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Machine : Jurnal Teknik Mesin
Published by Universitas Bangka Belitung
ISSN : 25022040     EISSN : 25810138     DOI : -
Core Subject : Engineering,
Automotive Engineering Mechanical Engineering
Arjuna Subject : -
Articles 180 Documents
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STUDY THERMAL OF COMPRESSOR POWER REDUCTION ON USING SOLID DRY PAD PRE-AIR COOLING SYSTEM Surya, I Gede Teddy Prananda; Wijaksana, Hendra
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.2803

Abstract

AbstractThe uses of compressor based air conditioning system has rapidly increased the consumption of fossil fuel energy resources and the degradation of environment quality. Massive study has been done worldwide to reduce energy consumption for compressor based air conditioning (AC) system. This study is subjected to investigate the use of solid dry pad as pre-air cooling for AC system. In this study, solid dry pad would be placed in the evaporator and condenser inlet air side. This placement was objected to give a pre-cooling effect for evaporator and condenser inlet air, so then the compressor could be operated with a lower power consumption. The experiment would be carried out within three level air mass flowrate of 0.293 kg/s; 0.319 kg/s; and 0.359 kg/s, for air velocity of 2.2; 2.4; and 2.7 m/s respectively, the cooling cabin is set into 30oC using a heater as a cooling load. As a results, it could be revealed that at the highest air mass flowrate of 0.359 kg/s, it could achieved the lowest compressor power consumption of 0.44 kW, within a higher cooling capacity of 2.625 kW, a higher condenser heat rejection of 3.622 kW and also higher COP of 5.9. Referring to those results, it can be concluded that when employing solid dry pad pre-air cooling for evaporator and condenser AC system, it could reduced compressor power consumption by 12.2%; 21.9% and 20% for air velocity of 2.2; 2.4; and 2.7 m/s respectively.Keywords : solid dry pad, pre-air cooling, compressor power reduction.
RANCANG BANGUN MODUL MESIN KONVERSI ENERGI BERTINGKAT: RANCANG BANGUN MODUL MESIN KONVERSI ENERGI BERTINGKAT Nulhakim, Lukman; Syafrizal, Syafrizal; Subekti, Mokhamad Is; Tauvana, Ade Irvan; Widodo, Widodo; Yusuf, Mirza
Machine : Jurnal Teknik Mesin Vol 10 No 1 (2024): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v10i1.3298

Abstract

Mesin konversi energi merupakan mesin yang merubah suata energi menjadi energi yang lain. Pemanfaatan energi yang dihasilkan oleh mesin konversi energi dapat digunakan untuk menggerakkan mesin konversi energi yang lainnya. Penelitian ini membuat modul mesin konversi energi bertingkat dengan metode regeneratif energi, dimana energi listrik dari sel surya digunakan untuk menggerakkan pompa, debit air yang dihasilkan pompa digunakan untuk menggerakan generator untuk menghasilkan energi listrik, dimana energi ini digunakan untuk menggerakan motor listrik pada kipas angin. Pembuatan modul ini meliputi perancangan, pembuatan dan perkitan. Pengujian dilakukan 30 menit pada masing-masing mesin konversi energi, dimana sel surya menghasilkan tegangan rata-rata sebesar 20,9 V, pompa menghasilkan debit air rata-rata 3,53 l/m, dan tegengan yang dihasilkan oleh generator sebesar 12 V, sedangkan kecepatan udara yang dihasilkan oleh kipas angin rata-rata sebesar 22,8 m/s.
STUDI PERFORMASI SUDU TURBIN ANGIN SAVONIUS TIPE VERTICAL AXIS BERBAHAN KOMPOSIT Homzah, Ozkar F.; Sundari, Ella; Sampurno, Rachmat Dwi; Utami, Ogi Meita; Rahmawati, Lily
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3317

Abstract

The increasing human population, the use of fossil energy such as oil also increases. While fossil energy is one of the largest contributors to carbon emissions that can cause climate change that can be done to control climate change is to switch to the use of renewable energy. The investigation takes the shape of a vertical axis Savonius turbine blade design. The blades are made of a composite material called carbon fiber, and the number of blades varies between 4, 6, and 8 pieces. The study's findings were tested utilizing a blower-generated wind source with wind speeds of 4m/s, 4.5m/s, and 5m/s. A wind tunnel consisting of acrylic material and pipes as a frame construction was used in the test. The test findings show that turbine blades with a total of four blades produce the maximum generator power of 0.274 watts at a wind speed of 5 m/s. Meanwhile, the turbine blade with 8 blades has the lowest output power at a wind speed of 4 m/s and a power value of 0.0028 W. Then, with 8 blades, it has a relatively low output energy compared to 4 and 6 blades. Therefore, the highest efficiency performance of wind turbine use is achieved by a turbine with a number of 4 blades with a maximum efficiency is 9,16% and the minimum efficiency it seen in a wind turbine with a number of blades 8 within 0,07%.
PENGARUH VARIASI TEKANAN KOMPAKSI PANAS TERHADAP DENSITAS DAN KEKERASAN AMC DIPERKUAT SiO2 Asep, Muhammad; ., Sugiyarto; ., Somawardi; Rusdy, Achmad; Sukanto, Sukanto
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3606

