Yamin, Lazuardhi Rahim (2020) Studi Eksperimen Pengaruh Variasi Ukuran Diameter Silinder Pengganggu Di Depan Sisi Returning Blade Terhadap Kinerja Turbin Angin Savonius “Studi Kasus Peletakkan dan Ukuran Silinder Pengganggu S/D = 2,2; 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 = 9,7 x 10^4 dan 13,6 x 10^4”. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02111540000100-Undergraduate_Thesis.pdf Download (4MB) | Preview |
Abstract
Berdasarkan Statistik Ketenagalistrikan 2017 Edisi No. 31 Tahun Anggaran 2018, di akhir tahun 2017, sebanyak 70,48% energi yang dihasilkan berasal dari sumber energi tak terbarukan. Sedangkan sumber energi non-fosil seperti tenaga air, angin, surya, dan lainnya hanya sebesar 29,51%. Hal ini menunjukkan Indonesia masih sangat bergantung pada sumber energi tak terbarukan. Konsekuensi dari eksploitasi sumber energi tak terbarukan yaitu dapat merusak lingkungan. Sejak tahun 2013-2017 Pembangkit Listrik Tenaga Bayu (PLTB) hanya menghasilkan energi listrik dengan kapasitas 0.43 MW tiap tahunnya. Indonesia mempunyai kecepatan angin yang relatif rendah yaitu sebesar 2-6 m/s. Turbin Savonius merupakan pilihan yang tepat untuk angin dengan kecepatan rendah. Selain dapat menghasilkan energi listrik, turbin angin juga memiliki potensi tinggi karena pembangkit jenis ini tidak menghasilkan polusi. Pada penelitian ini digunakan turbin angin Savonius yang memiliki sudu dengan diameter turbin (D) sebesar 167,1 mm, diameter end plate (Do) sebesar 320 mm, tinggi (H) sebesar 298 mm, dan diameter poros (b) sebesar 19 mm. Silinder pengganggu dipasang di depan returning blade dengan variasi diameter silinder pengganggu terhadap diameter sudu turbin (d/D) sebesar 0,1; 0,2; 03; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9; dan 1,0. Silinder pengganggu ini diletakkan dengan jarak terhadap diameter sudu turbin (S/D) sebesar 2,2. Selain itu digunakan variasi bilangan Reynolds sebesar 9,7 x 10^4 dan 13,6 x 10^4. Silinder pengganggu digunakan untuk mengurangi gaya drag yang terjadi pada returning blade. Untuk sumber alirannya digunakan axial fan dan digunakan honeycomb untuk penyeragam aliran yang menuju turbin angin Savonius. Pada penelitian ini alat ukur yang digunakan adalah anemometer sebagai pengukur kecepatan aliran, torque meter sebagai pengukur torsi statis, tachometer sebagai pengukur keepatan putar turbin, dan brake dynamometer sebagai pengukur torsi dinamis. Hasil yang didapatkan dari penelitian ini adalah bahwa pemberian silinder penghalang pada S/D = 2,2; d/D = 0,5 dan Re = 9,7 x 10^4 paling efektif meningkatkan performa turbin angin Savonius dibandingkan dengan performa turbin angina Savonius tanpa penghalang. Hal ini dibuktikan dengan meningkatnya nilai coefficient of power maksimum sebesar 38,15%, coefficient of moment maksimum sebesar 19,43%. Selain itu, pemberian silinder penghalang pada S/D = 2,2 dan semua variasi d/D dan Re mampu meningkatkan kemampuan self-starting turbin angin Savonius di semua posisi angular sudu turbin dibandingkan dengan turbin angin Savonius tanpa pengganggu.
==================================================================================================================================
Based on Electricity Statistics 2017 Edition No. 31 Fiscal Year 2018, at the end of 2017, 70.48% of the energy produced came from non-renewable energy sources while non-fossil energy sources such as hydropower, wind, solar, and others amounted to only 29.51%. This report shows that Indonesia is still very dependent on non-renewable energy sources. The consequence of exploitation of non-renewable energy sources is that can damage the environment. From 2013 throughout 2017, wind power plant only has the capacity to produce electricity of 0.43 MW annually. Since Indonesia has a relatively low wind speed of 2-6 m/s, Savonius wind turbine is the right choice for this matter. Not only able to produce electricity, Savonius wind turbine also has high potential because this type of plant does not produce pollution. In this research, two bladed Savonius wind turbine with a turbine diameter (D) of 167.1 mm, end plate diameter (Do) of 320 mm, height (H) of 298 mm, and shaft diameter (b) of 19 mm. Circular cylinder was installed in front of the returning blade with variations in the diameter of the circular cylinder to the diameter of the turbine blade (d / D) of 0.1; 0.2; 03; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; and 1.0. This circular cylinder was placed with a distance (S/D) of 2.2 and variations of Reynolds numbers of 9,7 x 104 and 13,6 x 10^4. Circular cylinder was used to reduce the drag force that occurs on the returning blade. Axial fan was used as wind flow sources and honeycomb wass used to uniform the flow to the Savonius wind turbine. In this study, the measurment instruments that were used were anemometer as a measure of flow velocity, torque meter as a gauge of static torque, tachometer as a gauge of turbine rotational speed, and brake dynamometer as a dynamic torque gauge. The results obtained from this research were that the provision of a circular cylinder with S/D = 2.2; d / D = 0.5 and Re = 9,7 x 10^4 are most effective in improving the performance of Savonius wind turbine compared to the performance of Savonius wind turbine without circular cylinder. This statement was proven by the increased value of the maximum coefficient of power of 38.15%, the maximum coefficient of moment of 19.43%. Moreover, the provision of circular cylinder in front of returning blade with S / D = 2.2 and all variations of d/D and Reynolds numbers were able to improve the self-starting ability of Savonius wind turbines in all angular positions of turbine blades compared to Savonius wind turbines without circular cylinder.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSM 621.406 Yam s-1 2020 |
| Uncontrolled Keywords: | Turbin Angin Savonius, coefficient of power, coefficient of moment, torsi statis, torsi dinamis. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics 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: | Lazuardhi Rahim Yamin |
| Date Deposited: | 25 Jan 2024 07:55 |
| Last Modified: | 25 Jan 2024 07:55 |
| URI: | http://repository.its.ac.id/id/eprint/73418 |
Actions (login required)
 |
View Item |