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Journal Mechanical Engineering
Published by Politeknik Negeri Ambon
ISSN : -     EISSN : 29884977     DOI : https://doi.org/10.31959
Core Subject : Engineering,
Industrial & Manufacturing Engineering Mechanical Engineering
Manufaktur, Perawatan, Otomotif, Teknik Produksi Migas dan Teknologi Rekayasa Sistem Mekanikal Migas
Arjuna Subject : Teknik (semua kategori) - Mekanik Material
Articles 134 Documents
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Studi Eksperimen Variasi Temperatur Masuk Air Pendingin Terhadap Kinerja Prototype Shell And Tube Aliran Berlawanan Arah Azmain Noor Hatuwe; Jeffrie J Malakauseya; Dwi Rendi Saputra Latuconsina
Journal Mechanical Engineering Vol. 4 No. 1 (2026): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v4i1.3964

Abstract

Advancements in technology and heat transfer systems necessitate heat exchangers that meet industrial requirements. Heat exchangers play a crucial role in heat transfer; the counter-flow type, in particular, is widely used due to its superior heat transfer capabilities. This study investigates the effect of varying the inlet temperature of the cold fluid on heat exchanger performance. The cold fluid inlet temperature (Tc,in ) was varied specifically at 20.9°C, 23.3°C, 25.1°C, 28.2°C, 30.4°C, and 32.2°C as the independent variable, while total energy and the overall heat transfer coefficient served as the dependent variables. The results indicate that increasing the initial temperature of the cooling water entering the exchanger leads to a rise in the cooling water temperature and a decrease in the outlet temperature of the hot fluid; notably, the overall heat transfer coefficient (U) increased from 672.71 W/m²°C to 852.74 W/m²°C. Regarding total heat transfer energy, the total energy released was 9,414 J/s during the first test (initial temperature of 20.9°C) and 8,451.68 J/s during the fifth test (initial temperature of 30.4°C), representing a decrease of 962.68 J/s in released energy. Both the exchanger effectiveness and the NTU value tended to increase; the first test yielded effectiveness and NTU values ​​of 0.46 and 2.25, respectively, while the final test resulted in values ​​of 0.54 and 2.85. The increase in NTU was driven by the rise in the overall heat transfer coefficient (U), while the increase in effectiveness was influenced by the rise in the NTU value. Keywords: Heat Exchanger, Flow Rate, Heat Transfer
Analisis Kuantitatif Pengaruh Getaran Mesin Terhadap Umur Fatik Struktur Rangka Dump Truck Kapasitas Besar Pada Kondisi Pembebanan Dinamis Frederik Demmatacco; Nevada Nanulaitta; Graciadiana I Huka
Journal Mechanical Engineering Vol. 4 No. 1 (2026): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v4i1.4019

Abstract

Large-capacity dump truck operations in mining environments generate cyclic dynamic loads originating from engine vibration, uneven haul road surfaces, and inertial forces from acceleration and braking, which potentially trigger fatigue damage accumulation in the vehicle chassis frame structure. This study aims to characterize the engine vibration spectral profile, map the dynamic stress distribution at critical frame zones, and quantitatively assess the contribution of engine vibration to fatigue life prediction in an integrated manner. The methodology integrates three primary approaches, namely in-situ vibration measurement based on Power Spectral Density analysis, frequency-domain Finite Element Analysis simulation, and fatigue life prediction utilizing rainflow counting combined with Miner's Rule. Measurement results reveal a peak Power Spectral Density value of 0.0842 g²/Hz under full-load conditions at 2,100 RPM. Numerical simulation confirms a maximum von Mises stress of 487 MPa at the front cross member welded joint, exceeding the material fatigue limit of 310 MPa. Fatigue life prediction at the most critical point reaches approximately 11,494 operational hours, with engine vibration contributing 38.6% of the total accumulated damage. These findings establish engine vibration as the second largest determinant of chassis structural degradation, making engine mounting system optimization and remaining fatigue life-based predictive maintenance the primary recommendations of this research. Keywords: engine vibration; fatigue life; finite element analysis; Miner's Rule; mining dump truck
Lost Circulation Material Berbahan Dasar Rumput Laut (Eucheuma Cottonii ) Sebagai Aditif Dalam Lumpur Pemboran Berbahan Dasar Air Tawar Nurul Anniza; Purnomosidi; Valentyn B Hattu; Deny I Pellu
Journal Mechanical Engineering Vol. 4 No. 1 (2026): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v4i1.4020