Abstract

Research on aluminum metal matrix composites reinforced with ceramics using powder metallurgy methods has recently been increasingly in demand to be developed. The goals of this study determined the effect of differences in compaction pressure on the density and hardness properties of the resulting composite. The research method used of is following the stages of the powder metallurgy process, which includes material preparation, mixing and compaction. The mixing of the composite constituent powders was carried out using the mechanical alloying method using a horizontal ball mill for 4 hours. While the hot compaction method used is two-way compression compaction, using a hydraulic pump. The matrix material used is recycled aluminum powder, and the reinforcing material is powder from tin mine tailing silica sand. The hot compaction process was carried out at 500 0C and held for 15 minutes. Two-way compacting pressure variations used 4400 Psi, 4500 Psi and 4600 Psi. Density testing refers to Archimedes with the ASTM B962-15 standard. Meanwhile, the hardness test used the Rockwell hardness testing machine, referring to the ASTM E18-15 standard. The results of the density test and hardness test showed a tendency for the value to increase with increasing compaction pressure applied. The highest density was 2.147 g/cm3 for a sample with a compaction of 4,600 Psi, with the highest hardness value being 53,11 HRB. Based on micro-photographs, it shows that the interlocking mechanical bonds at lower compaction pressures tend to be weak, fractures at the grain boundaries are clearly visible and the pattern of damage tends to show brittle/brittle fractures.
VARIASI SUDUT POTONG DAN KECEPATAN POTONG TERHADAP LAJU PEMAKANAN MATERIAL SCM 440 Pratama, Arianda; Kurniawan, Zaldy; -, Husman; Wahyudie, Ilham Ary
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.3611

Abstract

During the workpiece turning process, several factors affect the final workpiece, such as the cutting angle and cutting speed. The purpose of this study was to determine the effect of variations in cutting angle and cutting speed on the material consumption rate of SCM 440. The method used in this study is the Response Surface Methodology (RSM), with a two-parameter design, each of which has three levels for each parameter variation. . The results of data analysis obtained eigen values ​​with different signs (positive and negative) which indicated that the stationary point values ​​were in the form of saddle points with a stationary point values of x1 (cutting angle) of -1.686 and x2 (Vc) of 0.199. From the uncoded process, the optimal value for the MRR factor is obtained, namely the cut angle of 10.64° and Vc of 15.28 m/min. The optimum feed rate for SCM 440 material is obtained at an optimal value of neither minimum nor maximum or a saddle point shape at a cutting angle cut of 10.64° and Vc of 15.28 m/min with an MRR area of ​​300-400 mm3/minute.
PENGARUH PARAMETER PENGELASAN TERHADAP HASIL UJI BENDING DENGAN STANDAR AWS PADA BAJA ASTM A36 Veronika, Rika; Abdillah, Hamid; Hidayat, Ma’mun; Nainggolan, Irwan Kalam
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.3659

Abstract

In this modern era, technology is progressing rapidly, including welding techniques. In this welding process, a welder has a manual called WPS (Welding Procedure Specification). The role of WPS in welding is very important, this is because WPS is made to achieve good welding results and according to what is desired. Therefore, research regarding the suitability of WPS with welding results was carried out. This study uses an experimental method by performing GMAW (Gas Metal Arc Welding) welding in the 1G position and the test process is carried out with a bending test. This bending test process is carried out to find out whether the WPS used is in accordance with the desired results or not. In the bending test results that have been carried out by welding experiments twice, the bending test results are 3.528 kN/mm 2 . In this welding process, more optimal results were obtained using the amperage parameters of 94A – 106A and a voltage of 23 V – 25 V. In this process no visual welding defects were found so that this WPS could be used by trainees.
UJI KETELITIAN CETAK PRODUK LENGKUNG PRINTER 3D ANET A8 Burhanuddin, Yanuar; Candra, Made Gita Arya; Teguh Panuju, Achmad Yahya; Harun, Suryadiwansa
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3799

Abstract

This study aims to determine the accuracy of the Anet A8 3D Printer in printing curved products with the infill speed, print speed and layer height factors in order to obtain optimal results and determine the most influential parameters in printing curved products using the Anet A8 3D Printer. The method used in testing the accuracy of printing 3D printing products is Taguchi L9. From this study it can be concluded that the most optimal process parameters for the accuracy of the dimensions of the specimen diameter are successively for accuracy, namely layer height (0.3000 mm), infil speed (50 mm/s) and layer speed (30 mm/s) then the most optimal process parameters for the accuracy of the curved dimensions of the specimen are successively for accuracy, namely layer height (0.2000 mm), infil speed (50 mm/s). s) and layer speed (40 mm/s). The results of the ANOVA analysis show that the most contributed parameter in printing curved specimens with the diameter dimension is the layer height and the curved dimension is the infill speed.
RANCANG BANGUN TERMOKOPEL DATA LOGGER BERBASIS ARDUINO MEGA 2560 SKALA LABORATORIUM Efendi, Rustam; Darwin, Darwin; Badia, Bahdin Ahad; Tando, Arjal; Herlina, Herlina; Padang, Welly Liku
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.3803

