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Program Studi Teknik Mesin, Fakultas Teknik, Universitas Lambung Mangkurat Jalan Jenderal Achmad Yani KM 35,5 Banjarbaru, Kalimantan Selatan - 70714
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JTAM ROTARY
Published by Universitas Lambung Mangkurat
ISSN : 27216225     EISSN : 27456331     DOI : https://doi.org/10.20527/jtam_rotary.v2i2
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
JTAM Rotary diterbitkan oleh Program Studi Teknik Mesin Fakultas Teknik Universitas Lambung Mangkurat. JTAM Rotary merupakan jurnal terbuka yang dapat diakses siapapun, baik itu peneliti, akademisi, dan praktisi di bidang teknik mesin. JTAM Rotary terbit dua kali dalam setahun, yaitu pada bulan April dan bulan September. JTAM Rotary berfokus pada jurnal-jurnal mahasiswa teknik mesin di bidang keahlian Konversi Energi, Desain dan Konstruksi, Manufaktur, dan Rekayasa Material.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 121 Documents
 1   2   3   4   5 
ANALISIS HEAT TRANSFER COEFFICIENT SEBELUM DAN SESUDAH OVERHAUL PADA ECONOMIZER BOILER DI PT. JAPFA COMFEED BANJARMASIN Muhammad Ramlan; Aqli Mursadin
JTAM ROTARY Vol 1, No 1 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i1.1395

Abstract

In some heat exchanger tools are widely used in industries such as power plants, oil refineries, chemical plants and petrochemicals, natural gas industry, refrigeration, and so forth. One example of a heat exchanger found in the poultry feed industry in PT.Japfa Comfeed Branch of Banjarmasin is the economizer, where the hot vapor of combustion in the furnace is used as a feed water heater before entering the boiler. From the results of the study known in the economize coefficient of the highest heat transfer before the overhaul of 1.393.1 Btu / jam.ft2.oF at 92.5 oC, and the lowest heat transfer coefficient before the overhaul of 1,334.8 Btu / jam.ft2. oF at 101 ° C. after the overhaul, it is known that the highest economizer heat transfer coefficient is 1,419.7 Btu / hour.ft2.oF at 99oC, and the lowest heat transfer coefficient after the overhaul is 1,378.6 Btu / hr.ft2.oF at 104.5 oC. The increase in heat transfer coefficient value after overhaul is 6.4% of the heat transfer coefficient before overhaul. Keywords: Economizer, Boiler,  Heat Transfer Coefficient
PROSES MANUFAKTUR TURBIN ANGIN SUMBU VERTIKAL TIPE DARRIEUS Rian Effendi; Rudi Siswanto
JTAM ROTARY Vol 1, No 2 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i2.1742

Abstract

Wind turbine is one of the tools yamg work to take advantage of wind allergy. Wind turbines based on the type of rotor there are two types of Darrieus wind turbines and Savonius wind turbines. In the manufacturing process using a type of wind turbine type Darrieus. The darrieus turbine is a wind turbine that utilizes the lift style on the rotor blade. This turbine requires initial energy to spin. The formulation of the problem in making this wind turbine is How does the manufacturing process of vertical turbine type darrieus wind turbine and How much is the cost budget on the manufacturing process of the darrieus type verical wind turbine. The components of the wind turbine are the foot frame, bearing bearings, bearings, shafts, disks, blade arms, blades, transmission pulleys and belts-v, while the tools and machinery used in the manufacturing process are electric welding tools, electric grinding wheels, , hand drilling machine, sitting drilling machine, cut lever, riverter pliers, acetylene welding and lathe. Keywords: Wind Turbine, Turbine Components, Tools and MachinesApple, JM. Tata Letak Pabrik dan Pemindahan Bahan. Bandung : Penerbit ITB, Terj. Nurhayati Mardiono.,1990.Maheswari Hesti,Achmad Dany Firdauzy.2015. “Evaluasi Tata Letak Fasilitas Produksi Untuk Meningkatkan Efisiensi Kerja Pada Pt. Nusa Multilaksana. Fakultas Ekonomi”. Jakarta:Universitas Mercu Buana.Susetyo Joko dkk.2010. “Perancangan Ulang Tata Letak Fasilitas Produksi Dengan Pendekatan Group Technology Dan Algoritma Blocplan  Untuk Meminimasi Ongkos  Material Handling”. yogyakarta:AKPRIND.Nova St Meirizha. 2014. “Perancangan Ulang Tata Letak Fasilitas Pada Hanggar Pemeliharaan Pesawat Hawk 100/200  Di Pangkalan Udara Roesmin Nurjadin”. Riau: Program Studi Teknik Industri, Fakultas Teknik,Universitas Muhammadiyah.Wignjosoebroto, sritomo. Tata letak pabrik dan pemindahan bahan. Surabaya: penerbit guna widya., 1996.
ANALISIS PERPINDAHAN PANAS GLAND STEAM CONDENSOR DI PT PJB UBJOM PULANG PISAU KALTENG Muhammad Rizky Hidayat; Aqli Mursadin
JTAM ROTARY Vol 2, No 2 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i2.2416

