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All Journal Prosiding Semnastek Jurnal Dinamika Penelitian Industri JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Ilmiah Teknik Mesin "MEKANIK" Mechanical Engineering for Society and Industry IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Aceh International Journal of Science and Technology IRA Jurnal Pengabdian Kepada Masyarakat

Jufrizal Jufrizal

Universitas Medan Area

Author-ID : 5381717

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

Published : 39 Documents Claim Missing Document

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Pemodelan Numerik Perpindahan Panas pada Dinding Ruang Bakar Boiler Menggunakan Software Engineering Joel Davidson Hasibuan; Jufrizal Jufrizal
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 2 (2023): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i2.47

This study discusses the heat transfer on the combustion chamber walls by simulation using Ansys software. The main purpose of doing this simulation is to find out the magnitude of the temperature in each layer of objects that cannot be measured with a measuring instrument. analysis in Steady-state Thermal conditions using the highest working temperature parameter. 3-dimensional combustion chamber geometry conditions with a 2-meter combustion chamber wall height. This study focuses on one side of the combustion chamber wall for analysis. The results provide the same understanding as the other side of the wall. Based on the calculation, the total heat transfer is obtained 919,09W. Theoretical/experimental temperature distribution analysis and numerical simulations produce small comparison values (percentage error below 10%). Simulated heat energy flow rate (Heat Flux) 1680,7W/m2 and the theoretical yield is equal to 1372,18W/m2. Future research is expected to analyze air flow and combustion under transient thermal conditions to determine the effect of time and temperature on the temperature distribution in the combustion chamber.

Pengaruh Variasi Temperatur Sumber Panas Terhadap Temperatur Udara Dalam Heater Mesin Stirling Siregar, Zufri Hasrudy; Jufrizal; Hasanah, Moraida; Muhammad Dendy Agusdiandy
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

This research is focused on testing the heat transfer rate from the heat source to the Stirling engine heater. The test was carried out on the Stirling engine heater as a cylindrical tube. This study aims to determine the effect of variations in the heat source's temperature on the heater's air temperature. This test was carried out on a Stirling engine with a gamma-type mechanical configuration. The heat source temperature varied in 3 categories, namely between 860-900℃ (I), 780-850℃ (II), and 710-779℃ (III). there were 3 temperature positions measured, namely the temperature of the heat source, the temperature of the outer wall of the heater, and the temperature of the air in the heater. The fuel used for the heat source is liquefied petroleum gas (LPG). The research results for the heat source temperature in categories I, II, and III resulted in the average temperature on the outside heater wall being 729.8°C, 659.6°C, and 591.3°C, respectively. While the average air temperature in the heater for categories I, II, and III, respectively, is 201.7°C, 130.1°C, and 114.8°C. The 3 variations of heat source temperature show that the given heat source temperature value is very influential and directly proportional to the temperature inside the heater.

Uji Kinerja Burner LPG Mesin Stirling dengan Variasi Kosumsi Bahan Bakar Mawardi; Jufrizal; Hidayah, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

This study focuses on testing the ability of the LPG burner used in the Stirling engine. The LPG burner combines the fuel flow rate, air flow rate, and flame to produce combustion. This test uses a modified burner and is analyzed by the water boiling test method. The study aimed to determine the thermal efficiency, fuel flow rate, and burner power of the Stirling engine LPG with variations in fuel consumption. Variations in the flow rate of LPG fuel are carried out using a conventional LPG gas burner and turning device with the minimum, medium, and maximum settings. The results showed that the three variations of the mass flow rate of fuel at the minimum conditions had higher efficiency and low fuel consumption, but the burner power produced was very low; namely, 1,714 kW, compared to the medium and maximum requirements. The thermal efficiency parameter value at the minimum condition is 49.91%, and fuel consumption is 0.000036 kg/second or equivalent to 1296 grams/hour. The maximum burner power produced during the test was 4,487 kW.

