Prameswary, Reny Redinta (2023) Studi Eksperimen Pengaruh Penempatan Elips Di Samping Sudu Advancing Terhadap Kinerja Turbin Angin Savonius “Studi Kasus untuk Jarak Penempatan Elips di Samping Sudu Advancing Y/D = 1,27 dengan Konfigurasi Ukuran Elips b/a = 1 dan 1/4 pada Kecepatan Angin 4, 5, 6, dan 7 m/s”. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan energi di Indonesia diperkirakan akan terus meningkat seiring dengan bertambahnya jumlah penduduk di setiap tahunnya. Peningkatan tersebut tidak sejalan dengan pasokan energi yang ada. Salah satu upaya yang dapat dilakukan adalah dengan menggunakan renewable energy. Energi angin di Indonesia memiliki potensi yang sangat besar dikarenakan Indonesia merupakan negara kepulauan. Berdasarkan pengukuran dan penelitian yang dilakukan oleh LAPAN dan BMKG, rata-rata kecepatan angin di Indonesia adalah 3 – 6 m/s. Potensi energi angin terbesar berada di wilayah Sidrap dan Janepento di Sulawesi Selatan karena dapat menghasilkan 200 MW. Turbin yang bisa digunakan untuk memanfaatkan energi dari kecepatan angin di Indonesia adalah turbin angin Savonius. Penelitian ini dilakukan sebagai upaya meningkatkan performa turbin angin Savonius, yaitu dengan meletakkan elips di samping sudu advancing.
Penelitian ini dilakukan dengan meletakkan elips di samping sudu advancing, konfigurasi ukuran elips yang digunakan adalah b/a sebesar 1 dan 1/4 dengan diameter turbin angin Savonius (D) sebesar 165,2 mm, diameter end plate (D0) sebesar 320 mm, diameter poros turbin (e) sebesar 19 mm, dan tinggi turbin (H) sebesar 295 mm. Penelitian ini dilakukan pada jarak pusat elips dengan pusat sudu advancing terhadap diameter turbin angin Savonius (Y/D) sebesar 1,27. Penelitian ini dilakukan pada variasi kecepatan angin 4, 5, 6, dan 7 m/s. Pada penelitian yang dilakukan ini, aliran angin dihasilkan oleh axial fan yang diberikan honeycomb untuk menjaga aliran tetap uniform. Untuk mengatur kecepatan aliran udara diperlukan voltage regulator dan kecepatan aliran angin diukur kembali dengana menggunakan anemometer. Pengukuran putaran menggunakan tachometer, pengukuran torsi statis menggunakan torquemeter, dan pengukuran torsi dinamis menggunakan brake dynamometer.
Hasil dari penelitian ini adalah untuk konfigurasi ukuran elips b/a = 1 memberikan hasil penurunan nilai terkecil coefficient of power pada kecepatan 6 m/s yaitu sebesar -10,55% dan coefficient of moment pada kecepatan 7 m/s sebesar -2,85% serta penurunan nilai terbesar coefficient of power pada kecepatan 5 m/s yaitu sebesar -20,23% dan coefficient of moment pada kecepatan 4 m/s -19,11%. Pada konfigurasi ukuran elips b/a = 1/4 memberikan hasil penurunan nilai terkecil coefficient of power pada kecepatan 6 m/s yaitu sebesar -6,82% dan coefficient of moment pada kecepatan 7 m/s sebesar -1,95% serta penurunan nilai terbesar coefficient of power pada kecepatan 5 m/s yaitu sebesar -16,58% dan coefficient of moment pada kecepatan 5 m/s -9,78%.
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Demand in Indonesia is expected to continue to increase as the population increases every year. This increase is not in line with the existing energy supply. One of the efforts that can be made is to use renewable energy. Wind energy in Indonesia has enormous potential because Indonesia is an archipelago. Based on measurements and research conducted by LAPAN and BMKG, the average wind speed in Indonesia is 3 - 6 m/s. The largest wind energy potential is in the Sidrap and Janepento areas in South Sulawesi because it can produce 200 MW. The turbine that can be used to utilize energy from wind speed in Indonesia is the Savonius wind turbine. This research was conducted as an effort to improve the performance of the Savonius wind turbine, namely by placing an elliptical cylinder next to the advancing blade.
This research was conducted by placing an elliptical cylinder next to the advancing blade, the elliptical cylinder size configuration used was b/a of 1 and 1/4 with the Savonius wind turbine diameter (D) of 165.2 mm, end plate diameter (D0) of 320 mm, turbine shaft diameter (e) of 19 mm, and turbine height (H) of 295 mm. This research was conducted at a distance of the center of the elliptical cylinder with the center of the advancing blade to the diameter of the Savonius wind turbine (Y/D) of 1.27. This research was conducted at wind speed variations of 4, 5, 6, and 7 m/s. In this research, the wind flow is generated by an axial fan which is given a honeycomb to keep the flow uniform. To adjust the air flow speed, a voltage regulator is required, and the wind flow speed is measured again using an anemometer. Measurement of rotation using a tachometer, static torque measurement using a torquemeter, and dynamic torque measurement using a brake dynamometer.
The results of this study are for the configuration of the bully elliptical cylinder size b/a = 1 gives the results of the smallest decrease in the coefficient of power at a speed of 6 m/s which is -10.55% and coefficient of moment at a speed of 7 m/s by -2.85% and the largest decrease in the coefficient of power at a speed of 5 m/s which is -20.23% and coefficient of moment at a speed of 4 m/s -19.11%. In the configuration of the bully elliptical cylinder size b/a = 1/4 gives the results of the smallest decrease in the value of the coefficient of power at a speed of 6 m/s which is -6.82% and coefficient of moment at a speed of 7 m/s by -1.95% and the largest decrease in the value of the coefficient of power at a speed of 5 m/s which is -16.58% and coefficient of moment at a speed of 5 m/s -9.78%.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Turbin angin Savonius, elips, torsi statis, dan torsi dinamis Savonius wind turbine, ellipse, static torque, and dynamic torque |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | RENY REDINTA PRAMESWARY |
| Date Deposited: | 25 Jul 2023 13:18 |
| Last Modified: | 25 Jul 2023 13:18 |
| URI: | http://repository.its.ac.id/id/eprint/99107 |
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