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Contact Name
Sulistyono
Contact Email
sulistyono@polinema.com
Phone
+6281210481991
Journal Mail Official
jetm@polinema.ac.id
Editorial Address
Jl. Soekarno Hatta No. 9 Malang
Location
Kota malang,
Jawa timur
INDONESIA
Jurnal Energi dan Teknologi Manufaktur (JETM)
ISSN : 26208741     EISSN : 26207362     DOI : 10.33795/ath
Jurnal Energi dan Teknologi Manufaktur adalah jurnal bidang Teknik Mesin yang diterbitkan oleh Jurusan Teknik Mesin, Politeknik Negeri Malang. Jurnal Energi dan Teknologi Manufaktur diterbitkan dua kali dalam setahun pada bulan Juni dan Desember. Kami menerima artikel hasil penelitian ilmiah di bidang Teknik Mesin khususnya: Energi Terbarukan, Pemeliharaan Mesin Konversi Energi, Inovasi Teknologi Manufaktur, Pemeliharaan Mesin Manufaktur dan Analisis Sistem Manufaktur.
Articles 42 Documents
PERENCANAAN TURBIN AIR KAPASITAS 2 X 1 MW DI PLTM CIANTEN 1 KABUPATEN BOGOR ., Asrori; Yudiyanto, Eko
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1130.734 KB) | DOI: 10.33795/jetm.v1i01.4

Abstract

Minihidro Cianten 1 Power Plant (PLTM C-1) capacity 2 x 1 MW, located in Cianten river, Cibunian village, Pamijahan district, Bogor district. Preliminary planning data is with design head (Hd) = 27.7 m, design discharge per unit (Qd) = 4.0 m3 / s, power house elevation = +529,0 m. Turbine planning includes calculation of rated power output, type selection and number of turbines, specific speed velocity and runaway speed, runner diameter, turbine elevation setting, spiral casing and draft tube dimensions and pre-powerhouse design. Turbine performance and stability including pressure rise, speed rise and weighted average efficiency are also planned. Planning is based on calculations from international standard hydro powerplant planning guidance. The results of the calculations are verified by software and catalog of turbine manufacturers. The turbine specification results are as follows: 2 horizontal francis units, rated output power / unit (Pr) = 1000 kW (1 MW), turbine spin (n) = 600 rpm, turbine efficiency (T) = 0.92, (ns) = 298.6 rpm (M-kW), runaway speed = 1219 rpm, runner diameter = 0.769 m, runner weight (WR) = 294.05 kg, total turbine weight (WT) = 3060,37 kg. The stability of turbine operation is declared safe where the value of speed rise and pressure rise are 44.39% and 19.39% respectively. While the performance as a warranty from turbine manufacturers expressed with the value of weighted average efficiency of 88.67%.
ANALISIS KENYAMANAN DAN KESTABILAN KENDARAAN RODA DUA DALAM TINJAUAN SATU DERAJAT KEBEBASAN Nugroho, Pipit Wahyu
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (894.673 KB) | DOI: 10.33795/jetm.v1i01.5

Abstract

The two most important parameters in driving are comfort and stability. To get the best value from that parameter, then the role of the vehicle suspension system is very important to reduce the vibration due to road waves and keep the wheels sticking above the road. This study studied the effect of suspension type on comfort level and vehicle stability. The type of suspension is related to the value of spring stiffness and its damping value. While the vehicle is modeled in one degree of freedom. The test is carried out with vehicle loading including mass of vehicle and passenger for each type of suspension, ie soft, medium and hard. Vibration analysis is done using Matlab Simulink to get the acceleration response and its deflection response. The vibration response graph shows the comparison of comfort level and vehicle stability on the road profiles modeled in step, impulse, and sinusiodal functions. From the simulation results obtained that Soft and Medium Suspension can handle the vibration very well especially from the level of response speed for a relatively flat road. Meanwhile, Suspension type Hard very good damp vibration for high wavy road.
MENINGKATKAN DAYA MESIN DIESEL JENIS COMMON REEL YANG DILENGKAPI TURBOCHARGER DENGAN MENAIKKAN SUHU BAHAN BAKAR DAN SUHU UDARA Irawan, Bambang
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.464 KB) | DOI: 10.33795/jetm.v1i01.6

Abstract

This research aims is to increase engine power by raising the air temperature and fuel temperature into the engine and its effect on the resulting of SFC. Diesel engines that are use turbocharger, the air temperatures have increased but the fuel temperature is still fixed. The problem is how if the air temperature and fuel temperature are raised whether the engine power will increase and the SFC will change. This study was conducted with experiments using a car that the air temperature is adjusted up to 100oC and the fuel temperature that goes into the engine is made a maximum of 70oC. The test results show that with rising air temperatures and fuel temperatures going into the average power engine will raise and save fuel, power and saving SFC occurs at 90°C and 70oC fuel. Rotation of engine that can produce power and fuel-efficient is at around 2000 rpm.
OPTIMALISASI VARIASI VOLUME RESIN KOMPOSIT SERAT LIMBAH KARUNG GLANGSING Amrullah, Utsman Syah; Nugroho, Riyanto Heri
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1094.814 KB) | DOI: 10.33795/jetm.v1i01.7

