Journal of Energy, Mechanical, Material and Manufacturing Engineering
Journal of Energy, Mechanical, Material and Manufacturing Engineering Scientific (JEMMME) is a scientific journal in the area of renewable energy, mechanical engineering, advanced material, dan manufacturing engineering. We are committing to invite academicians and scientiests for sharing ideas, knowledges, and experiences in our online publishing for free of charge. It would be our pleasure to accept your manuscripts submission to our journal site.
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<![CDATA[Thermal Design Optimization of No Phase Change Shell-and-Tube Heat Exchanger using Particle Swarm Algorithm ]]>
<![CDATA[Vera Pangni Fahriani]]>;
<![CDATA[Reza Setiawan]]>;
<![CDATA[František Hrdlička]]>;
<![CDATA[Prihadi Setyo Darmanto]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i1.11766
<![CDATA[Shell-and-tube heat exchanger is designed to satisfy certain requirements such as heat transfer capability, allowable pressure drop and limitation of size. Beside such requirements, it is important to consider economical point of view to get lowest total cost. In this study, computational program and optimization for thermal design shell-and-tube heat exchanger were built for liquid to liquid with no phase change process in four variables design parameters using Bell-Delaware method. The design variables were tube size, tube length, baffle cut to shell inside diameter ratio and central baffle spacing to shell inside diameter ratio. Particle swarm algorithm was used as optimization method to get lower solution for economical point of view shell-and-tube heat exchanger. The results from two study cases show that particle swarm algorithm got lower total cost from the original design. The total cost decreased 28.84 % in first study case and 52.57 % in second study case from the original design.]]>
<![CDATA[Corrosion protection by sacrificial anode method on underground solar pipe installation: a case study in the Lombok Gas Engine Combine Cycle Power plant (Peaker) 130-150 MW ]]>
<![CDATA[Nasmi Herlina Sari]]>;
<![CDATA[Suteja]]>;
<![CDATA[R.C. Lelio]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.11519
<![CDATA[This study aims to determine cathodic and design corrosion protection by sacrifice anode method in underground solar pipe installations. The material used is a steel pipe. The length of pipes in the ground 35,384 m and a diameter of 150 mm. The type of anode used is high magnesium. The result shows that the large area that must be protected 16.67 m2. The pipe protection current requirement is 0.81 A. The total number of anodes is 208.69 kg. Anode installation distance 2.36 m. Requirement of protection current based on the distance between the anode is 12.06 A. To protect the pipe along 35,384 m, the ideal amount of magnesium anode used is 208.69 kg. The results of the verification of the cathodic protection system design of the anode victim of the lower solar pipe show that the total number of anodes to supply a current of 0.81 A in order to protect the pipe is 15 pcs.]]>
<![CDATA[The The Effect of Nitrogen on Methane Gas Flame Propagation Characteristic in Premix Combustion ]]>
<![CDATA[Djoko Wahyudi]]>;
<![CDATA[Dani Hari Tunggal Prasetiyo]]>;
<![CDATA[Alief Muhammad]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.16164
<![CDATA[The electric engine is a serious opponent of the fuel engine. However, this does not mean that fossil fuels should be abandoned, but rather makes it a great challenge and a strong reason to develop fossil fuels to be even more efficient. Increasing the combustion efficiency of the current fuel engine can be done in various ways and methods. One of the many ways to increase combustion efficiency in terms of fuel is by mixing the fuel with other compounds. This article examines the effect of mixing variations of methane gas with nitrogen gas. The flame propagation speed in the midpoint of the mixture of stoichiometry (methane-air) and Nitrogen (N2) on the top ignition is 2233.33 mm/s at N2 10% of the third frame and at lower ignition, the speed is 3550.03 mm/s at N2 20% of the second frame. In addition, the bottom ignition experiment has a very large effect on maximizing the speed of flame propagation, especially in the 20% N2 sample. Therefore, the highest improvement in combustion efficiency is obtained by using a 20% N2 mixture and at the bottom ignition condition.]]>
<![CDATA[Microstructure and Mechanical Properties of a Partially Recrystallized Aluminium Alloy having Varying Cu/Mg Ratio ]]>
<![CDATA[Md. Jasim Uddin]]>;
<![CDATA[Hossain Rashed]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.16587