Uji Kinerja Burner LPG Mesin Stirling dengan Variasi Tekanan Bahan Bakar Jufrizal, Jufrizal; Mawardi, Mawardi; Ramadhan, Fandy
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 2 (2022): Agustus
Publisher : CV. IRA PUBLISHING

This paper is the result of initial research on the development of an LPG burner planned for the Gamma-type Stirling engine. The purpose of this study was to determine the effect of variations in fuel pressure on flame temperature and mass flow rate of fuel in LPG burners. This research method was carried out experimentally by varying the fuel inlet pressure on the regulator to the LPG burner from high to low. The LPG fuel used is 3 kg LPG produced by PT Pertamina (Persero). The pressure drop in the LPG gas tanks was varied and observed in a range of values between 20-17.5 kg/cm2, 15-12.5 kg/cm2, and 10-7.5 kg/cm2. In testing 20-17.5 kg/cm2, 15-12.5 kg/cm2, and 10-7.5 kg/cm2 the average fire temperature is 724.6°C, and 743.6°C respectively. , 631.4°C. Meanwhile, the mass flow rate of the fuel according to the order of pressure variations was 0.131 kg, 0.264 kg, and 0.162 kg respectively for 1 hour of testing. The temperature and mass flow rate of the fuel produced will be the basis for consideration in the Stirling engine design.

Uji Kinerja Burner Gas LPG Mesin Stirling dengan Variasi Laju Aliran Udara Jufrizal, Jufrizal; Siregar, Zufri Hasrudy; Saktisahdan, Tengku Jukdin; Putra, Bintang Kelana; Syahputra, Muhammad Novrin Rizky
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 2 (2022): Agustus
Publisher : CV. IRA PUBLISHING

A burner is a tool used to heat the heater as a source of initial heat whose heat functions to drive the Stirling engine. The burner used in this test is self-designed. The purpose of this study was to determine the temperature profile, fuel consumption used, power on the burner, and the efficiency of the Stirling engine burner with variations in air flow rates. Variations in the airflow rate used in this study were 2 m/s, 2.5 m/s, and 3 m/s. This research method was carried out experimentally and analyzed by the water boiling test method. The results of the three variations of air flow rate show that the highest temperature occurs in the Stirling engine burner with an airflow rate of 3 m/s of 813,815℃, for fuel consumption with variations in air flow rate of 343 gr, Stirling engine burner power with variations in air flow rate 2 m/s, 2.5 m/s, and 3 m/s produce the same power of 4.48 kW, and the highest efficiency on the Stirling engine burner is obtained at an airflow rate of 3 m/s of 38.33%.

Uji Potensi Limbah Panas dari Kompor Gas Satu dan Dua Tungku yang Dibuang ke Lingkungan Jufrizal, Jufrizal; Napitupulu, Farel H.; Abdullah, Ilmi; Ambarita, Himsar; Tarigan, Dicky Adrian Sera
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 2 (2022): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v1i2.20

This research aims to measure the temperature around the burner of a single and two-burner SNI gas stove experimentally. The method involves installing temperature sensors at various points around the burner to measure the temperature distribution during stove operation. Testing one stove with the maximum gas stove setting shows that the temperature of the flame (Tf), inner wall (Ti), and outer wall (To) has an average value of 515.7426°C, 159.4874°C, and 123 respectively. .9852°C. With the minimum gas stove setting, the average values of Tf, Ti, and To are 412.9672°C, 101.7448°C, and 64.1360°C. For testing two stoves with the maximum gas stove setting, the average values of Tf, Ti, and To were 666.9459°C, 146.0443°C, and 81.8967°C respectively, while for the minimum gas stove setting, The average values of Tf, Ti, and To are 596.623°C, 94.6196°C, and 60.9590°C. The results of this measurement indicate that the heat lost to the environment through radiation is still significant, as can be seen from the high temperatures measured on the inner and outer walls of the plate around the burner. These findings are important for improving the design of gas stoves to increase energy efficiency and reduce heat lost to the environment.