Abstract

Gland Steam Condensor (GSC) adalah alat penukar panas yang mengembunkan uap dari segel poros turbin. Steam bekas ini akan memanaskan air kondensat dari pompa kondensat yang dialirkan melintasi kondensor Gland Steam. Karena panas diserap oleh air kondensat, maka steam bekas dari seal poros akan mengembun kemudian dialirkan ke hotwell hingga bercampur dengan air hotwell. Dari hasil penelitian koefisien perpindahan kalor tertinggi pada tabung adalah 80.491,93 btu/hr ft2 pada hari Rabu jam 14.00. Diketahui bahwa koefisien perpindahan panas pada tabung terendah adalah 79.011,94 btu/hr ft2 pada hari Senin jam 16.00. Koefisien perpindahan panas tertinggi pada cangkang adalah 5.294.695 btu/jam ft2 pada hari Jumat pukul 14.00, koefisien perpindahan panas cangkang terendah adalah 2.762.553 btu/jam ft2 pada hari Selasa pukul 11.00. Perpindahan panas aktual tertinggi adalah 1.528.694.1 btu/jam hari Jumat jam 14.00, perpindahan panas aktual terendah adalah 713.159.522 btu/jam pada hari Kamis jam 8.00. Diketahui laju perpindahan kalor maksimum sebesar 1.797.918 btu/jam pada pukul 14.00, laju perpindahan kalor maksimum sebesar 790.348 btu/jam pada hari Kamis pukul 08.00. Diketahui efisiensi tertinggi sebesar 90,25% pada hari Kamis pukul 08.00. Dengan efisiensi rata-rata antara kisaran 86,29%. Gland Steam Condensor (GSC) is a heat exchanger it condenses steam from a turbine shaft seal. This used steam will heat condensate water from a condensate pump which is flowed across Gland Steam condensor. Because the heat is absorbed by condensate water, used steam from the shaft seal will condense and then flow to hotwell until it mixes with hotwell water.  From the results of the study the highest heat transfer coefficient on the tube is 80,491.93 btu/hr  on Wednesday at 2:00 p.m. It is known that the heat transfer coefficient on the lowest tube is 79,011.94  btu/hr on Monday at 4:00 p.m. The highest heat transfer coefficient on the shell is 5,294,695 btu/hr on Friday at 14:00, the lowest shell heat transfer coefficient is 2,762,553 btu/hr on Tuesdayat 11: 00. The highest actual heat transfer is 1,528,694.1 btu/hr on Friday at 2:00 p.m., the lowest actual heat transfer is 713,159,522 btu/hr on Thursday at 8:00. It is known that the maximum heat transfer rate is 1,797,918 btu/hr at 2:00 p.m., the maximum heat transfer rate is 790,348 btu/hr on Thursday at 8:00. It is known that the highest efficiency is 90.25% on Thursday at 8:00. With average efficiency between the range of 86.29%.
ANALISIS PERFORMA PRIMARY AIR HEATER (PAH) PLTU ASAM ASAM UNIT I – KALIMANTAN SELATAN Rinto Muhaimin S; Abdul Ghofur
JTAM ROTARY Vol 1, No 2 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i2.1747

