Radita, Prasetyo (2025) Studi Numerik Tiga Turbin Savonius Hidrokinetik dalam Konfigurasi Staggered Co-Rotating Pada Kanal Air Pendingin Pltu Paiton. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan akan sumber energi terbarukan semakin mendesak seiring meningkatnya konsumsi energi dan isu perubahan iklim global. Pemanfaatan potensi energi hidrokinetik menjadi salah satu solusi untuk mendukung target transisi energi bersih. PLTU Paiton memiliki kanal air pendingin dengan debit dan kecepatan aliran yang cukup besar, sehingga berpotensi dimanfaatkan untuk pembangkitan energi tambahan melalui pemasangan turbin hidrokinetik. Dalam penelitian ini dikaji kinerja tiga turbin Savonius hidrokinetik dalam konfigurasi staggered co-rotating pada kanal air pendingin PLTU Paiton. Penelitian ini dilakukan dengan metode simulasi numerik 2D menggunakan perangkat lunak ANSYS Fluent. Penelitian difokuskan untuk mengevaluasi pengaruh jarak antar turbin terhadap performa sistem, dengan variasi jarak horizontal (S/D) sebesar 2,09; 5,19; 12,11; dan 17,30 serta jarak vertikal (T/D) sebesar 2,09; 4,19; dan 6,28. Simulasi dilakukan dengan variasi Tip Speed Ratio (TSR) dari 0,2 hingga 1,2. Parameter yang dianalisis meliputi Coefficient of Power (CoP), Coefficient of Moment (Cm), Coefficient of Static Torque (Cts), dan distribusi tekanan (Cp) serta kontur kecepatan dan tekanan pada masing-masing konfigurasi. Hasil menunjukkan bahwa konfigurasi tiga turbin Savonius dengan susunan staggered dan berputar searah memberikan pengaruh signifikan terhadap peningkatan performa sistem. Jarak antar turbin yang terlalu dekat menyebabkan gangguan aliran dan menurunkan efisiensi, sedangkan jarak terlalu jauh membuat efek sinergi antar turbin menurun. Konfigurasi terbaik ditemukan pada variasi S/D = 2,09 dan T/D = 6,28 yang menghasilkan CoP sistem tertinggi sebesar 0,217, lebih tinggi dibandingkan CoP turbin tunggal sebesar 0,164. Susunan ini terbukti mampu memanfaatkan aliran wake secara optimal sehingga menghasilkan kinerja sistem yang paling efisien.
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The demand for renewable energy sources is becoming increasingly urgent due to the growing energy consumption and global climate change issues. Utilizing hydrokinetic energy potential is one of the solutions to support the transition to clean energy. The cooling water channel of the Paiton coal-fired power plant has a considerable flow rate and velocity, making it a promising site for additional power generation through the installation of hydrokinetic turbines. This study investigates the performance of three hydrokinetic Savonius turbines arranged in a staggered co-rotating configuration in the cooling water channel of PLTU Paiton. The research was conducted using a 2D numerical simulation method with ANSYS Fluent software. The study focused on evaluating the effect of the distance between turbines on system performance, with horizontal spacing variations (S/D) of 2.09, 5.19, 12.11, and 17.30, and vertical spacing variations (T/D) of 2.09, 4.19, and 6.28. Simulations were carried out across a range of Tip Speed Ratios (TSR) from 0.2 to 1.2. The analyzed parameters included the Coefficient of Power (CoP), Coefficient of Moment (Cm), Coefficient of Static Torque (Cts), as well as pressure distribution (Cp), and velocity and pressure contours for each configuration. The results show that the three Savonius turbines in a staggered and co-rotating arrangement significantly improved system performance. Too close a spacing caused flow disturbances and reduced efficiency, while too wide a spacing weakened the synergy between turbines. The optimal configuration was found at S/D = 2.09 and T/D = 6.28, which yielded the highest system CoP of 0.217—higher than the single turbine CoP of 0.164. This arrangement proved effective in utilizing the wake flow optimally, resulting in the most efficient system performanc
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Turbin Savonius, Hidrokinetik, Staggered, Co-rotating, Kanal Air Pendingin, PLTU Paiton, Savonius Turbine, Hydrokinetic, Staggered, Co-rotating, Cooling Water Channel, Paiton Power Plant. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis |
| Depositing User: | Prasetyo Radita |
| Date Deposited: | 01 Aug 2025 02:23 |
| Last Modified: | 01 Aug 2025 02:23 |
| URI: | http://repository.its.ac.id/id/eprint/124001 |
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