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Perum Graha Garuda Mas Blok II No. 39 Dusun V Desa Sigara-Gara Kecamatan Patumbak Kabupaten Deli Serdang Provinsi Sumatera Utara, Indonesia, Kode Pos: 20361.
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IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Published by CV. IRA PUBLISHING
ISSN : -     EISSN : 29624290     DOI : https://doi.org/10.56862/irajtma
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) fokus pada artikel ilmiah hasil penelitian dan review dalam bidang teknik mesin dan aplikasinya yang antara lain meliputi: 1. Konversi energi 2. Mekanika 3. Material 4. Manufaktur 5. Lain-lain yang relevan
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 157 Documents
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Rancang Bangun Mesin Steam Jet Mini Portable Power Spayer Akhmadi, Amin Nur; Fatkhurrozak, Faqih; Sanjaya, Firman Lukman
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.95

Abstract

This research discusses the mini portable power spayer steam jet machine by testing it with a flow meter to find out the specifications. This machine is designed to be easily moved from one place to another. This machine has a pump that can create high water pressure. This steam jet machine can be operated using a DC motor. This machine is usually built with materials that are resistant to corrosion and durable for long-term use. To create a mini portable power spayer steam jet machine that has a simple, cheap, easy to operate and maintain system, this machine must be designed so that easy to move from one place to another, both indoors and outdoors, must be able to produce water vapor at a high enough pressure to clean dirt, the design must consider safety aspects to protect users from injury or potential danger, by designing the machine mini portable power spayer pump with dimensions that match those on the market, realized with real and existing designs and products, by testing with a flow meter, the test was carried out with a spray result of 6 liters/minute according to specifications. Making a design for a mini portable power spayer steam engine pump with an inventor that is realized is the same as choosing a product on the market. The process of testing the mini portable power spayer steam machine with a flow meter measuring tool produces a water jet pressure of 6 liters/minute, when tested with a flow meter spayer gun in a straight water jet pressure position.
Analisis Efisiensi Thermal dan Konsumsi Bahan Bakar pada Burner Kompor SNI Sebagai Dasar Acuan Perencanaan Burner Mesin Stirling Lubis, Rahmadsyah; Jufrizal, Jufrizal; Supriatno, Supriatno; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.96

Abstract

This study aims to evaluate the performance of an LPG stove burner by assessing the flame temperature, fuel consumption, burner power, and thermal efficiency. The method employed is an experimental approach using a water boiling technique. The test materials used include 3 kg of LPG gas and water. The equipment utilized includes an SNI-compliant cooking stove, a pot, a digital scale, a rotameter flow meter, a gas regulator and hose, a stopwatch, a UT320D thermometer controller, an NPT stainless steel thermometer, and thermocouple sensor cables. The results show that during the first test with the stove set to the minimum setting, the average flame temperature at the burner reached 559.005 °C, with a maximum value of 589.2 °C. In the second test, with the stove set to the maximum setting, the average flame temperature reached 714.78 °C, with a maximum value of 769.3 °C. Fuel consumption was recorded at 0.391 kg in the first test and 0.545 kg in the second test. The burner power output was 1.754 kW in the first test and 2.225 kW in the second test. The thermal efficiency of the burner was recorded at 50.07% in the first test, increasing to 52.85% in the second test. The measurement and analysis of thermal efficiency and fuel consumption in this study can serve as a crucial guide in designing and developing burners for Stirling engines.
Rancang Bangun Sistem Pengangkat Pada Forklift Mini Dengan Kapasitas Angkat Maksimum 150 Kg Oktavian, Halvian; Malik, Yulianti; Darmadi, Herry; Kurnia, Dian
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.98

Abstract

Forklifts are one solution to this problem. Material to be lifted This mini forklift is limited to a maximum weight of 150 kg. Therefore, equipment The lifter is designed in such a way that it is able to withstand the maximum load at the time operated. In the lifting system on this mini forklift, a 12 volt battery is used provides supply to the linear actuator where the linear actuator will move or control system mechanism. In this study, a tool was used to control outward movement The entry actuator is a push button. Based on the results that have been obtained starting from planning to testing, obtained stable forklift results during lifting and carries loads with a maximum lifting capacity of 150 kg and a lifting height of 140 cm.
Optimalisasi Pengecekan dan Perbaikan dengan Penentuan Ukuran Utama Penutup Bawah pada Tangki Timbun di PT. KPBN Belawan Silalahi, Krisanto; Tarigan, Nurlianna
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.99

