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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" Jurnal Pengabdian Masyarakat Multidisiplin 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
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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Pengaruh Variasi Bukaan Katup terhadap Kinerja Sistem pada Konfigurasi Pompa Seri dan Paralel Munthe, David Jomantes; Lingga, Jimy; Jufrizal, Jufrizal; Idris, Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.185

Abstract

Centrifugal pumps are widely used in industry and civil engineering to move fluids by increasing pressure efficiently. This study analyzes the effect of valve opening variations on series and parallel pump configurations simultaneously using a laboratory experiment method with two repetitions. The results show that parallel pump configurations are generally more efficient than series, especially at 50% and 25% valve openings. The maximum efficiency is achieved at 75% valve opening with a value of around 33% for both configurations. Valve opening settings and pump configuration selection are very important to improve the performance and efficiency of pressure piping systems. It is recommended for small industries to use parallel pump configurations with optimal valve opening operations of around 75% for energy efficiency and cost savings. Developing an automatic valve opening control system is also recommended to maximize efficiency, extend equipment life, and optimize fluid distribution.
Penerapan Reaktor Biogas Skala Rumah Tangga dari Kotoran Domba sebagai Solusi Energi di Umroh Farm Idris, Muhammad; Umroh, Bobby; Jufrizal, Jufrizal; Hermawan, Indra; Harahap, Uun Novalia
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i1.174

Abstract

This Community Service activity addresses sheep manure waste issues at Umroh Farm, Patumbak Village, Deli Serdang. Waste buildup causes odor and environmental pollution despite its potential as biogas material. The solution was implementing appropriate technology by constructing a household-scale biogas reactor. Activities included participatory training, equipment assembly, and field trials. The digester, with a ±200-liter capacity, was made from plastic drums and equipped with input-output, cleaning, and gas collection lines. The implementation produced an average of 0.015 m³ of biogas per hour, with fire ignition lasting 1–2 seconds. The program reduced livestock waste, improved farmers’ awareness and skills and supported clean energy and climate change mitigation goals. Its success shows that simple biogas technology can provide an integrated solution for environmental management and community empowerment.
Analisis Efisiensi Termal Kompor Biomassa Tipe Gasifier Downdraft dengan Variasi Massa Campuran Arang Kayu dan Wood Pellet Simatupang, Joel Hasoloan; Jufrizal, Jufrizal; Supriatno, Supriatno
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.201

Abstract

This study analyzes the thermal efficiency of a downdraft gasifier-type biomass stove using various fuel masses of wood charcoal and wood pellets. The Water Boiling Test (WBT) method was applied with fuel masses of 0.5 kg, 0.75 kg, 1 kg, and 1.5 kg. Observed parameters included thermal efficiency, fuel consumption rate (FCR), power input, and power output. The highest thermal efficiency, 14%, was achieved with 1.5 kg of wood pellets, while charcoal showed a decrease in efficiency at 1 kg. FCR increased with charcoal but decreased with wood pellets, indicating better combustion efficiency. Power input and output increased with higher fuel mass. These findings highlight the importance of fuel type and mass optimization in improving biomass stove performance, thereby supporting Indonesia's transition to renewable energy.
Analisis Proksimat dan Nilai Kalor Biopelet Tandan Kosong Kelapa Sawit (TKKS) sebagai Sumber Energi Terbarukan Br Bangun, Eva Riana; Jufrizal, Jufrizal; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.205

Abstract

The palm oil industry in Indonesia generates a large amount of solid waste in the form of Empty Fruit Bunches (EFB). This waste is often underutilized and poses environmental challenges. The high lignocellulosic content of EFB offers significant potential for its development as a renewable biomass fuel. This study aims to evaluate the proximate composition and calorific value of EFB to assess its feasibility as a raw material for bio pellets. The experimental procedures included drying, shredding, grinding, and palletization, followed by laboratory testing based on SNI 8021:2014, SNI 7709:2019, and EN ISO 17225 standards. The results showed a moisture content of 7.85% and an ash content of 7.97%, both within acceptable limits, although the ash level was relatively high. Furthermore, EFB contained 24.20% carbohydrates and 37.99% crude fiber, which contributes to the structural stability of the bio pellets. The calorific value obtained was 1200 kcal/kg, which is considerably lower than values reported in previous studies (≥3500 kcal/kg). These findings highlight the potential of EFB as a renewable energy source while underscoring the need for process optimization to meet quality standards, with possible applications in small-scale and household energy generation.
Desain Tangki Klakson pada Mobil untuk Penyimpanan Udara Bertekanan 8 bar Samosir, Reynaldi; Jufrizal, Jufrizal; Arif, Zainal
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.207