Abstract

The waste of sacks glangsing of rice, fertilizer, sugar, animal feed and others can cause serious problems, example in the household scale causes the storage process in the warehouse very difficult because takes place, also invites mices to come. And on a larger scale the excessive use of sacks of glangsing causes waste and pollution to the soil due to the difficult and time-consuming decomposition. Efforts to utilize waste sacks glangsing are make it as a reinforcing fiber composite material. It is expected to be an alternative fiber replacement fiber material available on the market. The stiffness or flekstural test is taken to show comparison the composite. The composite material (with glass fiber reinforce) which made in equal thickness and simultaneously, showed that the resin volume of 15 cc applied to fiberglass fiber with an area of ??180 x 180 mm, with 3 layers have a deflection 1.2 mm at 31.5 grams load. While the volume of 30 cc resin gives a deflection 0.25 mm at the same load. While specimens that use glangsing sack fiber did not provide a good enough stiffness. At 31.5 gram load the deflections are very large 12 mm for 15 cc resin volume, and 9.8 mm for 25 cc resin volume, and 4.5 mm for resin volume of 30 cc, and 4.5 mm for resin volume 45 cc. Beside a large deflection, the composite with sack glangsing fibers is apparently subjected to delamination (exfoliation). Therefore, the use of glangsing sack fiber is not recommended.
DESAIN DAN ANALISIS PERUBAHAN FLUKS MAGNET TERHADAP EFEK PEREDAMAN PADA PROTOTIPE SUSPENSI PINTAR Wahjudi, Sadar
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.764 KB) | DOI: 10.33795/jetm.v1i01.8

Abstract

The vehicle is one of basic needs for supporting mobility of people. Comfort and safety are demanded in every vehicle, especially in its suspension system. The existing suspension systems can?t maximize comfort and safety because it is still hydraulic and pneumatic based, without magnetic system. The purposes of the analysis is building magnetic suspension system with variations at the amount of coil and analyzing absorbing time. The methods of the analysis are determining concept, making the designs, determining components specification, making device block diagram, making wiring diagrams, making the device, taking the absorbing time datas, and the analyzing the data. The results of the analysis are the amount of coil is straight compared to the magnetic force and absorbing time. The most significant solenoid is the one which has 900 coils and has absorbing time at 9.6 seconds.
PENGARUH VARIASI LIP THICKNESS PADA NOZZLE TERPANCUNG DENGAN SWIRL TERHADAP KESTABILAN API DIFUSI CONCENTRIC JET FLOW Witono, Kris; Takwim, Akhsanu
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (777.056 KB) | DOI: 10.33795/jetm.v1i01.10

Abstract

One of the factors that affect flame diffusion characteristics is the geometry of fuel nozzles in the installation of the combustion system. The nozzle shape greatly affects the turbulence that occurs between fuel and air. This process causes the formation of flow recirculation zones. This process thus produces homogeneous mixing and obtains near perfect combustion. The recirculation zones are zones arising from breaking the flow rate. So as to cause a vortex and backflow around the tip of the nozzle. It is this feedback which inhibits and simultaneously suppresses the flame so that the flow rate of the fuel mixture and the air is maintained lower or equal to the flame velocity. In this study, lip thickness variations in nozzles were used with swirls with variations of 0, 4, 8, 12, and 16 mm to determine flame stability of concentric jet flow diffusion. Fuel velocity and air are varied to obtain flame stability data. In addition, to support and reinforce the results obtained from this study, direct photograph and shadowgraph methods are used to obtain flow pattern visualization. The result of the research shows that the stability of flame concentric jet flow diffusion has increased along with the decreasing of lip thickness in nozzle. The largest flame stability area is obtained in 4 mm thick lip thickness.
PENGARUH DIMENSI ATOM TARGET D.C. MAGNETRON SPUTTERING TERHADAP SIFAT MEKANIS BAJA AISI 410 Jatisukamto, Gaguk
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 01 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.157 KB) | DOI: 10.33795/jetm.v1i01.11

Abstract

Micro machining technology uses AISI 410 steel as tools and surgical equipment. AISI 410 steel is hardenable so it is relatively easy to repair its mechanical properties. The weakness of heat treatment in AISI 410 steel for small dimensioned components causes distortion. Therefore, in this research, an effort to improve the mechanical properties of AISI 410 steel using physical vapor deposition (PVD) technique. The method of this research is to deposition Ti-N, Cr-N, W-N and Al-N with D.C magnetron sputtering technique. The sputtering process is carried out at room temperature by bombarding the target material (coating) with Argon gas, so that the bombed atoms will be deposited on the surface of the substrate (coated material). The results showed that the film layer deposition properties on the surface of AISI 410 steel were influenced by the characteristics of the formed nitride layer and the size of the atoms that struck the surface of AISI 410 steel.
PERENCANAAN PERAWATAN MESIN PUMP 107 DENGAN METODE REABILITY CENTERED MAINTENANCE (RCM) DI PT. PETROKIMIA GRESIK Utomo, Rezza Wira
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 02 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1033.285 KB) | DOI: 10.33795/jetm.v1i02.13

