RIFKY FAHROZA, . (2026) ANALISIS PENGARUH JUMLAH BLADE TURBIN CROSSFLOW TERHADAP KINERJA SISTEM COMPRESSED AIR GRAVITY ENERGY STORAGE (CA-GES). Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Pengembangan energi terbarukan membutuhkan sistem penyimpanan energi yang mampu menyimpan dan mengembalikan energi secara efektif. Salah satu teknologi yang dapat dikembangkan adalah Compressed Air-Gravity Energy Storage (CA-GES), yang memanfaatkan udara bertekanan untuk mendorong air menuju turbin sehingga menghasilkan energi listrik. Penelitian ini bertujuan untuk menganalisis pengaruh variasi jumlah blade turbin Crossflow terhadap kinerja sistem CA-GES. Penelitian dilakukan secara eksperimen menggunakan prototipe CA-GES skala laboratorium dengan variasi jumlah blade sebanyak 21, 23, dan 25 blade serta tekanan udara 0,3 MPa, 0,35 MPa, dan 0,4 MPa. Parameter yang dianalisis meliputi daya listrik, waktu discharging, energi total discharging, energi mekanis, dan efisiensi sistem. Hasil penelitian menunjukkan bahwa variasi jumlah blade memengaruhi daya listrik dan efisiensi sistem, sedangkan waktu discharging lebih dipengaruhi oleh tekanan udara. Pada tekanan 0,3 MPa, daya tertinggi diperoleh pada 21 blade sebesar 3,449 W dengan efisiensi 26%. Pada tekanan 0,35 MPa, 25 blade menghasilkan daya sebesar 4,682 W, energi total discharging sebesar 0,191 Wh, dan efisiensi tertinggi sebesar 29%. Sementara itu, daya listrik tertinggi sebesar 4,701 W diperoleh pada 25 blade dengan tekanan 0,4 MPa, dengan efisiensi sebesar 17%. Berdasarkan hasil tersebut, konfigurasi 25 blade pada tekanan 0,35 MPa merupakan kondisi paling optimal berdasarkan efisiensi sistem, sedangkan konfigurasi 25 blade pada tekanan 0,4 MPa menghasilkan daya listrik tertinggi.***** The development of renewable energy requires energy storage systems capable of storing and delivering energy effectively. One technology that can be developed is Compressed Air-Gravity Energy Storage (CA-GES), which utilizes compressed air to drive water toward a turbine to generate electrical energy. This study aims to analyze the effect of variations in the number of blades of a Crossflow turbine on the performance of a CA-GES system. The study was conducted experimentally using a laboratory-scale CA-GES prototype with variations in the number of blades, namely 21, 23, and 25 blades, and air pressures of 0.3 MPa, 0.35 MPa, and 0.4 MPa. The parameters analyzed included electrical power, discharging time, total discharging energy, mechanical energy, and system efficiency. The results showed that variations in the number of blades affected the electrical power and system efficiency, while the discharging time was more strongly influenced by air pressure. At 0.3 MPa, the highest power was obtained with 21 blades, reaching 3.449 W with an efficiency of 26%. At 0.35 MPa, 25 blades produced a power output of 4.682 W, total discharging energy of 0.191 Wh, and the highest efficiency of 29%. Meanwhile, the highest electrical power of 4.701 W was obtained with 25 blades at 0.4 MPa, with an efficiency of 17%. Based on these results, the configuration of 25 blades at 0.35 MPa was the most optimal condition in terms of system efficiency, while the configuration of 25 blades at 0.4 MPa produced the highest electrical power.
| Item Type: | Thesis (Sarjana) |
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| Additional Information: | 1). Dr. Ir. Ragil Sukarno, M.T., IPM. ; 2). Dr. Darwin Rio Budi Syaka, M.T. |
| Subjects: | Teknologi dan Ilmu Terapan > Teknik Energi > Energi Listrik Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik Teknologi dan Ilmu Terapan > Teknik Energi |
| Divisions: | FT > S1 Teknik Mesin |
| Depositing User: | Rifky Fahroza . |
| Date Deposited: | 21 Aug 2026 02:44 |
| Last Modified: | 21 Aug 2026 02:44 |
| URI: | http://repository.unj.ac.id/id/eprint/72534 |
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