Abstract

The air tank is a crucial component in pneumatic car horn systems, serving to store compressed air to produce a loud and responsive sound. Most pressure vessel studies have focused on high-pressure applications in industry. At the same time, research on low-pressure tanks for automotive use remains limited, particularly those referring to ASME Section VIII Division 1 standards. This study designed a horizontal cylindrical air tank using the thin-walled cylinder approach with steel plates (yield strength 250 MPa, safety factor 4). The analysis showed a minimum wall thickness of 1.18 mm, while the actual thickness of 3 mm provides additional safety margins. The circumferential stress of 24.67 MPa and longitudinal stress of 12.34 MPa are well below the allowable stress of 62.5 MPa. These results confirm that the design is safe and efficient, contributing to the development of low-pressure pressure vessels for automotive applications.
Pengaruh Tekanan Uap Boiler Kecil terhadap Kinerja Mekanis Robinson Engine pada Tekanan Maksimum 2,5 bar Hamdani, Hamdani; Jufrizal, Jufrizal; Idris , Muhammad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.210

Abstract

  This study analyzes the effect of steam pressure variations from a small boiler on the mechanical performance of a Robinson Engine at a maximum pressure of 2.5 bar. A quantitative experimental method was applied with four pressure variations (1.0, 1.5, 2.0, and 2.5 bar). Performance parameters measured included rotational speed, torque, and power, with LPG fuel and water volume maintained as control variables. Results show a significant positive relationship between steam pressure and engine speed; increasing pressure from 1.0 to 2.5 bar raised the speed from 526.2 to 975.6 rpm. These findings highlight the dominant role of steam pressure in engine performance and provide initial quantitative data for developing micro-scale renewable energy-based power plants.
Co-Authors . Zainuddin Abdullah, Ilmi Abdullah, Ilmi Ahmadi, Doni Arif, Zainal Ariyudha, Andhika Barita Barita Barita, Barita Binti Mohd Zulkifli, Nurin Wahidah Bobby Umroh Br Bangun, Eva Riana Darianto, Darianto Darwin, Felix Edwin Harianto Sipahutar Eli Simanjuntak Erna Frida Eswanto Eswanto Eswanto Eswanto Eswanto Is Eswanto, Eswanto Farel H. Napitupulu Farel H. Napitupulu Ginting, Hotman Hamdani Hamdani Haniza Hapzi Ali Harahap, Uun Novalia Harry Parulian Limbong Hasanuddin Hasanuddin Hidayah, Muhammad Himsar Ambarita Husni Thamrin Ilmi Abdullah Ilmi Ilmi Ilmi Ilmi, Ilmi INDRA HERMAWAN Irfandi Irfandi, Irfandi Iswandi Iswandi Iswandi Iswandi Joel Davidson Hasibuan Jos Susilo Kurniawan, Aldi Kurniawan, Eprian Lingga, Jimy Lubis, Rahmadsyah Mahyunis Marwan Marwan Mawardi Moraida Hasanah Muhammad Dendy Agusdiandy Muhammad Idris Muhammad Idris Muhammad Razali Munajat Munajat Munthe, David Jomantes Nasution, Kurnia Rizky Nurdiana Nurdiana Nurdiana Nurdiana Nurdiana Nurdiana Nurhidayatullah Nurhidayatullah Prasetio, Indra Putra, Bintang Kelana Ramadhan, Fandy Saktisahdan, Tengku Jukdin Samosir, Reynaldi Sari Farah Dina Selamat Riadi Simatupang, Joel Hasoloan Siregar, Zufri Hasrudy Siti Masriani Rambe Suherman, Suherman Supriatno, Supriatno Sutrisno, Franky Syahputra, Muhammad Novrin Rizky Syukarni Ali Tarigan, Dicky Adrian Sera Tino Hermanto Tony Siagian Yoko Nikodemus Manik Yopan Rahmad Aldori zainuddin zainuddin Zainuddin, Zainuddin Zarmawan, Husri zulfikar, Achmad Jusuf