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ROTOR: JURNAL ILMIAH TEKNIK MESIN

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Published by Universitas Jember

ISSN : 1979018x EISSN : 24600385 DOI : -

Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 333 Documents

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PENGARUH BAYANGAN TERHADAP OUTPUT TEGANGAN DAN KUAT ARUS PADA PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) Hattu P D Edwin; Wabang A Jhon; Tuati Ambros; Palinggi Aris
ROTOR Vol 11 No 2 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Electrical energy is a very important requirement for the community, along with the development of the era and technological advances that are urgently needed, the need for electrical energy is very large, while the source of electricity that is currently being used still uses energy derived from fossil fuels. As we know that the source of energy derived from fossils is very limited, therefore other energy sources are sought or we are more familiar with renewable energy, one of which is the energy source that comes from the sun, which is better known as solar cell. The electricity from this solar cell is very dependent on sunlight which must illuminate the solar panels so that solar energy can be converted into electrical energy. The output from these solar panels is in the form of voltage and electric current. Some factors that can affect the amount of output or output voltage of electric current in PLTS is, temperature, shadow, (cloud condition, and surrounding environment), and wind speed. Therefore, the purpose of this research is to find out how much the shadow effect on the output voltage and electric current produced by PLTS. It is expected that this research can increase the knowledge of energy derived from the sun in this case the solar cell and know the effect of the shadow on the output voltage and electric current from solar panels.The results showed that there was a shadow effect on voltage reduction and current strength in the PLTS system, namely the 10% shadow area and 12.44 volt DC solar panel current and 2.54 amperage, 100% area covering the voltage output panel and the current of solar panels 12.10 volt DC and 0.22 amperage. The area of the shadow that covers the solar panel affects the output voltage and the strong current of the battery that is the area of the shadow 10% voltage and strong current battery 12.35 volt DC and 18.54 amper, 100% area cover the output panel voltage and strong current battery 11.90 volt DC and 13.85 amperes The shadow area covering the solar panels influences the output voltage and current strength of the inverter, namely the area of the shadow 10% voltage and 226.4 volt AC inverter current and 0.97 amperage, 100% covering the output voltage panel and 220.2 volt AC and 0.66 amperage current. Keywords: Electrical energy, Solar cell, Shadow (cloud condition)

PENGARUH KONSENTRASI INHIBITOR UBI UNGU TERHADAP LAJU KOROSI BAJA KARBON A53 DENGAN MEDIA AIR LAUT Ridho Unggul Nur Rahmadi; Imam Sholahuddin; Dwi Djumhariyanto
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Corrosion is a form of damage that occurs in metals. The main factor is the cause of the corrosion environment. A53 steel is a type of low carbon steel and a steel material types that are widely used for pipe applications. The use of a corrosion inhibitor is one way of preventing corrosion. Anthocyanin substances contained in purple yam can be made in a natural inhibitor, because the substance is an antioxidant anthocyanin which is an oxidation inhibitor. Variables used were varied concentration of 0 ppm, 2000 ppm, 4000 ppm and 6000 ppm. This study aims to determine the rate of corrosion, purpel sweet potato extract efficiencies and changes in microstructure. The method used in this study is experimental, inhibitor efficiency analysis, ANOVA test and analysis micro photo. The results showed that the material is corroded by pitting corrosion and uniform shape. Values on concentration lowest corrosion rate of 0.0044 mmpy 6000 ppm and 6000 ppm at the highest efficiency of 72.70%. Keywords: anthocyanin, steel A53, natural inhibitor, purple sweet potato.