Abstract

Power plan has an important role in the electricity supply bussiness, one of them is PLTU Asam Asam which is Unit Pelaksana Pembangkitan Asam Asam. By using fuel coal fired type, this work continously to generate maximum power in generating electricity. In terms working to have maximum power continuously in boiler, Boiler have equipment Primary Air Heater (PAH) to repairing the efficiency. To get best performance Primary Air Fan (PAH) is doing routine maintenance.The Effect is routine maintenance for repairing, abrasive and corrosive material Primary Air Fan (PAH) to be air leakage. This final project aims to know performance before and after repairing compare commissioning perform. In this final project compiling, the using methods are literature study, observation, data processing, data analyzing, and conclusion. Literature study is searching of source for reference, then the observation is done by collecting data based on the parameters required. These data are analyzed to derive conclusions from the object being observed.The result of final project research shows that different escalation occurred after repairing. This can proven by calculation and analysis of data which obtained before repairing the efficiency 68,5% and work 68,6%, and Air leakage reduce 83,18%% and work 70,55%. Keywords: Efficiency, Performance, Boiler, Heat Loss Method
PROSES MANUFAKTUR MESIN POLES DAN AMPELAS UNTUK PROSES METALOGRAFI M. Ikhsan Almadani; Rudi Siswanto
JTAM ROTARY Vol 2, No 1 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i1.2001

Abstract

Mesin poles dan amplas adalah salah satu alat yang bekerja menggunakan energi listrik. Sifat mekanik suatu logam atau paduan dapat diamati, salah satunya adalah dengan menganalisis struktur mikro material. Pengujian metalografi dilakukan untuk mengamati struktur mikro. Dalam proses pengerjaan sampel pengujian metalografi selalu melibatkan mesin poles dan amplas. Perumusan masalah dalam pembuatan mesin poles dan amplas ini adalah “Bagaimana proses pembuatan mesin poles dan amplas dan berapa biaya pembuatan mesin poles dan mesin abrasif”. Komponen pada mesin adalah rangka, motor, bantalan, katrol, cakram yang dipoles, reservoir, pompa air, dan keran air, sedangkan alat dan mesin yang digunakan dalam proses pembuatan adalah alat las listrik, penggiling listrik, penggiling duduk, mesin bor tangan, mesin bor duduk, tuas potong, tang sungai, pengelasan asetilena dan mesin bubut. The polishing and sandpaper machine is one of the tools that works using electrical energy. The mechanical properties of a metal or alloy can be observed, one of which is by analyzing the microstructure of the material. Metallographic testing is carried out aimed at observing the microstructure. in the process of working on metallographic testing samples involving a polishing machine and sandpaper. The formulation of the problem in making this polishing machines and sandpaper is “What is the process of manufacturing polishing machines and sandpaper and how much is the cost of manufacturing polishing and abrasive machines”. Components on the engine are frame, motor, bearing, pulleys, polished discs, reservoirs, water pumps, and water taps, while the tools and machines used in the manufacturing process are electric welding tools, electric grinders, sitting grinders, hand drill machines, sitting drill machines, cut levers, riverter pliers, acetylene welding and lathes.
ANALISA PERFORMA TURBIN GAS TIPE CW251 B11 PADA SYSTEM PEMBANGKITAN LISTRIK TENAGA GAS SEKTOR PEMBANGKITAN BALI Haleonar Mycson Karusitio Silaban; Abdul Ghofur
JTAM ROTARY Vol 2, No 2 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i2.2412

