Purba, Anthomy (2023) Studi Eksperimen Kinerja Turbin Angin Savonius dengan Instalasi Silinder Sirkular di Samping Sudu Advancing dan di Depan Sudu Returning. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Jumlah penduduk di Indonesia mengalami peningkatan setiap tahun dan akhirnya menyebabkan peningkatan kebutuhan energi. Karena itu diperlukan pemanfaatan energi baru dan terbarukan sehingga dapat menggantikan energi fosil yang semakin terbatas. Salah satu sumber energi terbarukan yang berpotensi adalah energi angin. Namun, kecepatan angina di Indonesia cukup rendah. Turbin Savonius merupakan suatu alat yang mampu untuk memanen energiangin dalm kecepatan rendah. Turbin angin Savonius meniliki konstruksi yang cukup sederhana dan dapat beroperasi dalam kecepatan rendah. Namun, efisiensi dari turbin angin Savonius lebih rendah dibandingkan dengan turbin angin lainnya sehingga dilakukan penelitian untuk dapat meningkatkan performa dari turbin angin Savonius. Untuk itu dilakukan upaya peningkatan efisiensi turbin Savonius dengan memasang silinder sirkular di samping sudu advancing dan di depan sudu returning turbin.
Penelitian ini dilakukan dengan eksperimen dalam skala laboratorium menggunakan tiga jenis konfigurasi. Pada konfigurasi pertaman, silinder sirkular diletakkan silinder sirkular diletakkan di depan sudu returning dengan S/D = 1,4. Pada konfigurasi kedua, di samping sudu advaning dengan Y/D = 1,82. Dan pada konfigurasi ketiga, silinder sirkular diletakkan di samping sudu advancing dengan Y/D = 1,82 dan di depan sudu returning dengan S/D = 1,4. Turbin Savonius memiliki tinggi (H) = 295 mm, diameter poros (e) = 19 mm, dan diameter sudu (D) = 165,2 mm serta silinder sirkular dengan panjang (h) = 490 mm dan diameter (d) = 88,18 mm atau d/D = 0,5. Kecepatan angin yang digunakan dalam penelitian ini divariasikan sebesar 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.
Hasil yang diperoleh dalam penelitaian ini adalah bahwa penempatan silinder pengganggu di samping advancing blade efektif untuk meningkatkan nilai coefficient of power pada kecepatan 5 m/s dan 7 m/s. Penggunaan silinder penganggu di depan returning blade hanya efektif pada kecepatan 5 m/s. Dan penggunaan silinder pengganggu dikedua buah sudu yaitu di samping advancing blade dan didepan returning blade efektif pada kecepatan 5 m/s dan 7 m/s untuk meningkatkan nilai coefficient of power. Nilai coefficient of power tertinggi sebesar 0,08 atau mengalami kenaikan 5,68% dibandingkan dengan turbin angin Savonius tanpa silinder pengganggu pada kecepatan 7 m/s. Maka dapat dikatakan bahwa kinerja turbin angin savonius pada konfigurasi C efektif pada kecepatan angin tinggi.
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The population in Indonesia has increased every year and eventually led to an increase in energy needs. Due to the limited amount of energy, it is necessary to use new and renewable energy so that it can replace fossil energy which is increasingly limited. The potential renewable energy sources is wind energy. Utilization of wind energy in Indonesia can be done with Savonius wind turbine which is in accordance with the conditions of wind speeds in Indonesia which tend to be low. Savonius wind turbine has a fairly simple construction and can operate at low speeds. The efficiency of the Savonius wind turbine is lower than other wind turbines, so research is being done to improve the performance of the Savonius wind turbine. The efforts made is to install circular cylinders beside the advancing blades and in front of the returning turbine blades.
This research was conducted with experiments on a laboratory scale using three types of configurations. In the first configuration, the circular cylinder is placed in front of the returning vane with S/D = 1.4. In the second configuration, the circular cylinder is placed beside the advaning blade with Y/D = 1.82. And in the third configuration, the circular cylinder is placed next to the advancing blade with Y/D = 1.82 and in front of the returning blade with S/D = 1.4. Savonius turbine has a height (H) = 295 mm, shaft diameter (e) = 19 mm, and blade diameter (D) = 165.2 mm and circular cylinder with length (h) = 490 mm and diameter (d) = 88, 18 mm or d/D = 0.5. The wind speed used in this study was varied by 5, 6, and 7 m/s. The wind flow from the axial fan is kept uniform with honeycomb and the speed is regulated by adjusting the voltage from the voltage regulator. Wind speed was measured with an anemometer, static torque with a torquemeter, turbine rotation speed with a tachometer, and dynamic torque with a brake rope dynamometer.
The results obtained in this study are that the placement of the interfering cylinder beside the advancing blade is effective in increasing the value of the coefficient of power at speeds of 5 m/s and 7 m/s. The use of a disturbance cylinder in front of the returning blade is only effective at a speed of 5 m/s. And the use of interfering cylinders on both blades, namely beside the advancing blade and in front of the returning blade is effective at speeds of 5 m/s and 7 m/s to increase the value of the coefficient of power. The highest coefficient of power value is 0.08 or an increase of 5.68% compared to the Savonius wind turbine without an interfering cylinder at a speed of 7 m/s. So it can be said that the performance of the savonius wind turbine in configuration C is effective at high wind speeds.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Turbin Angin Savonius, Silinder Sirkular, Coefficient of Power, Coefficient of Moment. Coefficient Static Torque Savonius wind turbine, cylinder as bluff body, coefficient of power, coefficient of moment, coefficient of static torque |
| Subjects: | T Technology > TJ Mechanical engineering and machinery 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: | Anthomy Purba |
| Date Deposited: | 16 Feb 2023 03:57 |
| Last Modified: | 16 Feb 2023 03:57 |
| URI: | http://repository.its.ac.id/id/eprint/97395 |
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