Studi Numerik Empat Turbin Savonius Hidrokinetik Dalam Konfigurasi Staggered Co-rotating Pada Kanal Air Pendingin PLTU Paiton

Utama, Mohammad Riko Putra (2025) Studi Numerik Empat 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 energi listrik yang meningkat setiap tahun seiring dengan pertumbuhan ekonomi, populasi, dan sektor industri menuntut adanya transisi dari energi fosil ke energi baru terbarukan (EBT) untuk mendukung target Net Zero Emissions (NZE) pada tahun 2060. Salah satu upaya ialah memanfaatkan kanal pendingin di PLTU Paiton dengan memasang empat turbin hidrokinetik Savonius dalam konfigurasi staggered co-rotating, yang bertujuan untuk menganalisa performa turbin hidrokinetik yang dipasang dan mengetahui fenomena aliran yang terjadi di sekitar turbin. Pada penelitian ini dilakukan dengan metode simulasi numerik menggunakan Software ANSYS, model geometri yang digunakan 2 dimensi, aliran unsteady, model viscous k- realizable (RKE), dan variasi TSR sebesar 0.2, 0.4, 0.6, 0.8, 1.0, dan 1.2. Turbin Savonius disusun secara staggered co-rotating dengan variasi jarak antar turbin (S/D) sebesar 2.10, 3.46, 5.19, 6.92, 8.65, 10.38, 12.11, 13.84, 15.57, dan 16,86. Jarak inlet dengan pusat turbin bagian depan sebesar 10L dan jarak outlet dengan pusat turbin belakang sebesar 15L. Penelitian ini menampilkan performa empat turbin Savonius yang disusun secara staggered co-rotating dalam grafik Coefficient of Power (CoP) dan Coefficient of Moment (CM) terhadap TSR, Coefficient of Pressure (CP) terhadap sumbu axis (X/L), Coefficient of Static Torque (CTs) terhadap sudut azimuth, kontur tekanan dan kontur kecepatan. Hasil yang diperoleh dari studi empat turbin Savonius yang disusun dengan konfigurasi staggered dan berputar co-rotating, menunjukkan bahwa semakin besar jarak antar turbin, maka kinerja turbin akan semakin meningkat. Pada jarak S/D = 16.86, masing-masing turbin sudah tidak saling mempengaruhi satu sama lain, dan kinerja masing-masing turbin sudah menyerupai turbin tunggal, sehingga menghasilkan kinerja turbin yang optimal.
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The increasing demand for electrical energy annually, coupled with economic, population, and industrial growth, demands a transition from fossil fuels to renewable energy (NRE) to support the Net Zero Emissions (NZE) target by 2060. One effort is to utilize cooling channels at the Paiton PLTU by installing four Savonius hydrokinetic turbines in a staggered co-rotating configuration. This aims to analyze the performance of the installed hydrokinetic turbines and understand the flow phenomena occurring around the turbines. This research was conducted using a numerical simulation method using ANSYS software. The geometry model used was 2-dimensional, unsteady flow, a realizable viscous k- model (RKE), and TSR variations of 0.2, 0.4, 0.6, 0.8, 1.0, and 1.2. The Savonius turbines were arranged in a staggered co-rotating configuration with varying inter-turbine spacing (S/D) of 2.10, 3.46, 5.19, 6.92, 8.65, 10.38, 12.11, 13.84, 15.57, and 16.86. The inlet distance from the center of the front turbine was 10L and the outlet distance from the center of the rear turbine was 15L. This study presents the performance of four Savonius turbines arranged in a staggered co-rotating configuration in graphs of the Coefficient of Power (CoP) and Coefficient of Moment (CM) against TSR, Coefficient of Pressure (CP) against the (X/L) axis, Coefficient of Static Torque (CTs) against the azimuth angle, pressure contour, and velocity contour. The results obtained from the study of four Savonius turbines arranged in a staggered and co-rotating configuration indicate that the greater the distance between the turbines, the greater the turbine performance. At a distance of S/D = 16.86, each turbine no longer influences each other, and the performance of each turbine resembles a single turbine, resulting in optimal turbine performance.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Studi Numerik, Turbin Savonius Hidrokinetik, Konfigurasi Staggered, Coefficient of Power, Coefficient of Moment
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General)
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User:	Mohammad Riko Putra Utama
Date Deposited:	23 Jul 2025 05:54
Last Modified:	23 Jul 2025 05:54
URI:	http://repository.its.ac.id/id/eprint/120587

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