Setyawan, Mohamad Arief (2025) Studi Eksperimen Pengaruh Variasi Sudut Stagger 10°, 15°, 20° Dengan Rasio Diameter Runner & Basin 0,7 Pada Runner Stage-2 Terhadap Performa Gravitational Water Vortex Turbine Double-Stage. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Saat ini indonesia terus mengalami peningkatan kebutuhan listrik. Produksi energi listrik nasional masih didominasi dari PLTU berbahan bakar fosil (batubara dan minyak bumi). Salah satu langkah yang dapat dilakukan untuk mengurangi krisis sumber daya non-terbarukan sebagai sumber tenaga dengan menggantinya menjadi sumber daya terbarukan. Indonesia berpotensi sangat besar dalam penggunaan sumber daya terbarukan, yaitu salah satunya hydropower. Salah satu jenis pembangkit listrik yang menggunakan hydropower adalah Pembangkit Listrik Tenaga Mikro Hidro (PLTMH). Kondisi perairan Indonesia sangat cocok untuk pengoperasian PLTMH menggunakan turbin vortex karena tidak memerlukan head yang tinggi dan kapasitas yang besar. Mekanisme kerja PLTMH dengan turbin vortex adalah air mengalir melalui saluran menuju inlet rumah turbin yang berukuran besar kemudian bergerak secara tangensial menuju outlet. Penelitian dalam proyek akhir ini, bertujuan untuk menentukan nilai intensitas aliran vortex dan performa Gravitational Water Vortex Turbine (GWVT) Double-Stage menggunakan metode studi eksperimental. Proses-proses yang dilakukan pada proyek akhir ini adalah (1) proses design dan manufacturing, (2) pengumpulan data tentang GWVT, (3) analisis perhitungan dan grafik intensitas aliran vortex, serta performa. Pada proyek akhir ini dilakukan penelitian GWVT Double-Stage yang menggunakan basin tipe conical concave dengan inlet notch 20°, rasio diameter runner dengan basin 0,7, serta variasi sudut stagger runner stage-2 sebesar 10°, 15°, 20° pada berbagai kapasitas. Kesimpulan dari eksperimen ini runner stage-2 dengan sudut stagger 10° menghasilkan performa terbaik pada kapasitas 500 lpm dibandingkan dua variasi sudut stagger lainnya, didapatkan efisiensi dan daya turbin sebesar 36,88% dan 6,82 Watt. Selanjutnya, variasi sudut stagger 15° menghasilkan efisiensi dan daya turbin sebesar 33,13% dan 6,13 Watt, dan yang terendah variasi sudut stagger 20° menghasilkan efisiensi dan daya turbin sebesar 32,68% dan 6,04 Watt.
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Currently, Indonesia continues to experience an increase in electricity demand. National electrical energy production is still dominated by fossil-fuelled power plants (coal and petroleum). One of the steps that can be taken to reduce the crisis of non-renewable resources as a source of power by replacing them with renewable resources. Indonesia has enormous potential in the use of renewable resources, one of which is hydropower. One type of power plant that uses hydropower is the Micro Hydro Power Plant (PLTMH). The condition of Indonesian waters is very suitable for the operation of MHP using vortex turbines because it does not require high head and large discharge. The working mechanism of the PLTMH with a vortex turbine is that water flows through the channel to the inlet of the large turbine house and then moves tangentially towards the outlet. The research in this final project aims to determine the value of vortex flow intensity and Double-Stage Gravitational Water Vortex Turbine (GWVT) performance using the experimental study method. The processes carried out in this final project are (1) design and manufacturing process, (2) data collection about GWVT, (3) calculation and graphical analysis of vortex flow intensity, and performance. In this final project, GWVT Double-Stage research was conducted using a conical concave type basin with a 20° inlet notch, ratio of runner diameter to basin 0.7, and variations in runner stagger angle stage-2 of 10°, 15°, 20° at various capacities. The conclusion of this experiment is that the stage-2 runner with a stagger angle of 10° produces the best performance at a capacity of 500 lpm compared to the other two variations of stagger angle, obtained efficiency and turbine power of 36.88% and 6.82 Watt. Furthermore, 15° stagger angle variation produces turbine efficiency and power of 33.13% and 6.13 Watt, and the lowest stagger angle variation of 20° produces turbine efficiency and power of 32.68% and 6.04 Watt.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Double-Stage, Rasio Diameter Runner, Sudut Stagger, Turbin Vortex Double-Stage, Gravitational Water Vortex Turbine, Ratio of Runner Diameter, The Stagger Angle |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Mohamad Arief Setyawan |
| Date Deposited: | 30 Jul 2025 02:49 |
| Last Modified: | 30 Jul 2025 02:49 |
| URI: | http://repository.its.ac.id/id/eprint/123121 |
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