returning untuk meningkatkan performa turbin angin Savonius.
Penelitian ini dilakukan menggunakan turbin angin Savonius dengan dimensi: diameter sudu turbin (D) 165,2 mm, tinggi turbin (H) 294 mm, dan diameter poros (b) sebesar 19 mm. Penambahan dua deflektor dengan panjang (l) 325 mm, tinggi deflektor (h) 735 mm, dengan kemiringan deflektor di depan sudu advancing (α) sebesar 0°, 10°, 20°, 30°, 45° dan kemiringan deflektor di depan sudu returning (β) sebesar 60°. Variasi kecepatan angin pada penelitian ini yaitu 5 & 7 m/s, dimana aliran angin diukur menggunakan anemometer. Pengukuran performa turbin mencakup pengukuran torsi statis menggunakan torquemeter, pengukuran torsi dinamis menggunakan brake dynamometer, dan pengukuran kecepatan putar turbin menggunakan tachometer.
Hasil yang diperoleh untuk keseluruhan konfigurasi pada penelitian ini yaitu peningkatan nilai Coefficient of Power (CoP) tertinggi pada α = 45°, untuk kecepatan angin 5 & 7 m/s masing-masing sebesar 64,81% dan 57% dibanding konfigurasi turbin konvensional. Peningkatan pada Coefficient of Moment (CM) tertinggi juga terjadi pada konfigurasi α = 45°, untuk kecepatan angin 5 & 7 m/s masing-masing sebesar 39,62% dan 43,23% dibanding konfigurasi turbin konvensional. Pemasangan deflektor terbukti memperbaiki kemampuan self-starting turbin angin Savonius, dibuktikan dengan diperolehnya nilai Coefficient of Static Torque > 0 untuk semua posisi sudu turbin (θ).
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The increasing projection of electricity demand in the future necessitates the optimization of renewable alternative energy utilization, one of which is wind energy. Considering the wind characteristics in Indonesia, where the wind flow speed is relatively low, the Savonius wind turbine is an appropriate choice. However, the Savonius wind turbine has lower performance compared to other types of turbines, hence modifications are necessary to enhance its performance. This experiment investigates the addition of deflectors in front of the advancing and returning blades to improve the performance of the Savonius wind turbine.
The experiment employs a Savonius wind turbine with the following dimensions: turbine blade diameter (D) of 165.2 mm, turbine height (H) of 294 mm, and shaft diameter (b) of 19 mm. Two deflectors were added with a length (l) of 325 mm, deflector height (h) of 735 mm, with the deflector angle in front of the advancing blade (α) at 0°, 10°, 20°, 30°, and 45°, and the deflector angle in front of the returning blade (β) at 60°. The wind speed variations in this experiment were 5 and 7 m/s, measured using an anemometer. The performance measurements of the turbine included static torque measurement using a torquemeter, dynamic torque measurement using a brake dynamometer, and turbine rotational speed measurement using a tachometer.
The results obtained for overall configuration from this experiment show the highest increase in the Coefficient of Power (CoP) at α = 45°, with wind speeds of 5 and 7 m/s, achieving increases of 64,81% and 57% respectively compared to the conventional turbine configuration. The highest increase in the Coefficient of Moment (CM) also occurred at the α = 45° configuration, with wind speeds of 5 and 7 m/s, achieving increases of 39,62% and 43,23% respectively compared to the conventional turbine configuration. The installation of deflectors was proven to improve the self-starting capability of the Savonius wind turbine, as evidenced by the Coefficient of Static Torque > 0 for all turbine blade positions (θ).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Turbin Angin Savonius, Deflektor, Koefisien Daya, Koefisien Momen, Kemampuan Self-starting. Savonius Wind Turbine, Deflector, Coefficient of Power, Coefficient of Moment, Self-starting Ability.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Salsabila Rahmadina
Date Deposited:	07 Aug 2024 07:46
Last Modified:	07 Aug 2024 07:47
URI:	http://repository.its.ac.id/id/eprint/113064

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