Shidqi, Adam Malik (2025) Studi Eksperimental Tentang Pengaruh Sudut Deflektor Di Depan Sudu Returning Dan Di Samping Sudu Advancing Terhadap Kinerja Turbin Angin Savonius. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5007211196_Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5007211196_Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (7MB) | Request a copy |
Abstract
Kebutuhan listrik yang meningkat akibat pertumbuhan penduduk dan industri masih didominasi oleh energi fosil yang merusak lingkungan. Energi angin menjadi alternatif ramah lingkungan, dengan turbin Savonius sebagai solusi potensial karena mampu bekerja pada angin rendah serta mudah dirawat. Namun, efisiensinya masih rendah, sehingga diperlukan inovasi seperti penambahan deflektor. Penelitian ini bertujuan mengkaji pengaruh variasi sudut deflektor terhadap peningkatan kinerja turbin Savonius. Pengujian dilakukan secara eksperimental menggunakan turbin Savonius berdiameter 165,2 mm, tinggi 294 mm, dan diameter poros 19 mm, dengan dua deflektor yang masing-masing memiliki panjang 311 mm dan tinggi 735 mm. Sudut deflektor di samping sudu advancing (α) ditetapkan 70°, sedangkan sudut di depan sudu returning (β) divariasikan antara 50° hingga 90°. Kecepatan angin 5 dan 7 m/s diukur menggunakan anemometer. Performa turbin diuji dengan tachometer, torquemeter, dan brake dynamometer untuk memperoleh data kecepatan putar, torsi statis, dan torsi dinamis, yang selanjutnya digunakan untuk menghitung nilai Coefficient of Power (CoP), Coefficient of Moment (CM), dan Coefficient of Static Torque (CTS) guna menentukan konfigurasi deflektor paling optimal. Konfigurasi sudut deflektor β = 50° tercatat memberikan performa paling efektif pada kecepatan angin rendah yaitu 5 m/s walaupun pada Coefficient of Power (CoP) hanya sebesar 68,33% dimana konfigurasi β = 80° adalah yang tertinggi yaitu sebesar 96,67% dan terjadi peningkatan signifikan pada Coefficient of Moment (CM) sebesar 73,30% pada konfigurasi deflektor β = 50° dibandingkan dengan turbin tanpa deflektor. Namun, pada kecepatan angin 7 m/s, efektivitas konfigurasi ini menurun, ditunjukkan oleh penurunan CoP sebesar 2,35% dan peningkatan CM yang hanya mencapai 0,67%. Di sisi lain, meskipun dilakukan variasi sudut deflektor, nilai Coefficient of Static Torque (CTS) tidak menunjukkan konsistensi peningkatan dan masih ditemukan nilai CTS < 0. Hal ini mengindikasikan bahwa penambahan deflektor belum mampu meningkatkan kemampuan self-starting turbin secara merata pada semua posisi sudu.
================================================================================================================================
The increasing demand for electricity due to population and industrial growth is still dominated by fossil energy sources, which are harmful to the environment. Wind energy offers an environmentally friendly alternative, with the Savonius turbine emerging as a potential solution due to its ability to operate at low wind speeds and its simple, easy-to-maintain design. However, its efficiency remains relatively low, thus requiring innovations such as the addition of deflectors to optimize airflow to the blades. This study aims to examine the effect of deflector angle variation on improving the performance of a Savonius turbine. Experimental testing was conducted using a Savonius turbine with a diameter of 165.2 mm, a height of 294 mm, and a shaft diameter of 19 mm, equipped with two deflectors—each 311 mm in length and 735 mm in height. The deflector angle beside the advancing blade (α) was fixed at 70°, while the angle in front of the returning blade (β) was varied from 50° to 90°. Wind speeds of 5 and 7 m/s were measured using an anemometer. Turbine performance was assessed using a tachometer, torquemeter, and brake dynamometer to obtain data on rotational speed, static torque, and dynamic torque. These measurements were used to calculate the Coefficient of Power (CoP), Coefficient of Moment (CM), and Coefficient of Static Torque (CTS) in order to determine the most optimal deflector configuration. The deflector angle configuration of β = 50° yielded the most effective performance at a low wind speed of 5 m/s, although the Coefficient of Power (CoP) achieved was only 68.33%, whereas the highest CoP value was observed at β = 80°, reaching 96.67%. A significant improvement in the Coefficient of Moment (CM) was recorded at β = 50°, with an increase of 73.30% compared to the turbine without a deflector. However, at a wind speed of 7 m/s, the effectiveness of this configuration decreased, as indicated by a CoP reduction of 2.35% and a CM increase of only 0.67%. On the other hand, despite variations in deflector angles, the Coefficient of Static Torque (CTS) did not show a consistent improvement, and values of CTS < 0 were still observed. This indicates that the addition of deflectors has not yet effectively enhanced the turbine's self-starting capability across all blade positions.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Turbin Angin Savonius, Kemampuan self-starting, Koefisien Daya, Koefisien Momen, Deflektor, Savonius Wind Turbine, Deflector, Coefficient of Power, Coefficient of Moment, Self-starting Ability |
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Adam Malik Shidqi |
| Date Deposited: | 31 Jul 2025 01:15 |
| Last Modified: | 31 Jul 2025 01:15 |
| URI: | http://repository.its.ac.id/id/eprint/123441 |
Actions (login required)
 |
View Item |