<![CDATA[Heat treatable Al-Zn-Mg-Cu alloys are widely used in automobile industries, aerospace and military applications. This study investigates the effects of different amounts of copper and magnesium on microstructure and mechanical properties. The as-cast alloys prepared in a permanent mould showed a dendritic microstructure and the intermetallic phase surrounded by secondary phases. As-cast microstructure was refined substantially during hot rolling processes. The ultimate tensile strength and hardness values both in hot-rolled and aged conditions along longitudinal and transverse directions were found greater for the alloy containing 1.33 wt.% copper and 1.01 wt.% magnesium, whereas strain to fracture values for alloy 01 with 1.09 wt.% copper and 1.8 wt.% magnesium. The fracture surface of the tensile sample having relatively lower amount of copper content revealed dimple rupture behaviour, while higher 4.32 wt.% copper content indicated transgranular and cleavage fracture. A similar pattern was also observed along the transverse direction. Overall, copper appeared to be more effective in strengthening of the studied alloys.]]>
<![CDATA[Analysis of Pressure Laboratory Scale Swing Adsorption (PSA) Varian Design using Zeolite 13X as Adsorben Medium ]]>
<![CDATA[Dhimas Satria]]>;
<![CDATA[Teguh Kurniawan]]>;
<![CDATA[Rina Lusiani]]>;
<![CDATA[Erny Listijorini]]>;
<![CDATA[Imron Rosyadi]]>;
<![CDATA[Nidya Jullanar Salman]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.17777
<![CDATA[The demand of high quality of oxygen increases, especially in the middle of covid -19 pandemic. The importance recentl is using technology and material to improve the quality of oxygen. Therefore a study was conducted which aim to obtain the best varian on concept desain concept analysis of pressure swing adsorption (PSA) which utilize adsorption material of sintetic zeolite 13x. the method used is Quality Function Deployment (QFD) which is information collecting about the need and the willingness of users. The steps carried out to obtain the best variant design concept of pressure swing adsorption are as follow: requirement list determination, priority scale determination, house of quality making, PSA specification determination, design concept and the best variant determination. The result obtained is the selected the best variant which was 10th variant because it has been fulfilled the requirement the specification list because this variant when PSA was used is bed or column type is single bed with the capacity of zeolite of 13X 2 – 2,5 kg, the valve mechanism is manual so that it need no automatic control system, the electricity source was from PLN and need no accumulator and the product of )2 using 1 single tank which is simpler.]]>
<![CDATA[Application of RSM Method in Optimization of 3D Printing Machine Process Parameters Using Biocomposite Materials (PMMA/Hydroxyapatite) to Get the Highest Tension Strength ]]>
<![CDATA[Angger Bagus Prasetiyo]]>;
<![CDATA[Kartinasari Ayuhikmatin Sekarjati]]>;
<![CDATA[Alva Edy Tontowi]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.17780
<![CDATA[Solution developed to improve the structure of human bone in synthetic bone. Composites manufactured from polymethylmetacrylate are frequently employed in the medical field (PMMAPure PMMA, on the other hand, has restricted mechanical qualities, as well as being less compatible, rigid, and non-bioactive. This research will mix PMMA material with hydroxyapatite (HA) material. The material's composition is PMMA: MMA = 1: 1, with a hydroxyapatite (HA) to PMMA powder ratio of 0.50: 1 (w/w). The material will be printed through a 3D Printing machine which has a 1.5 mm nozzle. This 3D Printing machine undergoes periodic development, but the results obtained are not in accordance with the needs, especially the tensile strength of the specimen. Therefore, it is necessary to conduct research to determine the ability of the 3D Printing machine printing process by optimizing the parameters of the 3D Printing machine. Experimental results and analysis using the RSM method show the machining parameters of the 3D printing machine on PMMA/HA material to get the highest optimal tensile strength at the point of 13,670 mm/s for the perimeter speed parameter, 76,330 mm/s for the infill speed parameter and 33,670% point for the fill density]]>
<![CDATA[Pitch Pitch ratio effect on the effectiveness of condenser for essential oil distillation ]]>
<![CDATA[Nicolas Titahelu]]>;
<![CDATA[Jonny Latuny]]>;
<![CDATA[Cendy Sophia Edwina Tupamahu]]>;
<![CDATA[Sefnath Josep Etwan Sarwuna]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.19006