Pelatihan Proses Milling Bagi Mahasiswa di Growth Centre LLDIKTI Wilayah - I Jufrizal, Jufrizal; Hermanto, Tino; Riadi, Selamat; Marwan, Marwan
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 1 No 1 (2023): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v1i1.49

The milling process is one of the essential techniques in the manufacturing industry used to produce components using milling machines. For engineering or manufacturing science students, understanding the milling process is relevant and valuable. The milling process is commonly used in various industrial sectors, including automotive, aircraft, energy, etc. Understanding the basic principles and techniques of the milling process will provide a solid foundation for students to develop careers in these various industries. The milling process involves the use of a milling machine. Students skilled in operating these machines will have a competitive advantage in the world of work. They will be able to contribute to product development, tool design, and efficient manufacturing processes. Students will learn how to read and understand technical drawings, choose the right cutting tools, as well as workpiece measurement techniques prior to the milling process. This capability will broaden their understanding of product engineering and design. The results of the training showed that almost all students were able to perform basic techniques in the milling process, as evidenced by their ability to produce products according to the technical drawings provided.

Analisis Potensi Energi Angin Menggunakan Turbin Horizontal di Kawasan Wisata Mangrove Desa Tanjung Rejo, Kecamatan Percut Sei Tuan Idris, Muhammad; Zulfikar, Achmad Jusuf; Darianto, Darianto; Iswandi, Iswandi; Jufrizal, Jufrizal; Hermanto, Tino; Haniza, Haniza; Harahap, Uun Novalia
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 2 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v2i2.125

The tridharma of higher education is the main task and function for every lecturer that must be carried out every semester. One of the activities of the tridharma of higher education is community service which aims to make a scientific contribution owned by each lecturer. On this occasion, the UMA mechanical engineering study program had the opportunity to carry it out in Tanjung Rejo village, Percut Sei District. The master who owns the mangrove forest tourist attraction. The tourist attraction is located on the coast of the Strait of Malacca, where geographically it has the potential for renewable energy, namely wind energy. Based on the measurement data, the average wind speed was obtained 2 m/s. From the potential power that can be generated through a horizontal type wind turbine theoretically 59.8 W. Actually, this turbine has an average power of 20.9 W. This difference occurs due to an efficiency factor of 35%. The potential of wind energy in Tanjung Rejo Tourism Village is very promising for development. This effort will not only increase the energy independence of the village, but also reduce carbon emissions and preserve the environment.

Pengaruh Penambahan Regenerator Terhadap Performansi Mesin Stirling Tipe Gamma Siregar, Zufri Hasrudy; Jufrizal, Jufrizal; Putra, Bintang Kelana
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Mesin stirling merupakan mesin pembakaran luar dan menggunakan prinsip regeneratif siklus tertutup. Regenerator mesin Stirling berada di antara pemanas dan pendingin yang terdiri dari matriks. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan regenerator terhadap performansi mesin stirling tipe gamma. Metode penelitian ini dilakukan secara eksperimental yaitu dengan mengamati performansi sebelum menggunakan regenerator dan sesudah menggunakan regenerator. Hasil penelitian sebelum menggunakan regenerator diperoleh selisi temperatur maksimum 95,1 ℃, dan rata-rata putaran mencapai 235,6 rpm, menghasilkan torsi tertinggi 0,624 Nm, daya tertinggi 16,430 Watt, dan efisiensi tertinggi sebesar 73,2 %. Sedangkan menggunakan regenerator diperoleh selisi temperatur maksimum 64,5 ℃, dan rata-rata putaran mencapai 153,6 rpm, menghasilkan torsi tertinggi 0,38 N.m, daya tertinggi 6,236 Watt, dan efisiensi tertinggi sebesar 68,4 %. Penambahan regenerator pada mesin Stirling menyebabkan penurunan performansi, ini dimungkinkan karena terjadi penurunan tekanan fluida didalam mesin karena mesin Stirling mCHPSE-012020 masih menggunakan tekanan atmosfir sebagai tekanan kerja.

