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All Journal Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science)
Maydana, Adinda
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Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Law, Crime, Criminology & Criminal Justice

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Boosting Boiler Efficiency Through Strategic Interventions: Meningkatkan Efisiensi Boiler Melalui Intervensi Strategis Maydana, Adinda; Akbar, Ali
Procedia of Engineering and Life Science Vol. 5 (2024): Proceedings of the 7th Seminar Nasional Sains 2024
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v7i0.1538

Abstract

This study investigates the decline in steam boiler performance, focusing on identifying causal factors and implementing corrective actions. Employing an observational approach, the research highlights insufficient water supply and suboptimal fuel quality as primary contributors to decreased efficiency. Strategic measures, including optimizing air supply in the combustion process and enhancing corrosion control within the boiler's fire tubes, were implemented to address these issues. The findings suggest that these interventions effectively restore boiler performance, offering significant implications for maintenance practices and operational efficiency in industrial settings. Highlights: Steam Boiler Functionality: A steam boiler produces steam through fuel combustion and water conversion. Identifying Performance Factors: Lack of water filling and fuel quality are identified as factors causing boiler performance decline. Action Plan: Optimization of air in combustion and corrosion control in boiler pipes are implemented to address the performance issue. Keywords: Boiler, Corrosion, Performance
Combined Aerodynamic Modifications Reduce Drag in MPV Vehicles: Modifikasi Aerodinamis Terpadu Mengurangi Hambatan Udara pada Kendaraan MPV Maydana, Adinda; Fahruddin, A'rasy
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2133

Abstract

General Background: Aerodynamic characteristics play an important role in vehicle performance because air resistance directly affects fuel consumption and maximum speed. Specific Background: Winglet bumpers and rear spoilers are commonly applied aerodynamic devices intended to regulate airflow around vehicles and reduce drag. Knowledge Gap: Although aerodynamic devices have been widely studied, limited experimental evidence directly compares the combined application of bumper winglets and rear spoilers on MPV-type vehicles under controlled wind tunnel conditions. Aims: This study aims to analyze the effect of bumper winglets, rear spoilers, and their combination on air drag acting on an MPV model. Results: Experimental testing was conducted in a wind tunnel using wind speed variations of 7 m/s, 8.5 m/s, and 10 m/s under four configurations: without modification, winglet bumper, rear spoiler, and combined modification. The results show that all aerodynamic modifications reduced drag force and drag coefficient compared with the unmodified model. The combined configuration produced the best result, achieving the largest drag coefficient reduction of 38% at 8.5 m/s. Novelty: This study directly compares individual and combined aerodynamic modifications on an MPV prototype using controlled wind tunnel testing. Implications: The findings indicate that the combined use of bumper winglets and rear spoilers offers a practical aerodynamic strategy for reducing drag and improving high-speed vehicle efficiency. Keywords: Aerodynamics, Drag Coefficient, Winglet Bumper, Rear Spoiler, Wind Tunnel Key Findings Highlights The combined configuration generated the lowest measured air resistance. The largest reduction was recorded at 8.5 m/s. Airflow became more stable with smaller wake formation behind the vehicle.
Co-Authors Ali Akbar Fahruddin, A'rasy