Maulana, Ahmad Fajar (2025) Studi Eksperimen Pengaruh Rasio Diameter Runner dan Basin (0.65, 0.7, 0.75) pada Stage Kedua Terhadap Performa Double-Stage Gravitational Water Vortex Turbine. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Ketergantungan Indonesia pada sumber energi tak terbarukan memiliki dampak lingkungan yang signifikan. Oleh karena itu sangat penting bagi Indonesia untuk mengembangkan energi terbarukan. Pembangkit listrik tenaga air, khususnya pembangkit listrik tenaga mini-hidro dan mikro-hidro memiliki potensi yang menjanjikan di Indonesia. Rencana pengembangan mini-hidro dan mikro-hidro di Indonesai mencapai 3 GW pada tahun 2025 dan 7 GW pada tahun 2050. Penelitian ini berfokus pada pengoptimalan kinerja pembangkit listrik mikrohidro dengan tipe turbin pusaran air gravitasi atau Gravitational Water Vortex Turbine (GWVT). Turbin ini cocok di perairan Indonesia dikarenakan tidak membutuhkan head dan kapasitas yang tinggi. Metode eksperimen digunakan untuk mendapatan performa turbin vortex double-stage. Tahap-tahap yang dilakukan adalah sebagai berikut : 1) Studi literatur dan observasi, 2) Proses desain dan manufaktur, 3) Pengumpulan data turbin vortex, dan 4) Analisis perhitungan dan grafik intensitas aliran vortex serta performa turbin. Eksperimen menggunakan turbin vortex dengan basin conical concave dari penelitian sebelumnya. Runner pertama menggunakan geometri yang memiliki performa terbaik pada penelitian sebelumnya dengan rasio diameter runner dan basin 0.7 dan sudut stagger 0°. Variasi dilakukan pada runner kedua dengan rasio diameter runner dan basin 0.65, 0.7, dan 0.75 serta sudut stagger 0°. Kombinasi rasio yang optimal diharapkan akan meningkatkan performa turbin vortex double-stage, dengan efisiensi dan daya yang lebih tinggi dibandingkan konfigurasi turbin vortex sebelumnya. Hasil yang didapatkan adalah performa double-stage lebih baik daripada single-stage. Rasio runner stage-2 0,75 memiliki performa terbaik dibandingkan dengan varasi rasio runner stage-2 yang lain.
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Indonesia's dependence on non-renewable energy sources has a significant environmental impact. Therefore, it is very important for Indonesia to develop renewable energy. Hydroelectric power plants, especially mini-hydro and micro-hydro power plants, have promising potential in Indonesia. The plan to develop mini-hydro and micro-hydro in Indonesia reaches 3 GW by 2025 and 7 GW by 2050. This research focuses on optimizing the performance of microhydro power plants with a Gravitational Water Vortex Turbine(GWVT) type. This turbine is suitable in Indonesian waters because it does not require a high head and capacity. The experimental method was used to obtain the performance of a double-stage vortex turbine. The stages carried out are as follows: 1. Literature study and observation, 2. Design and manufacturing process, 3. Collection of vortex turbine data, and 4. Analysis of calculations and graphs of vortex flow intensity and turbine performance. The experiment uses a vortex turbine with a conical concave basin from the previous study. The first runner uses the geometry that has the best performance in the previous study with a ratio of runner and basin diameter of 0.7 and stagger angle of 0°. Variations were carried out on the second runner with a runner and basin diameter ratio of 0.65, 0.7, and 0.75 with a stagger angle of 0°. The optimal ratio combination is expected to improve the performance of the double-stage vortex turbine, with higher efficiency and power than previous vortex turbine configurations. The result is that double-stage performance is better than singlestage. The stage-2 runner ratio of 0.75 has the best performance compared to other stage-2 runner ratio variations.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Double-Stage, Rasio Diameter, Runner, Turbin, Vortex Diameter Ratio, Double-Stage, Runner, Turbine, Vortex |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TJ Mechanical engineering and machinery > TJ870 Hydraulic turbines. |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Ahmad Fajar Maulana |
| Date Deposited: | 29 Jul 2025 01:42 |
| Last Modified: | 29 Jul 2025 01:43 |
| URI: | http://repository.its.ac.id/id/eprint/121796 |
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