Abstract

PT. KPBN Belawan is a company branch entrusted as an agent for buying and selling CPO (Crude Palm Oil). PT. KPBN Belawan operates a tank storage unit that temporarily stores CPO before selling it to customers. Regular inspections are necessary for the storage tanks, such as checking the thickness of the tank plates and ensuring the strength of the locking mechanisms on the shell central hole to prevent leaks during filling. This research aims to calculate the dimensions of the bottom cover of the storage tank (central hole), which serves as a seal for the CPO in a storage tank with a capacity of 5,000 liters. The calculated dimensions for the shell central hole are as follows: the nominal diameter of the shell maintenance hole bolts is 17.5 mm, the flange width is 40.25 mm, the outer diameter of the flange shell maintenance hole is 913.6 mm, the bolt circle diameter of the flange shell central hole is 887 mm, the inner diameter of the flange shell central hole is 869.5 mm, the number of bolts is 24, the flange thickness is 18 mm, and the bolt spacing of the flange shell mainhole is 115.77 mm.
Studi Eksperimental Densitas dan Bilangan Iodin Biodiesel Di Produksi Dari Minyak Goreng Limbah Sitinjak, Sapriadi; Idris, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.100

Abstract

This research aims to determine the effect of varying reaction times (60, 70, 80, 90, and 100 minutes) at a temperature of 65℃ and a rotation speed of 1050 rpm on the density and iodine number of biodiesel. The raw material used for biodiesel production is waste cooking oil. This study employs esterification and transesterification processes by reacting catalysts with methanol mixed with waste cooking oil. The catalyst concentration variations used in this study are methanol at a ratio of 1:2 and 0.5% NaOH of the total waste cooking oil. The transesterification product is then settled for approximately 10 minutes. The resulting biodiesel and glycerol are separated, after which the biodiesel is washed with distilled water at 50℃ and evaporated at 90-100℃. The density test results for the catalyst concentration of methanol at 1:2 and 0.5% NaOH showed values of 858.5 kg/m³ for reaction times of 60, 70, and 80 minutes, 858.7 kg/m³ for 90 minutes, and 858.4 kg/m³ for 100 minutes. The iodine number test results showed values of 87.2 for 60 minutes, 88.3 for 70 minutes, 90.2 for 80 minutes, 92.3 for 90 minutes, and 82.3 for 100 minutes. The research findings indicate that the obtained density and iodine number meet biodiesel quality standards and are suitable for use according to ESDM regulations.
Studi Eksperimental Titik Nyala dan Viskositas Biodiesel Diproduksi dari Minyak Goreng Bekas Hussein, Muhammad; Idris, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.101

Abstract

Biodiesel is a potential alternative to replace diesel because its raw materials are renewable and environmentally friendly. One of the raw materials used is waste cooking oil. The high content of free fatty acids in waste cooking oil requires pretreatment in the form of esterification before the transesterification process. This study aims to determine the effect of reaction time variations (60, 70, 80, 90, and 100 minutes) at a temperature of 60°C and a stirring speed of 1050 rpm on biodiesel's flash point and viscosity. The biodiesel production process was carried out in two stages: esterification and transesterification. The catalyst concentration was methanol at a 1:2 ratio and NaOH at 0.5% of the waste cooking oil. After transesterification, the mixture was allowed to settle for 20 minutes. The produced biodiesel was washed with distilled water at 50°C and evaporated at 90-100°C. The flash point test results for the reaction time variations showed the following values: 60 minutes (108.5), 70 minutes (182.5), 80 minutes (182.5), 90 minutes (148.5), and 100 minutes (184.5). The results indicated that the cetane number obtained did not meet the biodiesel quality standards and was not yet suitable for use according to the Ministry of Energy and Mineral Resources (ESDM) regulations.
Studi Eksperimental Angka Setana Diproduksi dari Minyak Goreng Bekas Chairul Fahmi, Muhamamad; Idris, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.102