SIMULASI PENGARUH STEAM-TO-CARBON RATIO DAN TUBE OUTLET TEMPERATURE TERHADAP REAKSI STEAM REFORMING PADA PRIMARY REFORMER DI PABRIK AMONIAK Muhammad Natsir Hakiki; Muslikhin Hidayat; Sutijan Sutijan
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Steam reforming, the reaction in Ammonia plant between natural gas and H2O becoming H2 and CO/CO2, is occurred in Primary Reformer and being completed in Secondary Reformer. In Primary Reformer, the reaction commonly occurred at 450-800oC and 36 bars. The endothermic reaction occurred in Ni-based catalyst inside the tube. The heat for this reaction came from the heat of reaction of combustion in the furnace (outer-tube). The flow of H2 will increase along with the increasing flow of the feed gas and the heat transferred from outer-tube to inner-tube. In the other side, there will be energy increasing. So there’s a need of optimization. The need of energy influenced by many parameters e.g. Steam-to-Carbon Ratio (S/C) and Tube Outlet Temperature (Tout) of Primary Reformer. Commonly S/C is 3.20 and maximum Tout is 800oC. That’s why; optimization was conducted by energy calculation at various S/C and Tout. Firstly, reaction and heat transfer in inner-tube and outer-tube were modeled, so we can get the data of temperature and gas composition outlet inner-tube. Then, energy consumption which came from process gas, fuel gas and steam generation was calculated. The range of S/C 2.70-3.70 and Tout 700oC-800oC were chosen for the simulation. The simulation result shown that the need of energy per kmol-H2 outlet Primary Reformer at S/C 3.20 and Tout 800oC was 573.11 MJ/kmol-H2. The need of energy per kmol-H2 outlet Primary Reformer at S/C 3.50 and Tout 780oC (20oC below common Tout) was 573.01 MJ/kmol-H2. It means that decreasing Tout (for tube lifetime increasing) must be compensated with increasing S/C. Keywords: Primary Reformer, Steam to Carbon Ratio, Tube Outlet Temperature

EFISIENSI MESIN PEMBAKARAN DAN KINERJA SISTEM PEMANASAN BAHAN BAKAR MELALUI SISTEM PIPA KNALPOT Azamataufiq Budiprasojo; Andik Irawan
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Exhaust Pipe Preheated Fuel System (EP2FS) is a fuel heating system that utilizes wasted heat from the exhaust. Heating the fuel aims to increase the homogeneity of the mixture of fuel and air to improve the combustion process in the engine. Making EP2FS requires careful design and calculation because the temperature of the fuel must not exceed 60 oC so as not to evaporate. The design and estimation use the helical heat exchanger (theory of heat transfer). The system that is ready will be applied in motorized vehicles to be tested for combustion efficiency and performance. Keywords: Fuel Preheating, Engine Performance, Helical Heat Exchanger

PEMBUATAN GENTENG BERSERAT TANDAN KOSONG KELAPA SAWIT Tarkono Tarkono; Nandang Nandang
ROTOR Vol 11 No 2 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

The utilization of oil empty bunches palm (EFBP) is limited, while the supply of EFBP is abundant. The most utilization of EFBP is in agriculture, while EFBP fibers have the opportunity to be developed in the field of engineering, for example as a composite material reinforcement material. In the construction field, EFBP fibers can contribute as a mixture of substances for cement tile products. The purpose of adding fiber is to distribute the stress on fibrous cement roof tiles. With evenly distributed stress, the strength of the tile will be higher. The production process of EFBP fibrous cement board is carried out without combustion, with materials in the form of portland cement, marble powder, CaCo3 powder and EFBP fiber and water. Based on the mechanical test that the fibrous EFBP tile can still be applied as a roof, this is evidenced by the majority of its mechanical properties meeting SNI standards. However, fibrous EFBP roof tiles have a flame spread value of 61.5 which means that they still need to be repaired so that the tile is not flammable. Thus, EFBP fibers can be used as an alternative fiber cement tile in order to improve product quality.Keywords: cement tile , fibre, EFBP

PENGARUH LAMA WAKTU PENGGETARAN ULTRASONIC BATH TERHADAP SIFAT MEKANIK DAN MORFOLOGI PATAHAN BIOKOMPOSIT PATI TAPIOKA/SERAT RAMI (BOEHMERIA NIVEA) Mochamad Asrofi; Hairul Abral; Anwar Kasim; Adjar Pratoto; Herwin Gevin; Melbi Mahardika
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

This study reported about mechanical properties and fracture surface of ramie fiber reinforced tapioca starch based biocomposites. The amount of fibers in matrix was kept constant at 10% from dry weight starch basis. Fabrication of biocomposites was solution casting. The effect of vibration duration from ultrasonic bath was 0, 15, 30, and 45 min. This treatment was applied to biocomposites while gelatinized. Tensile test was carried out to determine the mechanical properties of biocomposites. Fracture surface of biocomposites after tensile test was observed by using scanning electron microscopy (SEM). The result shows that, tensile strength increased when vibration time was added. The maximum tensile strength was obtained at 45 min vibration time with 2,84 MPa. This phenomenon was supported by SEM observation which indicate compact structure. Keywords: Tapioca starch, ramie fiber, biocomposites, mechanical properties, SEM