Abstract

PT. Petrokimia Gresik is one of the largest fertilizer companies in Indonesia, locatedin Gresik, East Java. The pump 107 engine on the Ammonia unit is often damaged due to itslargest size compared to other types of pumps, as well as the result of carrying thick orconcentrated fluid (bluish black) so that it is heavy for the drainage process. The purpose ofthis study is to plan and recommend the proposed treatment method on the pump enginebased on the method used to improve the working efficiency of the pumping machine 107and determine the failure mode and diagnosis of the effects of failure modes that occur in thecomponent. The method used is the Reability Centered Maintenance (RCM) method whichis expected to be able to produce maintenance or maintenance scheduling that is increasinglydirected so that it can improve the performance and efficiency of the engine, reduce repaircosts, and extend the service life of the machine itself. From this study, the results are in theform of Faliure Model And Effect Analysis (FMEA), FMEA table preparation is carried outbased on component function data and maintenance reports which can then be determined byvarious failures resulting in malfunction. From the compilation of FMEA, it can be seenwhat the causes of failure are and what impacts they have caused. Next, the value of MeanTime Between Failure (MTBF) pump 107-JA is 15,829 hours, pump 107-JB is 43,764 hoursand pump 107-JCM is 19,578 hours. Maintainability M (t) or Mean Time to Repair (MTTR)value on pump 107-JA is 2,914 hours, pump 107-JB is 3,411 hours, and pump 107-JCM is3,1 hours, Availability A (t) value is pump 107-JA at 84.44%, pump 107-JB at 92.76% andpump 107-JCM at 86.31%. The last one is found that the failure rate of pump 107-JA is0.063172, pump 107-JB is 0.02284 and pump 107-JCM is 0.051.
ANALISA TEKNOEKONOMI BIOGAS DARI ECENG GONDOK DENGAN STATER KOTORAN SAPI Mulyati, Meylinda
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 02 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.749 KB) | DOI: 10.33795/jetm.v1i02.15

Abstract

Water hyacinth is a waste that can be utilized by the community as an alternative potential for biogas energy. The formation of biogas from water hyacinth requires a residence time (LT) that is still long, which is between 30-35 days for the formation of methane. So that the process of forming methane is not too long, a stater is needed so that methanogenic bacteria can increase from cow dung so that the residence time is much shorter. The process of making biogas starts from making a digester, the process of taking water hyacinth by chopping water hyacinth, preparing cattle dung stater. The purpose of this study is to analyze technically and economically biogas from water hyacinth with cow manure stater. This research was carried out through several stages, namely: preparation of raw materials, stater and plastic biogas digester and techno-economic analysis. In this study the ratio of raw material 1: 1 (water hyacinth chopped 20 kg, water 20 kg) and the addition of stater cattle dung 6 kg. The results of this study are that the technical aspects of biogas start production after 10 days of filling the digester at pH 7.1. Biogas produced is known by direct flame test. Visible on the 10th day the resulting flame is still small, but this shows that the gas has been formed. The pH of the digester is between 4.7 and 8.5. The decrease in TS value from the inlet which is 46 kg to the outlet is 28 kg, indicating that there has been degradation in the substrate in the digester. On the economical aspect the investment cost of a biogas installation in a synthetic digester is IDR 1,500,000.00. Variable costs are the cost of water hyacinth, cow dung and water of Rp 150,000.00 per year. The Cost of Biogas Production is Rp 3,836.08 and if it is sold at a margin of 50% the selling price is Rp 5,800. The break even point in kilograms is 267.2 and in rupiahs is Rp 1.025,000.00. This payback period for investment in biogas business is 2.86 years.
ANALISIS REGRESI KECEPATAN ANGIN TERHADAP DAYA TURBIN ANGIN JENIS VAWT TIPE DARRIEUS-SAVONIUS Hakim, Luthfi -; Rijano, Achmad; Muzaki, Mochamad
Jurnal Energi dan Teknologi Manufaktur Vol 1 No 02 (2018)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (823.11 KB) | DOI: 10.33795/jetm.v1i02.16

Abstract

 The Darrieus-Savonius (DS) wind turbine has been widely developed with the aim of improving turbine performance that has been designed. DS wind turbine is a combination of two type of wind turbines, that is Darrieus and Savonius turbine, both turbines are intentionally developed In order to get self-starting on turbine Savonius with low wind speed and able to extract the speed of engine into energy well at high wind speed through Cherrie Darrieus. This study was conducted to analyze the performance of the DS turbine in the wind speed to be energized through the turbine rotation and power to be generated. The DS wind turbine is designed to start rotating at a speed of 8 m/s in velocity of wind, meanwhile the maximum power generated by turbine is 48,23 Watts.