Abstract

Biodiesel is a potential alternative to replace diesel due to its renewable and environmentally friendly raw materials. Used cooking oil can be utilized as a feedstock for biodiesel; however, the high free fatty acid content requires pretreatment with esterification before transesterification. This study aims to determine the effect of reaction time variation (60, 70, 80, 90, 100 minutes) on the cetane number of biodiesel produced at 60°C and a speed of 1050 rpm. The esterification and transesterification processes use 0.5% NaOH catalyst and methanol in a 1:2 ratio, mixed with used cooking oil. After transesterification, the mixture is settled for 20 minutes, then the biodiesel is separated and washed with distilled water at 50°C and evaporated at 90-100°C. The cetane number test results are as follows: 60 minutes (44.54), 70 minutes (44.54), 80 minutes (44.54), 90 minutes (44.47), and 100 minutes (44.60). This study shows that the cetane number of the produced biodiesel does not meet the biodiesel quality standards and is not yet suitable for use by the Ministry of Energy and Mineral Resources (ESDM).
Perancangan Mesin Peniris Minyak Bawang Goreng Otomatis Marojahan Hutasoit, Alex; Hermanto, Tino; Fahrul Sinurat, Ryan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.103

Abstract

Shallots are one of the horticultural commodities with great potential and should be developed into high-quality products. One of the processed products from shallots is fried shallots, which are used to enhance the flavor of food. Fried shallots are a sought-after culinary product, particularly among homemakers, snack bar owners, and others. The aim of this research is to design an automatic fried shallot oil draining machine for home industry scale. This research method utilizes AutoCAD software for design planning. The results of this design show that the required electric motor power is 0.85 Hp, the motor pulley and drive shaft pulley ratio is 1:2, with the motor pulley being 60 mm and the drive shaft pulley 120 mm, the shaft diameter is 30 mm, and the oil draining drum diameter is 580 mm with a height of 590 mm, using stainless steel material. The design yields a draining machine capable of continuous operation with the planned production capacity.
Analisa Gaya dan Koefisien Gesek Ban Berdasarkan Perbedaan Massa Mobil Terhadap Permukaan Jalan Aspal Pasaribu, Muhamamd Nuh Hudawi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 1 (2024): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i1.105

Abstract

In general, roads consist of asphalt road surfaces and concrete road surfaces which have different surface textures. Of the two roads, asphalt roads are generally longer or more frequently traveled than concrete roads. Asphalt roads have a smooth rough texture. The texture of road surface roughness (IRI) will have an impact on safety and comfort such as the friction coefficient of vehicle tires when passing over rough road surfaces. Safety and comfort are influenced by IRI, mass, speed and type of tire used when in contact with the road surface texture. The aim of this research is to obtain the IRI value using the Naasra Roughness meter ARRB, to obtain the magnitude of the force and coefficient of friction applied on the Abdul Haris Nasution road Medan which has an asphalt road length of 3200 meters with an experimental method using a 2010 Toyota Yaris at a speed of 10 km/hour to 45 km/hour. From the results of experimental research, an IRI value of 6.4 was obtained. The faster the vehicle/car passes, the smaller the force value and friction coefficient value can be at an initial speed of 10 km/hour.
Pengaruh Suhu Dan Kelembapan Terhadap Denyut Nadi Operator Kamar Mesin Di Pabrik Kelapa Sawit PT XYZ Mahyunis, Mahyunis; Raja, Padamulia; Lubis, M Fahmi Fatan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.106

Abstract

A palm oil mill has several workstations involved in processing palm oil into Crude Palm Oil (CPO). According to the Indonesian Minister of Manpower Decree No. 5 of 2018, the ideal temperature in industrial work areas is 23-26˚C. This study aims to measure the temperature and humidity in the engine room, as well as the operators' pulse rates during rest and work, using a quantitative method. Measurements were taken at 09:00, 12:00, and 15:00 at four observation points. The results showed that the highest temperature reached 32.75˚C, exceeding the standard limit, with an average humidity of >80%, also surpassing the industrial standard (40-60%). These conditions indicate the need for improved ventilation and the use of devices such as exhaust fans and dehumidifiers to reduce temperature and humidity. The installation of real-time temperature and humidity control devices is proposed to enhance working conditions in the engine room.

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