Mapping the landscape of WCO biolubricant studies: A Comprehensive bibliometric review with vosviewer Ilmi, Ilmi; Suherman, Suherman; Frida, Erna; Binti Mohd Zulkifli, Nurin Wahidah; Jufrizal, Jufrizal
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12549

This study explores the growing field of biolubricants as sustainable alternatives to petroleum-based lubricants. This paper highlights the gap in the current literature regarding biolubricants from Waste Cooking Oil (WCO) using a mixed-methods approach of bibliometric analysis and systematic literature review (SLR). A bibliometric analysis was conducted using data from the Scopus database, covering 650 publications from 2000 to 2024. Furthermore, a systematic literature review provides a comprehensive analysis of the methods used for synthesizing biolubricants from WCO, particularly evaluating the types of catalysts and methods employed that influence the physicochemical properties. The findings show a significant increase in research activity from 2018 to 2022, with Malaysia and India leading in this area. Key research trends identified include catalysts, oxidation stability, and transesterification processes. Optimal conditions for biolubricant production from WCO were achieved using an Amberlyst catalyst at 81°C, yielding a 99% conversion rate. These results highlight the potential of WCO-derived biolubricants to support more sustainable industrial applications. This study is the first to combine bibliometric analysis and systematic literature review methods to provide a comprehensive overview of research on WCO-based biolubricant production. Through a systematic review of existing studies, this research provides a useful resource for industry professionals and renewable energy policymakers in their efforts.

Co-Authors . Zainuddin Abdullah, Ilmi Abdullah, Ilmi Achmad Jusuf Zulfikar Adinda Juwita Nasution Ahmadi, Doni Aldi Kurniawan Andhika Ariyudha Barita Barita Barita, Barita Binti Mohd Zulkifli, Nurin Wahidah Bobby Umroh Darianto Darianto Darianto, Darianto Darwin, Felix David Jomantes Munthe Edwin Harianto Sipahutar Eli Simanjuntak Erna Frida Eswanto Eswanto Eswanto Is Eswanto, Eswanto Eva Riana Br Bangun Farel H. Napitupulu Farel H. Napitupulu Hamdani Hamdani Haniza Hapzi Ali Harahap, Uun Novalia Harry Parulian Limbong Hasanuddin Hasanuddin Hidayah, Muhammad Himsar Ambarita Hotman Ginting Husri Zarmawan Ilmi Abdullah Ilmi Ilmi Ilmi Ilmi, Ilmi Indra Hermawan INDRA HERMAWAN Indra Prasetio Irfandi Irfandi, Irfandi Irvan Hendrawan Surya Dinata Iswandi Iswandi Iswandi Iswandi Jimy Lingga Joel Davidson Hasibuan Joel Hasoloan Simatupang Jos Susilo Kurnia Rizky Nasution Mahyunis Marwan Marwan Mawardi Moraida Hasanah Muhammad Dendy Agusdiandy Muhammad Idris Munajat Munajat Murahmad Parulian Marbun Nurdiana Nurdiana Nurdiana Nurhidayatullah Nurhidayatullah Putra, Bintang Kelana Rahmadsyah Lubis Ramadhan, Fandy Reynaldi Samosir Riana Puspita Rizkha Rida Saktisahdan, Tengku Jukdin Sari Farah Dina Selamat Riadi Siregar, Zufri Hasrudy Siti Masriani Rambe Suherman, Suherman Supriatno, Supriatno Sutrisno, Franky Syahputra, Muhammad Novrin Rizky Syukarni Ali Tarigan, Dicky Adrian Sera Tino Hermanto Uun Novalia Harahap Yoko Nikodemus Manik Yopan Rahmad Aldori zainuddin zainuddin Zainuddin, Zainuddin

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