ANALISA TRANSPORTASI PALM OIL MILL EFFLUENT DARI PABRIK KELAPA SAWIT KE PEMBANGKIT LISTRIK TENAGA BIOGAS DI RIAU Ardhi wahyu Eka; Hasan Iqbal Nur; Khumaidah Nur
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

The delivery of Palm Oil Mill Effluent (POME) by the Palm Oil Mill (POM) of Tanah Putih (60,000 tons / year) and POM Sei Buatan (30,000 tons / year) through the river ship represents 78% of POME's total supply requirement for Biogas Power Plant (BPP) Tandun, Riau. How to get recommendations on routes, ship types and most optimum ship sizes is important. The optimization is done by analyzing the transportation including the investment and then comparison between the modes with some alternative routes on the existing segment, the actual condition limitation and the minimum criterion of total cost. The result of analysis shows that for POME delivery the optimum route is port to port using 1 unit of SPOB vessel with 1,500 ton capacity for each segment. The optimum ship type is Self Propelled Oil Barge (SPOB) when compared to Self Propelled Container Barge (SPCB) and Landing Craft Tank (LCT) and Tank Truck with 8 ton capacity. The total cost for ship procurement is Rp 8,035 billion. The amount of POME delivered can generate 9 million kWh of electrical power. Total revenues from electricity sales and electricity cost savings of the factory amounted to Rp 8.774 billion, resulting in a gross profit of Rp 739 million Keywords: Transportation Analysis, Palm Oil Mill Effluent, Biogas Power Plant

KARAKTERISTIK KECEPATAN NYALA DAN KONSENTRASI ION PADA PEMBAKARAN PREMIXED BUTANA Muh Nurkoyim Kustanto
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Research on premixed butane combustion has been carried out, to determine the characteristics of flame velocity and ion concentration. The research was carried out by combining premixed butane mixture in a cylindrical combustion chamber measuring 108 mm in diameter and 170 mm in length. The premixed butane air mixture is set at the equivalent composition ratio  = 0.8; 0.9; 1.0; 1.1; 1,2. The results showed that the highest flame speed was equivalent to a ratio of 1.1, which was 198 cm / s whereas the highest radical concentration indicated by the voltage on the ion sensor system is equivalent to a ratio of 1.1, which is 5.5 volts. Keywords: butane, flame velocity, radical concentration, premixed combustion

PEMILIHAN KAPASITAS BATERAI PENYIMPAN ENERGI LISTRIK DARI ENERGI SURYA Irawan Bambang; Hadi Samsul; Darsin Mahros; Fatkhur Rohman
ROTOR Vol 11 No 2 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

This paper is concern on the using of some solar batteries for storing the energy from the solar panel. The battery used is a 100 WP solar cell with the appliances. Research was carried out in an open air with real condition without treatment for two months continuously during hot dry season in Malang city, Indonesia. It is concluded that emerged energy from the solar panel was 550 WH or equal to 12 V of 45 AH. During the electric charging from solar panel to the battery, the flowing current vary between 2 A to 6 A. The battery charging only started after 7 am when the voltage was above 12 V. For the solar panel 100 WP to use battery with the storage capacity above 40 AH. Keywords: battery, solar panel, energy

SIFAT MEKANIK DARI BIOKOMPOSIT FILM PATI UBI KAYU DENGAN PENGUAT SERAT AKAR BUAH NAGA (HYLOCEREUS POLYRHIZUS) Melbi Mahardika; Hairul Abral; Anwar Kasim; Syukri Arief; Mochamad Asrofi
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Dragon fruit root fiber used as a reinforcement in the biocomposites film of cassava starch. The production method of biocomposites film was solution casting. The cassava starch serves as the matrix in the biocomposites film. The variation of amount fiber in matrix was 2, 4 and 6% from dry starch weight basis. Isolation of dragon fruit root fiber used alkalization and bleaching process with NaOH, NaClO2 and CH3COOH, respectively. Glycerol was used as plasticizers. Mechanical properties of biocomposites was determined by tensile test. The result shows that, tensile strength increased 200% after the addition of 6% fiber compared to pure starch film. Tensile test data was supported by X-Ray Difraction (XRD). Keywords: Biocomposite, Cassava Starch, Dragon fruit root fiber, Mechanical properties, XRD.

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Nasrul Ilminnafik

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+628123290147

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Jl Kalimantan 37

Location
Kab. jember,

Jawa timur

INDONESIA