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All Journal Indonesian Journal of Innovation Studies
Widodo , Edi
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Computer Science & IT Education Engineering Law, Crime, Criminology & Criminal Justice

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Pressure Variation and Heat Transfer in Pokka 5001 Condenser: Perubahan Tekanan dan Perpindahan Panas pada Kondensor Pokka 5001 Fakhrizi, Rendy Rakhmad; Fahruddin, A’rasy; Mulyadi; Widodo , Edi
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.v26i4.2100

Abstract

General Background Condensers play a crucial role in thermal systems by converting steam into liquid through heat transfer processes. Specific Background The performance of condensers is influenced by key parameters such as pressure, temperature, and fluid flow rate, particularly in finned tube systems. Knowledge Gap Previous studies have examined general condenser performance, but limited research has focused on Pokka 5001 type condensers with louvered fins under varying pressure conditions. Aims This study aims to analyze the efficiency and heat transfer rate of a Pokka 5001 condenser using pressure variations as the primary variable. Results Experimental results show that increasing pressure from 20 to 40 Psi leads to higher efficiency values, ranging from 73.17% to 89.68%, and improves heat transfer rate and fluid work. Additionally, higher flow rates contribute to increased heat transfer performance. Novelty This study provides experimental evaluation of a Pokka 5001 finned tube condenser with controlled pressure variation and airflow conditions. Implications The findings support better operational control of pressure and flow rate to maintain optimal condenser performance in thermal systems. Keywords: Condenser Pressure, Heat Transfer, Efficiency Analysis, Finned Tube, Thermal System Key Findings Highlights Efficiency increases consistently with rising operating pressure Flow rate growth correlates with higher thermal transfer performance Experimental data identify optimal operating conditions
Waste Melting Stove Achieves 25 Kilogram Per Hour Capacity: Kompor Pelebur Sampah Mampu Memproses 25 Kilogram Per Jam Ferdiansyah, Faris; Mulyadi; Widodo , Edi; 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.v26i4.2129

Abstract

General Background: Organic waste accumulation presents significant environmental challenges, including methane emissions and pollution. Specific Background: Conventional waste treatment methods often require high energy consumption and incur substantial operational costs. Knowledge Gap: There is limited development of low-cost waste melting systems utilizing alternative fuels such as used oil combined with water to support combustion. Aims: This study aims to design, manufacture, and evaluate the performance of an organic waste melting stove using a mixture of used oil and water. Results: The manufacturing process involves design, material selection, fabrication, assembly, and testing, with a total production time of approximately 635 minutes. The total production cost is calculated at Rp 2,719,100, and the selling price is determined at Rp 3,534,830 with a 30% profit margin. Performance testing shows that a 4 mm nozzle achieves a combustion capacity of 25 kg/hour, while an 8 mm nozzle produces 7 kg/hour. Novelty: The study introduces a waste melting stove integrating alternative fuel from used oil and water with detailed manufacturing cost and performance evaluation. Implications: The system provides a practical and economical solution for organic waste processing and supports sustainable waste management practices. Keywords: Waste Melting Stove, Used Oil Fuel, Combustion Capacity, Manufacturing Cost, Waste Management Key Findings Highlights Fabrication completed within 635 minutes using structured stages Smaller nozzle configuration produced higher burning throughput Economic calculation defined marketable price with profit margin
Co-Authors Fahruddin , A`rasy Fahruddin, A’rasy Fakhrizi, Rendy Rakhmad Ferdiansyah, Faris MULYADI