Abstract

This study aims to analyze the effect of adding Eucheuma cottonii seaweed powder as a Lost Circulation Material (LCM) on the characteristics of freshwater-based drilling mud. The variations of seaweed powder concentration used were 0.25 grams, 0.5 grams, 0.75 grams, 1 grams, 1.25 grams 1.5 grams, and 1.75 grams. The parameters analyzed included density, rheological properties (plastic viscosity, yield point, and gel strength), pH, filtration loss, and mud cake characteristics. The results indicate that the addition of Eucheuma cottonii seaweed powder affects the physical, rheological, and chemical properties of the drilling mud. Increasing seaweed concentration tends to increase plastic viscosity, yield point, and gel strength, while density decreases but remains within the API standard limits at certain concentrations. The mud pH remains relatively stable in the range of 8-10. Based on overall performance, the 0.75 g composition provides the most optimal results because it produces the best balance between rheological properties and mud stability compared to other variations. However, the filtration loss obtained at this composition still does not fully meet the API standard. Therefore, Eucheuma cottonii seaweed has potential as a natural LCM, but further development is required to reduce fluid loss in accordance with standard control requirements.  Keywords: Eucheuma cottonii, drilling mud, lost circulation material, Rheology.
Studi Eksperimental Pengaruh Jumlah Katup Buang Terhadap Kinerja Pompa Hidram Djaman; Berthy Pelasula; Victor D Waas; Ari Permana L
Journal Mechanical Engineering Vol. 4 No. 1 (2026): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v4i1.4030

Abstract

A hydraulic ram pump is a water pumping device that utilizes the potential energy of flowing water through the water hammer phenomenon without requiring external energy sources such as electricity or fuel. This technology has considerable potential as a sustainable and cost-effective solution for water supply in rural and remote areas with limited access to electrical power. The performance of a hydraulic ram pump is influenced by several design and operating parameters, one of which is the configuration of the waste valve. However, studies investigating the effect of the number of waste valves on hydraulic ram pump performance remain limited. Therefore, this study aimed to investigate the effect of varying the number of waste valves on the water discharge and efficiency of a hydraulic ram pump. An experimental method was employed using three waste valve configurations, namely one, two, and three waste valves. The observed parameters included waste valve discharge, delivery discharge, total inlet discharge, and pump efficiency, which was calculated using the D'Aubuisson efficiency method. The results indicated that increasing the number of waste valves enhanced the hydraulic ram pump discharge. The average waste valve discharge increased from 17.75 L/s to 29.43 L/s and 46.27 L/s, while the average delivery discharge increased from 1.05 L/s to 2.10 L/s and 3.10 L/s. Similarly, the total inlet discharge increased from 18.80 L/s to 31.53 L/s and 49.37 L/s. The calculated efficiencies were 69.81% for the single waste valve configuration, 83.26% for the two-waste-valve configuration, and 78.49% for the three-waste-valve configuration. The decrease in efficiency observed with three waste valves indicates that increasing the number of waste valves does not necessarily improve pump performance due to higher energy losses during the water hammer generation process. Therefore, under the experimental conditions of this study, the two-waste-valve configuration provided the optimum performance by achieving the highest efficiency while maintaining a relatively high delivery discharge. Keywords: hydraulic ram pump, waste valve, number of waste valves, water discharge, D'Aubuisson efficiency, water hammer.
Perancangan Simulasi Sistem Pergerakan Menggunakan Metode Register Shiff Pada Pengontrolan Pneumatik Untuk Mesin Pengupas Kelapa Otomatis Jeffrie J Malakauseya; Josef Matheus
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1982

Abstract

In the field of industry, one of the most important things in a company is the means of production because one of the production processes will not function and it is impossible for the company's goals to be achieved. Production-based industries definitely need tools and machines to support the production process, one of which is a coconut peeler using a pneumatic system. The problem that occurs is how to analyze the movement of air moving on each pneumatic valve to the cylinder that will move the pressure lever. The performance of a pneumatic-based coconut peeler as a medium for testing the simulation was carried out using the register shift method and simulated in the Pneumatic FluidSim Software. The test was carried out directly on the training board in the pneumatic-hydraulic laboratory. The results show that the air flow acts on each pneumatic valve to move the double acting cylinder which functions as a sander block drive. The next step is to determine the type of cylinder with the diameter size used so that it can move the sanding block to move linearly (back and forth). For this reason, it is necessary to calculate the forces (F) acting on the sanding block and how much air pressure (P) is needed Keywords : Software simulasi, FluidSim-Pneumatik, cylinder
Evaluasi Dan Optimasi Pompa Electrical Submersible Pump Di Sumur JVT-20 Pada Lapangan X Josep V Talahaturuson; Purnomosidi Purnomosidi; Berthy Pelasula Pelasula
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1983

