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All Journal Jurnal Edukasi Elektro Journal of Applied Materials and Technology Journal of Electrical Engineering
Wijaya, Ali Satria
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Computational Fluid Dynamics Modeling of Fermentation Reactions in Bioethanol Fermentor: A Review Wijaya, Ali Satria; Novia, Novia; Hadiah, Fitri
Journal of Applied Materials and Technology Vol. 4 No. 2 (2023): March 2023
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.4.2.79-89

Abstract

Bioethanol is a renewable energy source that can replace fossil fuels. The advantages in terms of economy and its impact on the environment make bioethanol was chosen as a biofuel. Bioethanol can be produced from various types of biomasses with the help of microorganisms, namely yeast, for the fermentation process. In manufacturing, factors including temperature, concentration, pH, fermentation time, and stirring speed influence the fermentation process. Computational Fluid dynamics (CFD) package can be applied to observe the procedures in a fermenter. CFD simulates fluid movement, energy transport, chemical reactions, and other phenomena with the aim of clarifying their impact on the overall effectiveness of bioethanol production. In this journal, a review of the fermentation process with CFD modeling was made to look at the parameters and phenomena during the bioethanol production process. The analysis commences with an examination of the processes involved in bioethanol production and underscores the crucial role of fermentation in transforming renewable resources into bioethanol. Subsequently, it delves into the foundational principles of CFD and how they are incorporated into the modeling of bioethanol fermenters. Furthermore, the review highlights key advancements and innovations in CFD modeling techniques, such as multiphase models, turbulence modeling, and coupled simulations, aiming to capture the intricate interplay of physical and biological phenomena within fermentors. Insights into the impact of operating conditions, reactor design, and microbial behavior on bioethanol yield and quality are discussed, providing a comprehensive understanding of the complex system dynamics.
Rancang Bangun Prototype Pembangkit Listrik Alternatif Termoelektrik Generator (TEG) Akbar, Muhammad; Al Faruqi, Fiqri; Manab, Abdul; Satria Wijaya, Ali
Journal of Electrical Engineering Vol. 2 No. 4 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jte.v2i4.5506

Abstract

Penelitian ini bertujuan untuk merancang dan membangun prototipe pembangkit listrik alternatif thermoelectric generator (TEG) sebagai media pembelajaran energi terbarukan yang efisien. Metode penelitian yang digunakan adalah ADDIE yang meliputi tahapan Analysis, Design, Development, Implementation, dan Evaluation. Komponen utama prototipe terdiri dari tungku briket batok kelapa sebagai sumber panas, empat buah modul Peltier SP 1848-27145 SA yang disusun seri, sistem pendingin air, serta boost converter XL6009 untuk menstabilkan tegangan keluaran. Hasil pengujian menunjukkan bahwa performa terbaik dicapai saat menggunakan sistem pendingin air radiator, dengan suhu sisi panas mencapai 150,5°C dan sisi dingin 34,9°C. Kondisi ini menghasilkan beda temperatur (ΔT) sebesar 115,6°C yang mampu membangkitkan tegangan hingga 3,44 Volt sebelum masuk ke boost converter. Melalui penggunaan boost converter, tegangan berhasil ditingkatkan menjadi 12,89 Volt untuk menyuplai beban lampu DC 10 Watt. Arus puncak yang dihasilkan tercatat sebesar 0,588 Ampere dengan daya listrik maksimum mencapai 7,58 Watt. Penelitian ini membuktikan bahwa prototipe mampu mengonversi energi panas menjadi listrik secara efektif untuk aplikasi skala kecil dan layak digunakan sebagai sarana edukasi teknologi energi baru terbarukan.
Prototype of Wind Power Plant Using a Laboratory-Scale Vertical Axis Savonius Turbine Wijaya, Ali Satria; Faruqi , Fiqri Al; Zhafarina , Imas Ning; Utami, Pertiwi Nurul; Wirasapta, Andicho Haryus
Jurnal Edukasi Elektro Vol. 10 No. 1 (2026): Jurnal Edukasi Elektro Volume 10, No. 1, May 2026
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v10i1.96718

Abstract

This study investigates the performance of a laboratory-scale vertical-axis Savonius wind turbine prototype developed based on a simple and robust mechanical design for small-scale renewable energy applications. The prototype frame was constructed using angle steel with a cross-section of 40 × 40 mm and a thickness of 1.8 mm, forming a rectangular structure with overall dimensions of 150 cm × 150 cm and a height of 50 cm. The Savonius rotor employed a solid steel shaft with a diameter of 2.5 cm and acrylic blades measuring 100 cm in height and 40 cm in width. Performance data were collected over a six-month observation period from August 2025 to January 2026 under low to moderate wind speed conditions. The measured wind speed ranged from approximately 3.5 to 6.5 m/s, resulting in power outputs between 0.77 W and 9.44 W. The calculated power coefficient (Cp) varied from 0.18 to 0.34, indicating a typical efficiency range for drag-based Savonius turbines. The results show a consistent increase in rotor speed and electrical power output with rising wind speed, while Cp values tend to stabilize at higher wind velocities, reflecting aerodynamic performance limitations inherent to Savonius turbines. These findings demonstrate that the developed prototype exhibits stable and predictable behavior, making it suitable for laboratory experimentation, educational purposes, and preliminary assessment of small-scale wind energy systems operating in low wind speed environments.
Co-Authors Abdul Manab Al Faruqi, Fiqri Faruqi , Fiqri Al Fitri Hadiah Muhammad Akbar Novia Novia Utami, Pertiwi Nurul Wirasapta , Andicho Haryus Zhafarina , Imas Ning