<![CDATA[This research is focused on the usage of the helical coil pipe to shorten the distillation time which then aimed to obtain a helical coil pipe condenser configuration with an effective pitch ratio to shorten the distillation time. The pitch ratio value is varied from 2.10 to 4.20. The experimental results show that the effectiveness of the condenser decreases as the pitch ratio increases, where the maximum effectiveness at the pitch ratio of 2.10 is 74.13%, while the minimum pitch ratio of 4.20 is 67.19%. The maximum effectiveness is obtained at a pitch ratio of 2.10 due to a larger heat transfer contact area which results in an increase in the actual heat transfer as well. The experimental results with a pitch ratio of 2.10 obtained a condensate temperature of 37.29 °C which is 22.71 °C and a distillation time of only 2 hours compared to the results of the straight pipe condenser used by the SME group. The effect of the helical coil pipe pitch ratio obtained from the experimental results with a mean deviation value of 2.81% compared to the numerical study. It is concluded that the maximum condenser effectiveness is at the minimum pitch ratio value and then the pitch ratio of 2.10 can be used for the clove essential oil distillation process.]]>
<![CDATA[Prediction Coefficient of Pressure and Wall Friction for Turbulent Flow over a Backward Facing Step ]]>
<![CDATA[Zaid Al Kahfi Ramadhan]]>;
<![CDATA[Mohamad Yamin]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.19250
<![CDATA[Backward Facing Step(BFS) has been widely recognized for its application to turbulence fields in deep flow. The flow separation occurs due to a sudden change in geometry. To know the phenomenon of flow in BFS can be done with a numerical approach. In some cases, numerical studies have a weakness in the computational time aspect. This study focuses on the prediction of Cp and Cf on BFS flow using Machine Learning. It begins with a meshing sensitivity approach with the number of elements as much as 22188 cels in a numerical simulation with a step height of 12.7 mm. This numerical study will be carried out using Reynolds number in the turbulent region of Re 36000. The turbulent k-omega shear stress transport model was used to perform numerical simulations in the open-source software package OpenFOAM®. Simulation data in the form of speed and pressure at each node that represents the form of turbulence is used as a dataset in Machine Learning. Three Machine Learning models, namely Multi-Layer Perceptron, RandomForrest, and Multiple Linear Regression are used to predict Cp and Cf. The effectiveness of each of these models is -101.5% for Multi-Layer Perceptron, 96% for RandomForrest, and 99% for Multiple Linear Regression. With the best effectiveness value, the Machine Learning Multiple Linear Regression model is used to get the predicted Cp and Cf values from variations in step height of 9.525 mm, 6.35 mm, and 3.175 mm. With these results, it shows that the Machine Learning model can be used to predict the BFS turbulence flow obtained from the results of the OpenFoam® numerical approach.]]>
<![CDATA[The Role of Flue Gas Inhibitor on Stabilizing Heptane Flame in Meso Scale Combustor ]]>
<![CDATA[Achmad Fauzan Hery Soegiharto]]>;
<![CDATA[Ali Mokhtar]]>;
<![CDATA[Sudarman]]>;
<![CDATA[Satworo Adiwidodo]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.19458
<![CDATA[Mesoscale combustor is one of the components that serves to generate heat on a micro power generator. As one of the components of a micro power generator, meso scale combustor serves to supply heat through the combustion process. The stability of the flame in the combustion chamber meso scale combustor is influenced by the temperature of the combustion chamber. One way to maintain a high temperature in the combustion chamber is to insert a flue gas stainless steel mesh resistor.. This research aims to prove the role of flue gas mesh resistors in stabilizing the flame on the meso scale combustor... The heptane liquid fuel flame was successfully stabilized at an equivalence ratio of ɸ 0.81 – 1.29 and a reactant flow velocity of 26.12 – 36.83 cm/s. The higher the rate of reactant flow, the higher the flame temperature until it reaches 502ºC. Combustor with flue gas mesh resistor is 10 mm away has a flammability limit that is not wider than a combustor without flue gas mesh resistor.]]>
<![CDATA[Design of Hollow Cone Water Gate with Hydraulic System in Karangkates Dam ]]>
<![CDATA[Mulyono Mulyono]]>;
<![CDATA[M Irkham Mamungkas]]>;
<![CDATA[Candra Dwi Febrian]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 2 (2021) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v6i2.19461
<![CDATA[Water gate system in a dam is to control the water flow. It also controls the water surface elevation being stored or routed. The hollow cone type was designed as it has the most efficient energy of dissipation. It also has a simple construction, a relatively affordable cost, and it can be operated electromagnetically or in the hydraulic system. The hollow cone design gives a stable debit coefficient and can be implemented on a big scale. The method used in this design is the data collection and calculation of dimension scale and water gate capacity. The result of the calculation determined the capability of the hollow cone water gate to control the maximum debit of 5,9251 m³/s, the operation load of 2.875,92 kg, tensile stress around the valve 2,0108 kg/mm2. The design of the hollow cone system used the SC30C of the M20 nut.]]>
