-, Madi (2017) Uji Coba Laboratorium Pengaruh Desain Lengan Pada Kinerja Pembangkit Listrik Tenaga Gelombang Laut Tipe Flap - Float Horizontal: Gelombang Reguler. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gelombang laut merupakan salah satu sumber energi baru dan terbarukan di wilayah perairan. Secara umum, terdapat dua prinsip kerja pembangkit listrik tenaga gelombang laut (PLTGL) yaitu, Oscillating Water Column (OWC) dan Bottom Fixed Oscillating Flap (BFOP). Kedua prinsip tersebut mempunyai kelemahan dan kelebihan masing – masing yaitu, pada OWC kelemahannya lebih banyak mereduksi gelombang laut dan kelebihannya pada proses instalasi sangat mudah, sedangkan kelemahan BFOP proses instalasi sangat sulit dan kelebihannya tidak mereduksi gelombang laut. Sehingga, dibutuhkan prinsip PLTGL yang tidak dapat mereduksi gelombang laut dan dapat diinstal dengan mudah. Prinsip tersebut yang ditawarkan penulis dalam penelitian tugas akhir ini yaitu, prinsip PLTGL tipe Flap – Float Horizontal (FFH). Adapun tujuan dari penelitian ini yaitu, mengidentifikasi desain lengan, mengetahui pengaruh besar sudut β terhadap torsi dan tegangan listrik, serta mengetahui pengaruh sensitivitas desain lengan terhadap kondisi lingkungan. PLTGL FFH meninjau dari Wave Star Energy yang telah dikomersialkan di Denmark yang mempunyai bentuk dasar pelampung setengah bola, dengan diameter 5 meter dan panjang lengan 10 meter, hanya saja pada Wave Star Energy menggunakan piston untuk pembangkit listrik, sedangkan pada PLTGL FFH menggunakan gear dan dinamo untuk pembangkit listik. Pada penelitian ini, penulis menggunakan metode pemodelan fisik yang dilakukan di Laboratorium Energi dan Lingkungan Laut, Departemen Teknik Kelautan FTK ITS. Percobaan dilakukan menggunakan skala 1:20, dengan variasi desain lengan yaitu, posisi lengan di atas atau di bawah permukaan air, variasi panjang lengan yaitu, 0,4 m, 0,5 m dan 0,6 m serta variasi H/gT2. Adapun langkah – langkah dalam penelitian ini yaitu, mencari sumber referensi dan survei lokasi penelitian, mengumpulkan peralatan dan bahan, proses pembuatan model fisik, kalibrasi alat di laboratorium, proses pengukuran, pengujian, perekaman data dan pengolahan data sampai ke tahap analisis data dan kesimpulan hasil. Hasil akhir penelitian ini, didapatkan pengaruh besar sudut β sebanding dengan torsi dan tegangan listrik dan pengaruh besar H/gT2 yang cenderung sebanding dengan torsi dan tegangan listrik yang dihasilkan.
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Sea waves are one of the new and renewable energy sources in the territorial waters. In general, there are two working principles of ocean wave power plant (PLTGL), Oscillating Water Column (OWC) and Bottom Fixed Oscillating Flap (BFOP). Both of these principles have their weaknesses and advantages, OWC weaknesses are more likely to reduce sea waves and its advantages is in the installation process which is very easy, while the weakness of BFOP is the installation process is very difficult and the advantages is it does not reduce sea waves. Thus, it takes the PLTGL principle that does not reduce sea waves and can be installed easily. The principle offered by the author in this final project is the principle of PLTGL Flap-Float Horizontal (FFH). The purpose of this research is to identify the arm design, to know the influence of the angle of β to the torque and the electric voltage, and to know the effect of sensitivity of the arm design to the circumstances. PLTGL FFH reviews from a commercialized in Denmark named Wave Star Energy that has a base shape of a half-ball buoy, with a diameter of 5 meters and a length of 10 meters, but Star Energy Wave uses a piston for a power plant, whereas in PLTGL FFH uses a gear and a dynamo For power plant. In this study, the authors use physical modeling methods conducted in the Laboratory of Energy and Ocean Environment, Department of Ocean Engineering FTK ITS. The experiments were performed using a 1:20 scale, with variations of arm design: arm position above or below water level; arm length variation: 0.4 m, 0.5 m and 0.6 m and variation of H/gT2. The steps in this research that is, looking for source of reference and survey of research location, collecting equipments and materials, process of making physical model, calibrating tools in laboratory, measurement process, testing, data recording and data processing up to stage of data analysis and result conclusion. The final result of this research, the effect of the β angle is proportional to the torque and the electric voltage and the effect of H/gT2 which tends to be proportional to the torque and the voltage generated.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Gelombang Reguler, PLTGL, Torsi, Tegangan Listrik, Regular Waves, Torque, Electrical Voltage |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | - Madi Madi |
| Date Deposited: | 16 Oct 2017 04:23 |
| Last Modified: | 08 Mar 2019 04:02 |
| URI: | http://repository.its.ac.id/id/eprint/45220 |
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