Suwondo, Ramadhanu Anugrah (2025) Experimental Study on the Effect of Deflector Angle in Front of Returning and Advancing Blades on the Performance of Savonius Wing Turbine “Case Study for Deflector with Angle α = 60° and Angle β = 50°; 60°; 70°; 80°; 90° at Wind Speed of 5 m/s and 7 m/s”. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
The projected increase in electricity demand in the future encourages the exploration of renewable energy sources, and wind energy is one of the main focuses. Savonius wind turbines, which are suitable for low-speed wind conditions such as in Indonesia, have limitations in terms of efficiency. To overcome this, this study aims to improve the performance of the Savonius wind turbine through a specific modification approach. The modification carried out is by adding a deflector to the front of the advancing blade and the returning blade. The addition of this deflector is expected to direct the wind flow more effectively, resulting in a significant increase in turbine performance.
This study was conducted using a Savonius wind turbine with dimensions: turbine blade diameter (D) 165,2 mm, turbine height (H) 295 mm, and shaft diameter (dp) of 19 mm. The addition of two deflectors with a length (l) of 331 mm, a deflector height (h) of 735 mm, with a deflector slope in front of the advancing blade (α) of 60° and a deflector slope in front of the returning blade (β) of 50°, 60°, 70°, 80°, and 90°. The wind speed variations in this study were 5 & 7 m/s, where the wind flow was measured using an anemometer. Turbine performance measurements include static torque measurements using a torquemeter, dynamic torque measurements using a brake dynamometer, and turbine rotational speed measurements using a tachometer.
Based on this research, it will be achieved that the installation of deflectors in front of the returning blade and in front of the advancing blade increases the power coefficient (CoP) and moment coefficient (CM) of the turbine at all variations of wind speed and angle β. The increase in CoPmax and CMmax is 152.35% and 78.94%, respectively, at the configurations α = 60° and β = 60°. The installation of deflectors at all variations of wind speed and angle β increases the self-starting capability of the turbine with positive CTS values at all azimuth angles. Then, the increase in wind speed increases CoP, CM, and the self-starting capability of the turbine at all configurations. CTS max at wind speeds of 5 and 7 m/s is 96.67% and 21.95%, respectively.
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Proyeksi peningkatan kebutuhan listrik di masa mendatang mendorong eksplorasi sumber energi terbarukan, dan energi angin menjadi salah satu fokus utama. Turbin angin Savonius, yang cocok untuk kondisi angin berkecepatan rendah seperti di Indonesia, memiliki keterbatasan dalam hal efisiensi. Untuk mengatasi hal ini, penelitian ini bertujuan untuk meningkatkan kinerja turbin angin Savonius melalui pendekatan modifikasi yang spesifik. Modifikasi yang dilakukan adalah dengan menambahkan deflektor pada bagian depan sudu advancing dan sudu returning. Penambahan deflektor ini diharapkan dapat mengarahkan aliran angin secara lebih efektif, sehingga menghasilkan peningkatan signifikan dalam performa turbin.
Penelitian ini dilakukan menggunakan turbin angin Savonius dengan dimensi: diameter sudu turbin (D) 165,2 mm, tinggi turbin (H) 295 mm, dan diameter poros (dp) sebesar 19 mm. Penambahan dua deflektor dengan panjang (l) 331 mm, tinggi deflektor (h) 735 mm, dengan kemiringan deflektor di depan sudu advancing (α) sebesar 60° dan kemiringan deflektor di depan sudu returning (β) sebesar 50°, 60°, 70°, 80°, dan 90°. 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.
Berdasarkan penelitian ini, akan dicapai hasil bahwa instalasi deflektor di depan sudu returning dan di depan sudu advancing meningkatkan koefisien daya (CoP) dan koefisien momen (CM) turbin pada seluruh variasi kecepatan angin dan sudut β. momen (CM) turbin pada seluruh variasi kecepatan angin dan sudut β . Peningkatan CoPmax dan CMmax masing-masing sebesar 152,35% dan 78,94% pada konfigurasi α = 60° dan β = 60°. Instalasi deflektor pada seluruh variasi kecepatan angin dan sudut β meningkatkan kemampuan self-starting turbin dengan nilai CTS positif pada seluruh sudut azimut. Lalu, peningkatan kecepatan angin meningkatkan CoP, CM, dan kemampuan self-starting turbin pada seluruh konfigurasi. CTS max pada kecepatan angin 5 dan 7 m/s masing-masing sebesar 96,67% dan 21,95%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Coefficient of Moment, Coefficient of Power, Savonius Wind Turbine, Deflector.Coefficient of Moment, Coefficient of Power, Turbin Angin Savonius, Deflektor |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. T Technology > TJ Mechanical engineering and machinery > TJ820 Wind power T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Ramadhanu Anugrah Suwondo |
| Date Deposited: | 31 Jul 2025 08:36 |
| Last Modified: | 31 Jul 2025 08:36 |
| URI: | http://repository.its.ac.id/id/eprint/123873 |
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