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All Journal Journal Mechanical Engineering
Kristofol Waas
Prodi Teknik Produksi Migas, Jurusan Teknik Mesin Politeknik Negeri Ambon
Industrial & Manufacturing Engineering Mechanical Engineering

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Journal : journal mechanical engineering

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ANALISIS PERBANDINGAN PENGGUNAAN BIODIESEL B35 DAN B40 TERHADAP KINERJA MOTOR DIESEL DI PLTMG SERAM PEAKER Adi Septi La Idi; Kristofol Waas; Clay Talakua
Journal Mechanical Engineering Vol. 3 No. 3 (2025): DESEMBER
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i3.3643

Abstract

This study analyzes the effect of using B35 and B40 blended biodiesel fuels on the performance of a MAN 12V 51/60 DF diesel engine at the Seram Peaker Gas Engine Power Plant (PLTMG). The background for this research is the national mandatory biodiesel policy, which continues to increase its blend ratio. The results show that by using 1 kg of fuel, the B35 blend can produce 12.486 MW of power with a fuel consumption of 0.2100 kg/kWh, an effective thermal efficiency of 20.31%, and a mechanical efficiency of 0.91092. Meanwhile, the B40 blend produces 12.367 MW with a higher fuel consumption of 0.21884 kg/kWh, an effective thermal efficiency of 18.92%, and a mechanical efficiency of 0.887581. These data indicate that increasing the biodiesel content from B35 to B40 tends to decrease the power output and engine efficiency, while fuel consumption increase.  Keywords: Biodiesel, B35, B40, Diesel Engine Performance.
Rancang Bangun Prototipe Heat Exchanger Type Shell and Tube Arah Aliran Searah Azmain N Hatuwe; Anisa Muhammad Hayoto; Kristofol Waas
Journal Mechanical Engineering Vol. 3 No. 3 (2025): DESEMBER
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i3.3694

Abstract

This research aims to analyze the design and fabrication of a parallel-flow shell-and-tube heat exchanger prototype. The research was motivated by the need for concrete and effective practical learning media in the Mechanical Engineering Department of Ambon State Polytechnic, which is currently limited to theoretical material. The design method for this device uses a "build and build" approach. This design combines a 6 mm diameter aluminum pipe for the hot fluid tube and a 4 inch diameter galvanized iron pipe as the shell for the cold fluid. The fluid used for the hot and cold sides is water. The mass flow rates applied to the hot and cold fluids are 0.089 kg/s and 0.12572989 kg/s, respectively. The design calculations resulted in the creation of a prototype exchanger with a shell length of 0.5 m, an outer tube diameter of 0.006 m, and 74 aluminum tubes. Leakage testing was conducted using compressed air at 16 psi for 5 minutes. No leaks were found during the test. Keywords : heat exchanger,, shell and tube, parallel flow
Co-Authors Adi Septi La Idi Anisa Muhammad Hayoto Azmain N Hatuwe Clay Talakua