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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi BULLET : Jurnal Multidisiplin Ilmu AMMA : Jurnal Pengabdian Masyarakat
Nor Fajri
Politeknik Negeri Bandung
Aerospace Engineering Humanities Automotive Engineering Chemistry Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing

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Studi Literatur Review Desain Dan Fluida Kerja Pada Shell And Tube Heat Exchanger Nor Fajri; Yudistira Anugrahadi Wiraputra; Fredi Insan Nurfadli; Fisika Prasetyo Putra
BULLET : Jurnal Multidisiplin Ilmu Vol. 5 No. 1 (2026): BULLET : Jurnal Multidisiplin Ilmu (INPRESS)
Publisher : CV. Multi Kreasi Media

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Abstract

Shell and Tube Heat Exchanger s are the most widely used type of heat exchanger in the process, energy, and manufacturing industries due to their structural reliability and operational flexibility. However, various studies show that conventional designs still face limitations in achieving high heat transfer performance with controlled pressure losses. This article aims to critically review approaches to improving the performance of Shell and Tube Heat Exchanger s through design modifications and working fluid selection. The method used a semi-systematic approach to experimental studies, numerical studies, and previous reviews discussing baffle innovations, tube geometry variations, the application of porous media, passive enhancement methods, and the use of nanofluids. The results show that design modifications, particularly to the baffles and tube geometry, can improve heat transfer performance by 20–40% compared to conventional configurations. Passive enhancement and porous media approaches enhance flow mixing and turbulence intensity, but are often accompanied by an increase in pressure loss of up to 15–60%. The use of nanofluids and hybrid nanofluids was reported to improve thermal performance by 25–35%, with the main limitations being increased fluid viscosity and pump power requirements.
Peningkatan Kompetensi Staf Pengajar Vokasi Melalui Pelatihan Intensif Perancangan Mesin Dengan Sistem CAD Model 3D Naufal Aflah Hibatullah; Mochamad Iqbal Rokhim; Muhammad Khoirur Rijal; Slamet Raharjo; Muhammad Ihsan Al Qodar; Nor Fajri
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 12 : Januari (2026): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Competency in Computer-Aided Design (CAD) 3D–based design is a vital foundation in modern vocational engineering education. However, a major challenge in practice is the lack of uniform competency standards among teaching staff, where intuitive modeling practices are often found that are not fully defined, resulting in low design data integrity. This program aims to standardize such technical competencies through intensive training based on the Certified SolidWorks Associate (CSWA) curriculum. The program was conducted entirely in an offline setting over 65 instructional hours, covering fundamental topics ranging from design intent philosophy and parametric sketching to assembly validation using standard mates. The results demonstrate a perfect quantitative outcome, with 100% of participants successfully passing the examination and obtaining the international CSWA certification. This success indicates that structured training interventions are effective in equalizing participants’ competencies. The strategic implication of this program is the establishment of a uniform teaching standard among vocational lecturers, which ultimately ensures that graduates possess digital design literacy aligned with modern industrial best practices.
Overhaul dan Uji Performansi Generator Firman FPG1510 RV1-C Hanni Maksum Ardi; Mokhamad Munir Fahmi; Nor Fajri; Yudistira Anugrahadi Wiraputra; Dibyo Setiawan; Toni Okviyanto
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 12, No 1 (2026): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v12i1.15186

Abstract

Electrical energy is one of the essential needs for garment entrepreneurs in Cileungsi, Bogor Regency, West Java, to support their production activities. However, frequent power outages in the region often disrupt the production process. The Firman FPG1510 RV1-C generator set (genset) can serve as a solution to overcome these outages, but the unit was found to be inoperable after initial evaluation. An overhaul maintenance was performed after component-level servicing failed to restore stable operation. The results of the overhaul process were evaluated through performance testing, which included fuel consumption testing under a 570Watt electrical load and exhaust emission measurements. The performance test results show that the highest fuel consumption rate (ṁbb) was 0.000089 kg/s at 3177 RPM. At the same speed, the highest brake specific fuel consumption (BSFC) was recorded at 0.21456 kg/kWh. The maximum electrical efficiency (ηt) was achieved at 3006 RPM with a value of 17.35%, while the highest brake thermal efficiency (BTE) was 43.45% at 2973 RPM. The emission test after overhaul produced CO levels of 0.92–2.72% and HC levels of 80–153 ppm, both of which comply with the Bandung City emission standards for gasoline engines (CO 4.5% and HC 1200 ppm). A comparison between the post-overhaul performance and the manufacturer’s specifications shows that the indicator shaft power after overhaul reached 1.42 kW at 3006 RPM, compared to 1.17 kW at 3000 RPM in the standard specification. This indicates a 21% increase in shaft power as a result of the overhaul maintenance.
Co-Authors Fisika Prasetyo Putra Fredi Insan Nurfadli Hanni Maksum Ardi Mochamad Iqbal Rokhim Mokhamad Munir Fahmi Muhammad Ihsan Al Qodar Muhammad Khoirur Rijal Naufal Aflah Hibatullah setiawan, Dibyo Slamet Raharjo Toni Okviyanto Yudistira Anugrahadi Wiraputra