Drestanto, Prabasworo (2020) Studi Eksperimen Pengaruh Variasi Ukuran Diameter Silinder Pengganggu di Depan Sisi Returning Blade Terhadap Kinerja Turbin Angin Savonius “Studi Kasus Variasi Rasio S/D = 2,4; y/D = 0,5; d/D = 0,1; 0,2; 0,3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9; dan 1,0; pada Re = 9,7x10^4 dan 13,6x10^4”. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02111540000118-Undergraduate_Thesis.pdf Download (4MB) | Preview |
Abstract
Saat ini, energi fosil merupakan sumber yang paling banyak digunakan untuk menghasilkan energi listrik. Padahal pemanfaatan energi fosil dapat menimbulkan polusi dan secara jangka panjang sumber energi ini juga akan habis. Energi terbarukan untuk menghasilkan listrik sudah mulai dikembangkan karena tidak menimbulkan polusi dan sumbernya tidak akan habis. Kecepatan angin rata-rata di Indonesia adalah 3,5 m/s – 6,1 m/s berdasarkan Global Wind Atlas, kecepatan tersebut dapat terbilang cukup rendah. Hal tersebut membuat turbin Savonius yang memiliki kelebihan untuk dapat berputar pada kecepatan angin rendah sangat cocok untuk diaplikasikan di Indonesia. Studi eksperimen dilakukan menggunakan turbin angin Savonius dengan 2 sudu yang memiliki ukuran diameter sudu (D) sebesar 167,1 mm; tinggi (H) 298 mm; diameter poros (e) 19,3 mm; diameter end plate (D0) 320 mm; tebal end plate 1,8 mm; dan tebal sudu turbin 2,95 mm. Silinder sirkular penganggu yang diletakkan di depan returning blade untuk mengurangi gaya drag yang terjadi pada bagian returning blade turbin. Silinder pengganggu yang digunakan memilki variasi rasio diameter silinder pengganggu terhadap diameter sudu turbin (d/D) sebesar 0,1; 0,2; 0,3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9; 1,0 yang ditempatkan dengan rasio jarak silinder pengganggu terhadap diameter sudu turbin (S/D) sebesar 2,4. Peralatan lain yang digunakan adalah axial fan, voltage regulator, honeycomb, anemometer, brake dynamometer, dan tachometer. Penelitian ini juga menggunakan variasi bilangan Reynolds = 9,7x104 dan 13,6x104. Hasil yang didapat dari eksperimen ini adalah penempatan silinder pengganggu dengan d/D = 0,5 untuk Re = 9,7x104 merupakan yang paling efektif untuk meningkatkan performa turbin angin Savonius; dimana nilai Coefficient of Power maksimum turbin meningkat 34,2% dari 0,152 menjadi 0,203; dan Coefficient of Moment maksimum turbin meningkat 29,1% dari 0,284 menjadi 0,366. Selain itu, penempatan silinder pengganggu di depan returning blade dengan d/D = 0,5 untuk Re = 9,7x104 dan d/D = 0,6 untuk Re = 13,6x104 dapat meningkatkan kemampuan self-starting turbin angin Savonius di semua posisi angular sudu turbin.
============================================================================================================================
Nowadays, fossil energy is widely used as the main source of electricity. However, the use of fossil energy is exhaustible and pose environmental threat through its pollution. The idea of using renewable sources to produce electricity has begun to be developed because renewable energy does not cause pollution and the resources are sustainable. According to Global Wind Atlas, the average wind speed in Indonesia is 3.5 m / s - 6.1 m/s, which is fairly low. This makes the Savonius turbine, which has the advantage of being able to spin at low wind speeds, is very suitable for application in Indonesia. An experimental study has been done by using a Savonius wind turbine with 2 blades which had a blade diameter (D) of 167.1 mm; height (H) 298 mm; shaft diameter (e) 19.3 mm; end plate diameter (D0) 320 mm; end plate thickness 1.8 mm; and turbine blade thickness 2.95 mm. A circular cylinder was placed in front of the returning blade to reduce the drag force that occurs on the returning blade of the turbine. The cylinders were used with variation in the diameter ratio of the cylinder to the diameter of the turbine blade (d / D) of 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 1.0 which were placed with the ratio of cylinder distance to turbine blade diameter (S / D) of 2.4. Other devices that were used are axial fan, voltage regulator, honeycomb, anemometer, brake dynamometer, and tachometer. This study was also conducted with variations of Reynolds number = 9.7x104 and 13.6x104. The results from this experiment are the placement of the cylinder with d / D = 0.5 for Re = 9.7x104 is the most effective treatment to improve the performance of Savonius wind turbines; where the maximum Coefficient of Power value of the turbine increased 34.2% from 0,152 to 0.203; and the maximum Coefficient of Moment of the turbine increased 29.1% from 0,284 to 0.366. In addition, the placement of the cylinder in front of the returning blade with d / D = 0.5 for Re = 9.7x104 and d / D = 0.6 for Re = 13.6x104 was able to improve the self-starting ability of Savonius wind turbines in every angular position of the turbine blade.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 621.406 Dre s-1 2020 |
| Uncontrolled Keywords: | Turbin angin Savonius, silinder pengganggu, coefficient of power, coefficient of moment, torsi statis |
| Subjects: | 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: | Prabasworo Drestanto |
| Date Deposited: | 05 Mar 2025 02:46 |
| Last Modified: | 05 Mar 2025 02:46 |
| URI: | http://repository.its.ac.id/id/eprint/73471 |
Actions (login required)
 |
View Item |