Ismail, Abdi (2016) Studi Eksperimental Pengaruh Jumlah Foil Terhadap Efisiensi Turbin Heliks Cascade Foil. Undergraduate thesis, Isntitut Teknologi Sepuluh Nopember.
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Abstract
Pada penelitian ini telah dilakukan studi eksperimental untuk
mengetahui pengaruh jumlah foil terhadap daya mekanik dan efisiensi
Turbin Heliks Cascade Foil. Data yang diperoleh dalam penelitian ini
ialah kecepatan sudut dan torsi dari 3 variasi jumlah foil (Turbin Heliks
3 foil, 6 foil, dan 9 foil) pada 3 variasi kecepatan arus (1,142 m/s, 1,228
m/s, dan 1,341 m/s). Variasi kecepatan arus didapatkan dari saluran
keluaran mata air Umbulan, Kabupaten Pasuruan, Jawa Timur.
Penambahan foil secara cascade dapat meningkatkan daya mekanik
turbin dalam luas sapuan yang sama. Pada kecepatan arus 1,341 m/s,
Turbin Heliks 3, 6, dan 9 foil menghasilkan daya mekanik secara
berturut-turut sebesar 104 watt, 116,8 watt, dan 133,6 watt. Turbin
Heliks 9 foil memiliki daya mekanik dan torsi tertinggi karena memiliki
momen inersia lebih tinggi daripada Turbin Heliks 6 dan 3 foil. Selain
itu, penambahan jumlah foil menyebabkan bertambahnya gaya lift yang
bekerja pada turbin. Turbin Heliks 9 foil memiliki lebih banyak foil,
sehingga memberikan gaya lift lebih besar dibandingkan dengan Turbin
Heliks 6 dan 3 foil. Penambahan foil secara cascade juga dapat
meningkatkan efisiensi Turbin Heliks. Pada kecepatan arus 1,142 m/s,
Turbin Heliks 3, 6, dan 9 foil menghasilkan efisiensi secara berturutturut
sebesar 15,2 %, 17,6 %, dan 19,9 %. Penambahan foil secara
cascade dapat meningkatkan ekstraksi energi arus air tanpa
memperbesar dimensi turbin.
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This experimental study has been conducted on influence of the number
of foils to the efficiency and mechanical power of Cascade Foil Helical
Turbine. The data in this study obtained the angular velocity and torque
of the number of foil (Helical 3 foil, 6 foil, and 9 foil Turbine) at 3
variations of flow velocity (1.142 m/s, 1.228 m/s, and 1.341 m/s).
Variation of flow velocity obtained from output channels of Umbulan
springs, Pasuruan, East Java. The addition of the cascade foil can
improve mechanical power of turbine in the same swept area. At the
flow velocity of 1.341 m/s, Helical 3, 6, and 9 foil Turbine produces
mechanical power respectively, 104 watts, 116.8 watt, and 133.6 watts.
Helical 9 foil Turbine has higher mechanical power and torque, because
it has a higher inertia moment than the Helical 6 and 3 foil turbine.
Moreover, the addition of the foil causes increased lift force acting on
the turbine. Helical 9 foil Turbine has more foil, thus it providing the
greater lift force than Helical 6 and 3 foil Turbine. The additions of
cascade foil can also improve the efficiency of Helical Turbine. At the
flow velocity of 1,142 m/s, the efficiency of Helical 3, 6, and 9 foil
Turbine respectively 15.2%, 17.6% and 19.9%. The addition of the
cascade foil can increase water flow energy extraction without
increasing the dimensions of the turbine.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSF 621.406 Ism s |
| Uncontrolled Keywords: | Turbin Heliks Cascade Foil, kecepatan sudut, torsi, daya mekanik, efisiensi, Cascade Foil Helical Turbine, angular velocity, torque, mechanical power, efficiency |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ799 Diesel motor--Electronic control. |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Anis Wulandari |
| Date Deposited: | 18 Aug 2017 03:49 |
| Last Modified: | 18 Aug 2017 03:49 |
| URI: | http://repository.its.ac.id/id/eprint/48651 |
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