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All Journal Eksergi: Jurnal Teknik Energi
F. Gatot Sumarno
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Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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RANCANG BANGUN TURBIN ANGIN ARCHIMEDES DENGAN DUA SUDU F. Gatot Sumarno; Supriyo Supriyo; Alfonsus Vito Kristian; Veriza Apriliani Noorendrassari; Muhammad Nurul Falah; Muhammad Luthfiandi Hilmawan
Eksergi Vol 16, No 2 (2020): MEI 2020
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.396 KB) | DOI: 10.32497/eksergi.v16i2.2206

Abstract

Tujuan penelitian ini adalah membuat model dari Rancang Bangun Turbin Angin Archimedes Dengan Dua Sudu dan mendapatkan karakteristik turbin dari uji kinerja dengan variasi kecepatan angin dan beban torsi. Untuk mengumpulkan data dan informasi awal menggunakan studi pustaka dan observasi. Langkah pengujian uji kinerjanya dengan cara mencari daya kinetik, daya mekanik, luasan terluar turbin, pemberian variasi kecepatan dan beban mekanik dengan cara direm secara berkala. Dari pengujian model turbin Archimedes diperoleh TSR terbesar sebesar 1,176, daya mekanik sebesar 9,992 W dengan Coeficient of Performance (Cp) sebesar 0,10 pada kecepatan angin 7 m/s untuk nilai terbesarnya. Dari data yang didapat digunakan untuk membuat grafik karakteristik turbin angin Archimedes dengan dua sudu
Challenges and Solutions in Hydropower: Analyzing Francis Turbine Performance and Operational Dynamics Mochamad Denny Surindra; Baktiyar Mei Hermawan; Suwarti; Slamet Priyoatmojo; F. Gatot Sumarno
Eksergi Vol. 21 No. 02 (2025): MAY 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v21i02.6592

Abstract

This paper addresses the global challenge of sustainable energy, exploring alternatives to dwindling fossil fuels and rising CO2. While renewables like solar and wind offer potential, they face geographical and intermittent limitations. Thermal and nuclear energies are discouraged due to severe environmental and health impacts. Hydropower emerges as a highly reliable and favored global solution, harnessing energy from flowing water, tides, and dams. It's the most prevalent renewable source for electricity, offering consistent, dependable, and emission-free supply. The Francis turbine is crucial to hydropower, known for its high efficiency. Its spiral casing, runner, and guide vanes efficiently convert water's energy into electricity. Water flows from a reservoir to the turbine, where guide vanes regulate entry to the runner, driving a generator. Our analysis reveals key factors affecting hydropower performance: energy source, guide vane opening, servomotor performance, and governor control system. Sediment accumulation at the inlet causes head loss, reducing optimal output. Misaligned guide vane openings can drop rotational speed, leading to suboptimal load. Servomotor issues like wear also require maintenance. A 5% speed drop setting effectively manages water pressure and flow, enabling smooth load escalation.
Co-Authors Alfonsus Vito Kristian BAKTIYAR MEI HERMAWAN Mochamad Denny Surindra Muhammad Luthfiandi Hilmawan Muhammad Nurul Falah Slamet Priyoatmojo supriyo supriyo SUWARTI Veriza Apriliani Noorendrassari