Abstract

Di Bali, kebutuhan listrik berdasarkan data PLN 446.172 MW. Untuk memenuhi kebutuhan beban ini, PLN Bali mengandalkan empat pembangkit listrik berbeda di Pesanggaran, Gilimanuk, Pemaron, dan Pontianak. Sebagian besar pembangkit listrik di Bali menggunakan Pembangkit Listrik Tenaga Gas. Pada pembangkit gas generasi Bali terjadi kerusakan pada bagian turbin. Untuk mengetahui pengaruh kerusakan tersebut, dilakukan penelitian. Dari penelitian ini diketahui bahwa hubungan antara efisiensi dan kinerja suatu turbin gas adalah jika performansi naik maka efisiensi akan meningkat. Temperatur masuk turbin dan temperatur keluar turbin akan mempengaruhi kinerja turbin.In Bali, electricity demand is based on PLN data of 446,172 MW. To meet this load requirement PLN Bali relies on four different power plants in Pesanggaran, Gilimanuk, Pemaron, and Pontianak. Most electricity generation in Bali uses Gas Power Plants. In the gas generation of the Bali generation there is damage in the turbine section. To find out the effect of this damage, a study was conducted. From this study it is known that the relationship between efficiency and the performance of a gas turbine is that if the performance rises, efficiency will increase. The turbine intake temperature and turbine exit temperature will affect turbine performance.ANALISA PERFORMA TURBIN GAS TIPE CW251 B11 PADA SYSTEM PEMBANGKITAN LISTRIK TENAGA GAS SEKTOR PEMBANGKITAN BALI
ANALISIS KEANDALAN (RELIABILITY) PADA MESIN SCREW PRESS (STUDI KASUS : PT. PERKEBUNAN NUSANTARA XIII) Shiddiq Kurniawan; Qomariyatus Sholihah
JTAM ROTARY Vol 1, No 1 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i1.1403

Abstract

The machine is one of the main factors of production whose role is very important in order to produce a product that conforms to the specifications set by a machine, with the amount and capacity of the machine's production. Reliability is the design of a component so that components can work according to function, without any failure, in accordance with the process already set. Screw press is a fitting machine used to squeeze moss brondolan ripe with press system and used to separate crude oil from crushed flesh (mesocarp) by squeezing. Research done on Screw Press machine that its role is quite high in PT. Perkebunan Nusantara XIII. The method used is Reliability with MTTR Method. From the calculation results obtained reliability value Screw Press engine in 2015 has the highest reliability value of 1.6408 at the time of calculation of 383.75 hours and in 2016 has a reliability value of 0.7239 at the time of calculation 415.83 hours. Screw Press engine reliability value in 2016 is higher than 2015, it is proven that the life of Screw Press engine in 2016 is more dominant than in 2015. The higher the reliability value the better the machine used in the operation process.  Keywords : Reliability, Weibull, MTTR, Machine Screw Prees
ANALISA KEGAGALAN KOMPONEN DRIVE PINION GEAR PADA SWING MOTOR EXCAVATOR CATERPILLAR 349D Andi Fatkurocman; Ach. Kusairi Samlawi
JTAM ROTARY Vol 2, No 1 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i1.2006

Abstract

Penelitian ini bertujuan untuk mengetahui alasan fraktur yang terjadi pada drive pinion gear unit motor swing Excavator Caterpillar 349 d. Dalam penelitian ini dilakukan beberapa tahapan yaitu pengamatan visual dan pengamatan makro, pengujian komposisi struktur logam, dan pemodelan load and latch menggunakan Autodesk Inventor 2014 sebelum mendapatkan hasil akhir. Hasil yang diperoleh dari penelitian ini adalah bahwa ada kurangnya presisi antara pinion drive dan planetary gear karena pin planet yang tidak dapat berfungsi sebagai pemegang planetary gear sehingga rotasi planet rentan terhadap tabrakan sebagai pemicu yang mengakibatkan cacat. Pada proses analisis tegangan menggunakan software autodesk inventor 2014 versi mahasiswa, hasil analisis nilai von misses adalah 9,798 Mpa jauh lebih kecil dari batas elastisitas material 790 MPa sehingga faktor pembebanan tidak menyebabkan sebuah kesalahan. This research is purpose to knowing the reason of the fracture that happen in drive pinion gear of the swing motor unit Excavator Caterpillar 349 d. In this research is doing  by several stage it is visual observation and macro observation, testing of metal structure composition, and load and latch modeling using Autodesk Inventor 2014 before getting the final result. The results obtained from this study are that there is a lack of precision between drive pinion gear and planetary gear due to planetary pins that cannot function as planetary gear holders so that planetary rotations are prone to hilarious triggering collisions resulting in defects. In the process of stress analysis using the student version of autodesk inventor 2014 software, the results of the analysis of the value of von misses is 9.798 Mpa are much smaller than the limit of material elasticity of 790 MPa so that the loading factor does not cause a fault.
ANALISIS KINERJA AIR HEATER DI PLTU ASAM-ASAM UNIT 2 Irawan Irawan; Aqli Mursadin
JTAM ROTARY Vol 1, No 1 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i1.1396