Abstract

Electrical Submersible Pump (ESP) is a multilevel pump that is inserted into the well, by being immersed in the fluid and driven by an electric motor to lift the fluid from the well to the surface. The ESP currently used in the JVT-20 well is REDA A400 type ESP with 18 - 50 Stage, 60 Hz with a pump capacity of 200 - 500 BFPD. The JVT-20 well experienced a decrease in production rate so that only 150 BFPD was produced with a 75% water cut. The JVT-20 well's inflow performance relationship curve has a maximum flow rate of 214,286 BFPD, therefore optimization efforts are being made so that the daily production capacity of the JVT-20 well approaches the maximum flow rate of the well. The optimization was carried out by replacing the installed pump with a new pump type, namely ODI W2, with 110 stages, pump size 4.3 HP 60 Hz, with a production flow rate of 171.27 BFPD approaching the targeted flow rate for the JVT-20 well and pump efficiency of 45%. Keywords: Optimization, Electrical submersible Pump, Evaluation, Well, JVT-20  
Optimasi Produksi Dengan Menggunakan Sucker Rod Pump (SRP) Pada Sumur “Z” Di Lapangan Kalrez Petroleum Seram Ltd Sherlina Akihary; Henk Subekti; Alexander A Patty
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1984

Abstract

In the oil and gas production process, operating production wells are mainly based on good production capacity to achieve the best production. However, over time, well production causes the pressure in the well reservoir to drop to such an extent that the well no longer has the ability to flow fluid naturally from the reservoir to the surface. Research by Karlez Petrolum (Seram) Ltd. Karlez himself uses an artificial lift (sucker rod pumps), SRP is one of the artificial lift techniques used to help lift oil from the well to the surface. It is necessary to optimize the production of more optimal wells for the pump installed in the “Z” Well in the Karlez Petroleum (Seram) Ltd. field. To obtain the desired profit, the costs incurred must be less than the income earned. This can be seen from economic indicators.  Keywords: Sucker Rod Pump, Optimization, artificial lift, economic indicators.
Studi Laboratorium Efek Pencampuran Rumput Laut Dan Polimer Xanthan Gum Terhadap Adsorpsi Valentyn Paul Bodywein Hattu; Deny Ismail Pellu
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1985

Abstract

Polymer injection is an EOR method that uses a polymer solution to increase oil recovery by decreasing the oil-water mobility ratio, by increasing the viscosity of the injection water. The purpose of this study was to analyze the effect of adding seaweed to xanthan gum polymer at various concentrations. The effect that is analyzed in this study is the adsorption of the solution. From the research that has been done, it can be concluded that, based on the adsorption test, xanthan gum polymer is the best. Keywords: Polymer Injection, EOR, Adsorption
Evaluasi Artificial Lift Esp Menggunakan Metodanalisinodal Untuk Meningkatkan Laju Sumur X Pada Lapangan Y Ceroline Bakarbessy; Agus Wahyudi; Alexander A. Patty
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1986

Abstract

Petroleum is an important component in the community’s everyday life. It is needed both by the community and the industry, therefore the oil production activity are carried out in the field. Oil production in the field has always been closely tied to the decrease in reservoir pressure, causing several issues such as production rate reduction, pump setting depth decrease and reservoir decrease, therefore an artificial lift must be installed so the fluid can be produced.The equipment installed as an artificial lift, that is maintained so that the well can produce optimally, will experience “well problems” on the reservoir production, such as watercut, scaling, and other problems. If the k in a well has a high watercut but has heavy oil characteristics, it is necessary to increase oil production handled with ESP artificial lift in order to optimize the oil production. Keywords : electrical submersible pump, nodal analysis, artificial lift evaluation
Evaluasi Resiko Kerja Pada Operasi Well Service Pada Sumur X Di Lapangan Kalrez Petroleum (Seram) Ltd Ona Latumainase; Purnomosidi Purnomosidi; Erwin B. Pattikayhatu
Journal Mechanical Engineering Vol. 1 No. 2 (2023): Journal Mechanical Engineering
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1987

Abstract

During the process of producing fluid from a well, there is often a decrease in productivity which is caused by several things so that production often does not meet the specified targets. Therefore, Work Over Well Service (WOWS) is carried out to launch and maintain oil production in wells. In this WOWS activity, of course there are many potential hazards. Therefore, it is important to pay attention to work safety and all aspects of K3 starting from from work safety at height, work safety in flammable or explosive areas, electrical work safety, to well rework. In the data processing process, calculations are made of the processing time at the workover and well services activity program stages as well as the potential hazards that occur. This calculation refers to the standard processing time that has been set by the company's workover and well service. The aim is to obtain data. By utilizing field observation data, it is hoped to obtain actual information regarding workover and well service operating conditions and find possible anomalies. This is important to identify problems and find alternative solutions to well problems. From the results of research on work risk evaluation in well service operations carried out at Kalrez Petroleum (Seram) LTD, to find out priority risks, you must carry out calculations on the risk matrix by multiplying the probability and consequence values. The results of this calculation are potential dangers in service work activities. above the well. However, it is included in the low probability category, because work accidents occur within 5 (years) per 1 accident. So the risk control carried out can be said to be able to control risks in Work Over Well service activities, and monitoring and evaluation have been carried out well so far.  Keywords: Work Over & Well Service, Evaluation, Work risks.

Page 13 of 14 | Total Record : 134

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