Perancangan Turbin Sumbu Horizontal (HAT) Hidrokinetik untuk Arus Laut Kecepatan Rendah

Bastomi, M. Akhsan Nafi' (2021) Perancangan Turbin Sumbu Horizontal (HAT) Hidrokinetik untuk Arus Laut Kecepatan Rendah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Di Indonesia, potensi energi terbarukan sangat menjanjikan.Berdasarkan data dari Asosiasi Energi Laut Indonesia (ASELI), potensi teknis pemanfaatan sumber daya laut sebagai energi listrik di Indonesia mencapai 727.000 MW. Kecepatan arus di Indonesia rata-rata tergolong rendah, umumnya memiliki kecepatan kurang dari 1,5 m/s seperti pada wilayah di Perairan Palalawan dan Indragiri Hilir, Provinsi Riau, yang memiliki kecepatan arus berkisar antara 0,5 – 1,2 m/s. Pembangkit listrik Tenaga Arus Laut bisa digunakan sebagai sumber energi terbarukan. Pada studi ini menggunakan Turbin Sumbu Horizontal Hidrokinetik, turbin tersebut dipilih karena memiliki efisiensi cukup tinggi. Untuk metode yang dikembangkan yaitu pengaruh sudut pitch pada turbin. Hasil analisis tentang pengaruh sudut pitch terhadap performa turbin sumbu horizontal hidrokinetik dilakukan melalui simulasi numerik berbasis Computational Fluid Dynamics (CFD) dengan menggunakan variasi 3 sudut pitch yaitu 10°, 15°, dan 30° pada kecepatan 0.5 m/s, 0.75m/s, dan 1.2 m/s. Hasil simulasi menunjukkan bahwa sudut pitch yang menghasilkan performa terbaik adalah pada sudut 15° dengan nilai Cp sebesar 0.00413, sedangkan performa terendah terjadi pada sudut 30° dikarenakan turbin mengalami stall sehingga didapatkan nilai Cp sebesar 0.00031. Maka dari itu untuk turbin sumbu horizontal kurang di rekomendasikan pada kecepatan rendah karena memiliki nilai Cp yang rendah.
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In Indonesia, the potential of renewable energy is promising. According to the Asosiasi Energi Laut Indonesia (ASELI), the potential use of marine resources as electrical energy in Indonesia reached 727 000 MW. The average ocean current velocity in Indonesia is relatively low, generally having a speed of less than 1.5 m/s as in Palalawan and Indragiri Hilir, Riau Province, which has a flow rate ranging from 0.5 to 1.2 m / s. However, Sea Current Power Plant can be used as an energy source. In this study, Hydrokinetic Horizontal Axis Turbine was used due to its high efficiency. The method developed is the impact of the pitch angle on the turbine. The numerical simulation of HAT performance was carried out through Computational Fluid Dynamics (CFD) by varying the three-pitch angles, such as 10°, 15°, and 30° at speeds of 0.5 m/s, 0.75m/s, and 1.2 m/s. The simulation results show that the best performance is at an angle of 15° with a Cp value of 0.00413 while the lowest performance occurred at an angle of 30° because the turbine experiences stall so that a Cp value of 0.00031 obtained. Therefore, the horizontal axis turbine is not recommended at low speed because it has a low Cp value.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	HAT, sudut picth, NACA, CFD, pitch angle
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM740 Marine turbines
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	M. Akhsan Nafi' Bastomi
Date Deposited:	03 Sep 2021 07:32
Last Modified:	03 Sep 2021 07:32
URI:	http://repository.its.ac.id/id/eprint/91519

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