Abstract

Indonesia as one of the largest coal producers utilizes this advantage by establishing a steam power plant, one of which is Borneo south PLTU power plant PT.PLN (persero) south of Borneo and Central Borneo Asam-Asam generation sector. One important component of PLTU is air heater to raise the combustion air temperature. Initial heating of ljungstrom type lattest regenerative air  heater in PLTU Asam-Asam unit 2 is carried out cleaning and maintenance on seal and gas side surfaces to optimize heat transfer coefficient and ratio of air intake ratio exposed by forced draft fan and air heated by flue gas in heater air heater elements and transferred to the combustion chamber to make efficient use of new fuel. Measurements were carried out on August 9, 2017 for 2 hours to find out the average value of heat transfer coefficient and temperature comparison of entry and exit from air heater of Asam-Asam unit 2 steam power plant. This research was conducted to find out the value of heat transfer coefficient and air temperature ratio with measurement on the inlet and outlet for two hours. The results of the air heater performance analysis in in PLTU Asam-Asam unit 2 steam power plant in terms of the highest heat transfer coefficient was 62.75 W/m^2.℃ at 2:04 PM, while the lowest heat transfer coefficient was 62.37 W/m^2.℃ at 3:10 PM, and the average heat transfer coefficient is 62.50 W/m^2.℃ . While the highest water heater ratio 9.70 at 3:44 PM and the lowest ratio 8.32 at minute 3:09 PM, and the average water heater ratio 9.01. Heater water heater elements in good condition and performance in receiving and releasing heat. Keywords: Air Heater,  Heat Transfer Coefficient, Temperature Ratio,  Heating  Elements
PERANCANGAN ULANG TATA LETAK FASILITAS DALAM MENINGKATKAN EFEKTIVITAS PRODUKSI (STUDI OBSERVASI PT. KALIMANTAN CONCRETE ENGGINERRING) Rakhmat Fauzy; Qomariyatus Sholihah
JTAM ROTARY Vol 1, No 2 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i2.1741

Abstract

Industry is an economic activity that processes raw materials, raw materials, semi-finished goods or finished goods into high-quality goods in use, including engineering and engineering activities. Thus, industry is part of the production process. Industrial materials are taken directly or indirectly, then processed, resulting in more valuable goods for the community. In an industry not only concerns how much investment should be invested, production procedures and marketing of products but also requires the planning of facilities that include the location planning facility and facility design. Facility design includes facility system design, factory layout and material handling system (material transfer). (Wikipedia Bahasa Indonesia). In its current development PT. Kalimantan Concrete Engineering extends production land by purchasing a plot of land adjacent to the current production site, but it has not been enabled yet, in addition to the placement of U-dith and Box Culvert production which have not been placed in accordance with its area in the current name still in place at road front office and other areas that are still far apart. In accordance with the above explanation, we can know that the importance of an effective and efficient facility layout planning where it is in need in material handling arrangements, time efficiency, and the flow of work mobility. So this research is expected to be able to provide trobosan in the relationship layout facilities and improve the effectiveness of work better. Keywords: PT. Kalimantan Concrete Engineering, ARC, MHPS, Efektivitas

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