Diandri, Dessideria (2023) Studi Eksperimental Pengaruh Pemasangan Elips Di Dekat Sudu Advancing Terhadap Kinerja Turbin Angin Savonius “Studi Kasus Untuk Jarak Y/D =1,5; Dengan Ukuran Elips B/A = 2 Dan 1 Pada Kecepatan Angin 4;5;6; Dan 7 M/S”. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan energi di Indonesia akan semakin meningkat seiring dengan bertambahnya jumlah penduduk. Peningkatan tersebut berbanding terbalik dengan persediaan bahan bakar fosil yang ada. Untuk memenuhi kebutuhan energi, diperlukan pemanfaatan energi baru terbaharukan (EBT) yang memiliki potensi melimpah, salah satunya energi angin. Salah satu cara pemanenan energi angin adalah menggunakan turbin angin Savonius yang sesuai dengan kecepatan angin di Indonesia yang cenderung rendah. Turbin ini memiliki konstruksi sederhana dan dapat beroperasi dengan kecepatan putaran rendah, tetapi memiliki efisiensi yang lebih rendah dibanding dengan jenis turbin lain. Oleh karena itu, dilakukan penelitian untuk mengetahui peforma turbin angin Savonius dengan memasang silinder penganggu di dekat sudu advancing turbin. Eksperimen skala laboratorium dilakukan dengan dua macam konfigurasi. Pada konfigurasi pertama rasio diameter dari silinder penganggu B/A=1 dengan Y/D=1,5. Pada konfgurasi kedua rasio diameter silinder penganggu b/a=2 dengan Y/D=1,5. Digunakan turbin Savonius dengan tinggi (H) = 295 mm, diameter poros (e) = 19 mm, dan diameter sudu (D) = 165,2 mm serta silinder penganggu dengan panjang (h) = 490 mm dan diameter (X) = 82,6 mm atau B/A = 1 dan B/A= 2. Kecepatan angin divariasikan sebesar 4, 5, 6, dan 7 m/s. Aliran angin dari axial fan dijaga keseragamannya dengan honeycomb dan diatur kecepatannya dengan mengatur tegangan dari voltage regulator. Kecepatan angin diukur dengan anemometer, torsi statis dengan torquemeter, kecepatan putaran turbin dengan tachometer, dan torsi dinamis dengan brake rope dynamometer. Dilakukan analisis performa turbin berupa coefficient of moment dancoefficient of power. Berdasarkan hasil analisis data performa turbin angin Savonius, pemasangan elips dengan konfigurasi pertama dengan b/a = 1 memberikan peningkatan signifikan pada kecepatan angin 6 m/s terhadap coefficient of power sebesar 26,25% dan coefficient of moment sebesar 12,68% dan mampu meningkatkan kemampuan self-starting turbin sebesar 49,01%. Selain itu, pemasangan silinder penganggu dengan dengan kofigurasi kedua degan b/a= 2 meningkatkan coefficient of power sebesar 19,8% dan coefficient of moment sebesar 27,61% pada kecepatan 5 m/s, dan terjadi penurunan nilai coefficient of power pada kecepatan 7 m/s yaitu sebesar 21,56% dan coefficient of moment pada kecepatan 6 m/s sebesar -12,24%. Tetapi mampu meningkatkan kemampuan self-starting turbin untuk seluruh variasi kecepatan angin
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The energy demand in Indonesia will increase along with the growing population, which is in contrast to the available fossil fuel reserves. To fulfill the energy demand, the utilization of renewable energy sources (EBT) that have abundant potential is necessary, one of which is wind energy. One way to harness wind energy is by using Savonius wind turbines that are suitable for the low wind speeds in Indonesia. These turbines have a simple construction and can operate at low rotational speeds, but have lower efficiency compared to other types of turbines. Therefore, research was conducted to determine the performance of Savonius wind turbines by installing a disrupting cylinder near the advancing blade. A laboratory-scale experiment was conducted with two different configurations. In the first configuration, the ratio of the diameter of the disrupting cylinder B/A=1 with Y/D=1.5, while in the second configuration, the ratio was B/A=2 with Y/D=1.5. A Savonius turbine with a height (H) of 295 mm, a shaft diameter (e) of 19 mm, and a blade diameter (D) of 165.2 mm was used, along with a disrupting cylinder with a length (h) of 490 mm and a diameter (X) of 82.6 mm for B/A=1 and B/A=2. Wind speeds were varied at 4, 5, 6, and 7 m/s. The wind flow from the axial fan was kept uniform with a honeycomb and its speed was adjusted by regulating the voltage of the voltage regulator. Wind speed was measured using an anemometer, static torque with a torque meter, turbine rotational speed with a tachometer, and dynamic torque with a brake rope dynamometer. Turbine performance analysis was conducted in the form of the coefficient of moment and coefficient of power. Based on the results of data analysis of Savonius wind turbine performance, the installation of an ellipse with the first configuration with b/a = 1 provides a significant increase at wind speed m/s to the coefficient of power by 26.25% and coefficient of moment by 12.68% and is able to increase the self-starting ability of the turbine by 49.01%. In addition, the installation of a circular cylinder with the second cofiguration with b/a = 2 increases the coefficient of power by 19.8% and the coefficient of moment by 27.61% at a speed of 5 m/s, and there is a decrease in the value of the coefficient of power at a speed of 7 m/s which is 21.56% and the coefficient of moment at a speed of 6 m/s by -12.24%. But it is able to increase the self-starting ability of the turbine for all wind speed variations.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Turbin Angin Savonius, Silinder Penganggu, Torsi Statis, Torsi Dinamis; Savonius Wind Turbine, Cylinder Disruptor, Static Torque, Dynamic Torque |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Dessideria Diandri |
| Date Deposited: | 25 Aug 2023 06:28 |
| Last Modified: | 25 Aug 2023 06:28 |
| URI: | http://repository.its.ac.id/id/eprint/100426 |
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