Hakim, Muhammad Ichwanul (2023) Studi Eksperimen Pada Kinerja Turbin Angin Savonius Dengan Instalasi Silinder Sirkular Di Samping Advancing Blade dan Returning Blade. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Negara Indonesia merupakan salah satu negara yang memiliki kepadatan penduduk tertinggi di Asia Tenggara, efek yang dihasilkan salah satunya adalah meningkatnya kebutuhan energi listrik di Indonesia. Penggunaan bahan bakar fosil tidak terbarukan masih menjadi sumber utama dalam pemenuhan kebutuhan listrik tersebut, di mana efek samping bagi lingkungan sangat mengkhawatirkan. Energi yang lebih bersih diperlukan untuk mengurangi dampak lingkungan, salah satunya adalah memanfaatkan energi angin. Penelitian ini dilakukan guna meningkatkan efisiensi turbin dengan konfigurasi penelitian pertama yaitu dipasangnya silinder sirkular di depan returning blade, konfigurasi penelitian kedua dengan dipasangnya silinder sirkular di samping advancing blade, dan konfigurasi penelitian ketiga dengan memasang kedua silinder sirkular seperti pada dua konfigurasi sebelumnya. Tujuan penelitian ini dicapai dengan dilakukannya penelitian secara eksperimental. Turbin angin Savonius yang digunakan berdiameter sudu (D) sebesar 165,2 mm, tinggi turbin (H) sebesar 295 mm, diameter poros (b) sebesar 19 mm, serta diameter endplate sebesar 333,7 mm. Silinder sirkular yang digunakan sebagai pengontrol pasif aliran memilki rasio (d/D) = 0,5. Silinder sirkular tersebut ditempatkan di depan returning blade (S/D) sebesar 1,4, serta di samping advancing blade pada jarak (Y/D) 1,51. Penelitian dilakukan dengan memvariasikan kecepatan angin sebesar 5, 6 dan 7 m/s, menggunakan axial fan sebagai sumber angin. Pengukuran performa turbin dilakukan dengan pengukuran torsi dinamis menggunakan brake dynamometer, torsi statis dengan torque meter, serta kecepatan rotasi turbin dengan tachometer. Hasil penelitian ditunjukkan bahwa dilakukannya penelitian pada konfigurasi A dengan dipasangnya silinder sirkular di depan returning blade pada S/D = 1,4, dan penelitian konfigurasi C dengan menggabungkan konfigurasi A dan B dapat meningkatkan performa dan self-starting. Peningkatan CP(MAX) paling besar pada penelitian ini diperoleh pada penelitian konfigurasi B pada variasi kecepatan 7 m/s sebesar 23,15%, dengan nilai CP(MAX) = 0,093 pada λ = 0,668. Peningkatan nilai CM(MAX) pada penelitian ini diporoleh pada konfigurasi A pada variasi kecepatan 5 m/s sebesar 16,79% dengan nilai CM(MAX) = 0,168 pada λ = 0. Peningkatan kemampuan self-starting terjadi pada konfigurasi A dan B penelitian pada posisi (θ) tertentu, namun pada konfigurasi C performa turbin meningkat scara signifikan dengan tidak adanya nilai CTS negatif pada seluruh variasi kecepatan
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Indonesia is one of the countries that has the highest population density in Southeast Asia, the resulting effect is the increasing need for electrical energy in Indonesia. The use of non-renewable fossil fuels is still the main source in meeting these electricity needs, where the side effects for the environment are very worrying. Cleaner energy is needed to reduce environmental impacts, one of which is utilizing wind energy. This research was conducted to increase the efficiency of the turbine with the first research configuration by installing a circular cylinder in front of the returning blade, the second research configuration by installing a circular cylinder next to the advancing blade, and the third research configuration by installing both circular cylinders as in the previous two configurations. The objectives of this study were achieved by conducting experimental research. The Savonius wind turbine used has a blade diameter (D) of 165.2 mm, turbine height (H) of 295 mm, shaft diameter (b) of 19 mm, and endplate diameter of 333.7 mm. The circular cylinder used as a passive flow controller has a ratio (d/D) = 0.5. The circular cylinder is placed in front of the returning blade (S/D) of 1.4, and next to the advancing blade at a distance (Y/D) of 1.51. The research was conducted by varying the wind speed of 5, 6 and 7 m/s, using an axial fan as the wind source. Turbine performance measurements were carried out by measuring dynamic torque using a brake dynamometer, static torque with a torque meter, and turbine rotational speed with a tachometer. The results showed that research on configuration A by installing a circular cylinder in front of the returning blade at S/D = 1.4, and research on configuration C by combining configurations A and B can improve performance and self-starting. The greatest increase in CP(MAX) in this study was obtained in the configuration B study at a speed variation of 7 m/s by 23.15%, with a value of CP(MAX) = 0.093 at λ = 0.668. The increase in CM(MAX) value relative to the conventional Savonius turbine in this study was obtained in configuration A at a speed variation of 5 m/s by 16.79% with a CM(MAX) value = 0.168 at λ = 0. The increase in self-starting ability occurred in configurations A and B of the study at a certain position (θ), but in configuration C the turbine performance increased significantly with the absence of negative CTS values at all speed variations.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Coefficient of Power, Coefficient of Moment, Coefficient of Static Torque, Silinder Pengganggu, Turbin Angin Savonius |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Ichwanul Hakim |
| Date Deposited: | 23 Feb 2023 08:31 |
| Last Modified: | 23 Feb 2023 08:31 |
| URI: | http://repository.its.ac.id/id/eprint/97678 |
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