Studi Eksperimen Dan Numerik Wave Energy Converter (Wec) Tipe Heaving Device Dengan Variasi Diameter Floater

Budihantono, Febri (2023) Studi Eksperimen Dan Numerik Wave Energy Converter (Wec) Tipe Heaving Device Dengan Variasi Diameter Floater. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kenaikkan populasi penduduk Indonesia setiap tahunnya berdampak langsung dengan peningkatan kebutuhan listrik nasional. Diproyeksikan pada tahun 2030 kebutuhan listrik akan meningkat sebesar 300 kWh/kapita dari kebutuhan listrik nasional tahun 2021. Kenaikkan kebutuhan listrik akan berdampak dengan kenaikkan emisi karbon di Indonesia karena penyumbang emisi karbon terbesar di Indonesia disebabkan oleh pembangkit listrik. Dengan upaya pengurangan masalah kebutuhan listrik dan emisi karbon dilakukan penelitian mengenai Wave Energy Converter (WEC) tipe heaving device karena gelombang laut di Indonesia berpotensi untuk dimanfaatkan menjadi sumber energi terbaharukan. Penelitian mengenai WEC tipe heaving device dilakukan dengan menggunakan metode eksperimen yang dilakukan pengujian di Laboratorium Hidrodinamika FTK ITS dan metode numerik yang menggunakan Boundary Element Method (BEM). Model dengan referensi powerbuoy digunakan pada eksperimen ini dengan skala 1:10, dengan variasi pada diameter pada floaternya. Penelitian ini difokuskan untuk mencari nilai performa Respone Amplitude Operator (RAO), excitation force magnitude, dan mechanical power dari model tersebut. Hasil dari penelitian ini didapatkan bahwa pada metode eksperimen dan numerik nilai RAO mengalami kenaikkan sebesar 5% dari setiap variasinya. Sedangkan pada excitation force magnitude mengalami kenaikkan 3% dari setiap variasi dan mechanical power juga mengalami kenaikkan sebesar 7% dari setiap variasinya. Mechanical power terbesar yang dihasilkan model ini sebesar 1.656 W/m².
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The increase in Indonesia's population every year has a direct impact on increasing national electricity demand. It is projected that in 2030 electricity demand will increase by 300 kWh / capita from national electricity demand in 2021. The increase in electricity demand will have an impact on the increase in carbon emissions in Indonesia because the largest contributor to carbon emissions in Indonesia is caused by power plants. With efforts to reduce the problem of electricity demand and carbon emissions, research was carried out on the Wave Energy Converter (WEC) type of heaving device because sea waves in Indonesia have the potential to be used as a renewable energy source. Research on WEC type heaving device was carried out using experimental methods tested at the Hydrodynamics Laboratory of FTK ITS and numerical methods using the Boundary Element Method (BEM). A model with a powerbuoy reference was used in this experiment with a scale of 1:10, with variations in the diameter of the floater. This study focused on finding the performance value of Respone Amplitude Operator (RAO), excitation force magnitude, and mechanical power from the model. The results of this study found that in experimental and numerical methods the RAO value increased by 5% from each variation. While the excitation force magnitude increases by 3% from each variation and mechanical power also increases by 7% from each variation. The largest mechanical power produced by this model is 1,656 W/m².

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Diameter floater, Heaving device, Point Absorber, Renewable ocean energy, Wave Energy Converter.
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power.
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Budihantono Febri
Date Deposited:	24 Jul 2023 03:30
Last Modified:	24 Jul 2023 03:30
URI:	http://repository.its.ac.id/id/eprint/99081

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