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All Journal Jurnal MEKANIKAL Turbo : Jurnal Program Studi Teknik Mesin JURNAL PENGABDI Majalah Teknik Simes TEKNOSIA Trends in Mechanical Engineering Research Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Zuliantoni, Zuliantoni
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Bengkulu, Bengkulu, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation

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ANALISIS TEKANAN HIDROLIK TERHADAP OIL LOSSES PADA MESIN PRESS KAPASITAS 15 TON Tarigan, Daniel Elieser; Zuliantoni; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.38827

Abstract

In palm oil processing, there are five main stages: sterilization, threshing, digestion, pressing, and clarification. Among these, the pressing stage is one of the most critical. The pressing machine is used to separate crude oil from the fibers in the fruit pulp. This machine includes a pressing component, commonly referred to as the cone cage, which is operated by a hydraulic mechanism. The palm oil pressing process plays a crucial role in determining the success of processing fresh fruit bunches (FFB), as significant oil losses often occur during this stage. One of the key factors affecting these losses is the value of the hydraulic pressure. This study aims to investigate the effect of hydraulic pressure on oil losses in fibers for each pressing machine and to understand how the pressing machine operates. To analyze the hydraulic pressure variable and oil losses in fibers, observations were conducted by monitoring the pressure gauge on each pressing machine. The oil losses in fibers were measured through laboratory testing at the factory. The collected data were then compared. The results of this study indicate that hydraulic pressure has a significant effect on oil losses in the fibers of the pressing machine. At a hydraulic pressure of 49 bar, the smallest oil loss was recorded at 3.28%, whereas at a hydraulic pressure of 40 bar, the highest oil loss was observed at 4.42%. This demonstrates that higher hydraulic pressure results in lower oil losses, and vice versa.
ANALISA DISTRIBUSI TEMPERATUR INTERMEDIATE TANK FASSIP-07 MENGGUNAKAN METODE COMPUTATIONALFLUID DYNAMICS (CFD) Prasetio, Dimas; Zuliantoni; Juarsa, Mulya; Ismarwanti, Sri; Kharisma, Sunandi
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.39825

Abstract

This study aims to understand the temperature distribution in the natural circulation system in the Intermediate Tank FASSIP-07 using the Computational Fluid Dynamics (CFD) method. Simulations were performed using Ansys Workbench R1 2024 software, with inlet temperature variations of 70°C, 80°C, and 90°C. The results showed that the highest temperature distribution was found at the inlet with a temperature of 90°C, while the outlet reached the lowest temperature at 70°C. This conclusion was obtained from the analysis of fluid flow driven by the buoyancy phenomenon due to differences in density. This study shows the potential for using a passive cooling system for nuclear reactors to improve safety in emergency conditions.
EFFECT OF PLATE THICKNESS AND ROLL GAP ON THE GEOMETRIC QUALITY OF ROLLING PRODUCTS Hendra, Hendra; Fauzan, Ahmad; Zuliantoni, Zuliantoni; Aswata, Aswata; Nugraha, Kurnia; Hermiyetti, Hermiyetti; Hernadewita, Hernadewita
Trends in Mechanical Engineering Research Vol 1, No 1 (2023): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i1.20496

Abstract

The folding gate is a middle frame flanked by cross bars on the back of the shop door which has a higher level of strength than the body of the door and has better security. The U folding profile is made by a plastic deformation rolling process in which the plate is passed between the pressing roll and the sliding roll. Flat plates are used from the base material of metal plates with varying plate thickness where the metal forming process uses a cold working process. Factors that affect the results of rolling are roll dimensions, machine capacity, roll pressure lever settings and others. The thickness of the plate that can be rolled by the machine, the amount of force exerted on the roll gap, the evenness of the roll surface both vertically and horizontally and the alignment of the roll gap. The thicker the material with a large pressure spacing can affect the forming process so that it enlarges the largest angular deviation of 0.761 mm at a pressure spacing of 0.0 mm. A thicker material with a large pitch can enlarge the wing opening so that both wings bend imperfectly making the height deviation increase by 18.58 mm at a pitch of 0.0 mm. Thinner material with a large press distance at the start of the roll affects the flange width so that the rolling force exerted on the contact gap between the roll and the workpiece side is unbalanced. Get the largest size b- (8.030 mm) 0.0 mm pressure distance and b+ (7.843) 0.15 mm pressure distance. 
Co-Authors Agus Suandi, Agus Alqa, A Sofwan F Alqap, A. Sofwan F Antonius F A Silaen Aritonang, Jefri Fanto Aswata, Aswata Bismantolo, Putra Dedi Suryadi F. Alqap, A. Sofwan Fauzan, Ahmad Febriyanto, Dwi Gunawan, Agustin Hardiyanto, Martin Hendra, Hendra Hendri Hestiawan Hendri van Hoten Hermiyetti Hernadewita, Hernadewita Kharisma, Sunandi Muhammad Farid Mulya Juarsa Nanda, Andany Rizka Nugraha, Kurnia Nurbaiti Nurbaiti Panjaitan, Felix Budianto Prasetio, Dimas Roby Syaputra Saragih, Fernando Desfriandi Sri Ismarwanti, Sri Tarigan, Daniel Elieser Warsianto, Ardi Yovan Witanto