Abstract

Pengukuran suhu merupakan salah satu hal yang terpenting dalam mengukur kinerja suatu proses pindah panas. Pengukuran suhu biasanya dijumpai di lapangan menggunakan termometer air raksa atau sensor suhu yang memiliki display digital dan dicatat manual. Pengukuran suhu dengan menggunakan cara ini mulai ditinggalkan karena untuk mengetahui kinerja suatu mesin dibutuhkan data yang banyak agar dapat diperoleh kinerja mesin yang akurat. Data logger adalah alat yang sering dijumpai dalam pengukuran suhu baik di laboratorium-laboratium teknik di kampus maupun industri. Data logger merupakan alat ukur suhu yang termutakhir hari ini. Hanya saja data logger yang tersedia di pasaran masih mahal sehingga butuh biaya lebih untuk membelinya. Arduino merupakan mikrokontroler dengan harga yang terjangkau dan dapat disambungkan dengan berbagai sensor dan dapat dirancang layaknya seperti data logger. Metode yang digunakan pada penelitian adalah rancang bangun dengan mengembangkan termokopel data logger. Hasil penelitian menunjukkan bahwa 12 channel termokopel tipe-K dengan penguat sinyal Max6675 dapat berfungsi dan data dapat dikumpulkan ke Micro SD.
DESAIN DAN ANALISA VELG MOBIL 15 INCH TIPE ALUMINIUM ALLOY 6061 MELALUI SIMULASI PENGUJIAN DYNAMIC CORNERING FATIGUE SESUAI STANDAR SAE J 328 Gamayel, Adhes; Ikhsannudin, Moh. Nova; Zaenudin, Mohamad
Machine : Jurnal Teknik Mesin Vol 10 No 1 (2024): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v10i1.3867

Abstract

The rim is the part of the wheel that gets the force and tension because of holding the vehicle's weight in a stationary or moving position. Wheels have a critical zone related to force and stress in the area called the spoke. This study aims to compare several wheel models that have been modified to find the minimum critical value. The wheels that were analyzed consisted of model 1 wheels with a spoke radius of 4 mm, model 2 wheels with a spoke radius of 8 mm and model 3 wheels with a spoke radius of 12 mm. The research method was carried out using a static structural analysis method with a reverse engineering approach. The research was carried out in several stages related to dynamic cornering fatigue testing and loading. The results of this test are compared with the standard of the Society of Automotive Engineers (SAE) J 328. Wheel design using Autodesk Inventor 2016 software and simulated using ANSYS Workbench R1 2022 software. The results of the simulation are the equivalent elastic strain, equivalent von misses, and fatigue life values ​​of the three-wheel models. Model 1 alloy wheel design has an equivalent von misses value of 75.022 MPa, an equivalent elastic strain of 0.0016627 mm/mm and a fatigue life value of 1,000,000 rounds. The model 2 alloy wheel design has an equivalent von Misses value of 119.53 MPa, an equivalent elastic strain of 0.001862 mm/mm and a fatigue life value of 1,000,000 rounds. The model 3 alloy wheel design obtained an equivalent von misses value of 136.96 MPa, an equivalent elastic strain of 0.0019852 mm/mm and a fatigue life value of 841,040 rounds. Of all the wheel models, seen from the simulation results, they meet the SAE J 328 standard
RANCANG BANGUN MESIN PEMOTONG PIPA DENGAN LAS OXY ACETYLENE Ariksa, Jeri; Setiawan, Yudi; Kadriadi, Kadriadi; Amiruddin, Amiruddin; Pratama, Angga Bahri
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3914

Abstract

Metal cutting is the stage of processing profile raw materials and steel plates according to the cut marks that have been set in the marking process. One of the metal cutting techniques is to use oxy acetylene welding where the cutting occurs due to the reaction of oxygen and steel. Oxy acetylene welding is a manual cutting and welding process, in which the surfaces to be joined are heated until melted by the flame of acetylene gas, namely burning C₂H₂ with O₂ with filler metal or without filler metal where the joining process is without pressure. Besides for welding purposes (connection), oxy acetylene welding can also be used as preheating, brazing, cutting and hard facing. In the process of cutting iron pipes using oxy acetylene welding manually, the problem that is often found is the results of uneven and not straight cuts. This causes a leveling process to be needed on the edges that are cut so that they are flat and straight. In this research, a pipe cutting machine with oxy acetylene welding has been made which aims to produce straight, smooth, and even pipe cutting. The pipe cutting machine that has been made can produce flat, smooth, and straight iron pipe cuts on iron pipes with a diameter of 4.5 inches, 3.5 inches and 3 inches with a cutting time of 32 seconds, a motor wave rotation speed of 5.8 Hz, and a cut tolerance of ± 3 mm.

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