Bintari Citra Kurniawan
Energy System Engineering, Institut Teknologi Sumatera

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Experimental Study of The Fan Turbine Performance in Oscillating Water Column with Airflow System in Venturi Directional as Wave Energy Converter Madi Madi; Muhammad Gufran Nurendrawan Bangsa; Bintari Citra Kurniawan; Andi Andi; Fathan Hafiz; Putty Yunesti; Amelia Tri Widya; Asfarur Ridlwan; Daniel Epipanus
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 17 No. 1 (2023)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2023.819

Abstract

The Indonesian Ocean Energy Association has ratified the potential for ocean wave energy in Indonesia with a theoretical possibility of 141.472 x 109 watts. Unfortunately, this vast potential has not yet been utilized optimally in the Indonesian seas. Ocean wave energy technology has developed rapidly in various countries worldwide. The Oscillating Water Column (OWC), which uses the oscillating movement of ocean waves' airflow, is one of the most well-known systems for generating power from waves. A novel model of ocean wave power generation was created with the use of a more basic fan turbine and inspiration from OWC. It is directly integrated with an electric dynamo and an internal flow system in a venturi tube, which can increase airspeed based on continuity theory. The experiment's results succeeded in creating up and down movements of ocean waves with a high tide of 15 cm and a low tide of 12 cm. Ocean wave oscillations can produce gusts of air with a speed of 1.56 m/s. The final result is obtained by model performance with an average turbine rotation speed of 42.191 rpm, an average electric voltage of 0.809 volts, and a more optimal turbine efficiency of 67.9%.
Experimental Study of Integrated Fan Turbine in Oscillating Water Column with Valve System in Venturi Directional and Solar Energy as Hybrid Energy Converter Madi Madi; Muhammad Gufran Nurendrawan Bangsa; Bintari Citra Kurniawan
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 19 No. 1 (2025)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2025.10540

Abstract

Indonesia, with a maritime area of 7.081.000 km², has significant marine and energy potential. Its vast ocean can generate up to 1995 MW of energy, primarily from strong tidal movements, which can drive turbines to produce electricity. Indonesia's coastal topography supports tidal energy generation, and as a tropical country on the equator, it also has significant solar energy potential, with an average solar irradiation of 217 GWh/year. However, both energy sources are underutilized due to technological challenges, especially in remote areas. Current technologies like Oscillating Water Column (OWC) and Tidal Power Modifier (TPM) are not yet optimal for electricity generation. This experimental model is developed with a flow rectifier system in the venturi tube, which increases the fluid velocity based on continuity theory. Performance evaluation was conducted by recording electrical parameters like voltage and current generated by the turbine and solar PV. Test results showed that the hybrid turbine and solar PV system produced higher electricity output than the turbine without solar energy, with an average electric power of 2.24 x 10 3 watts, and a more optimal hybrid efficiency of 2233.33%.