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All Journal Harmoni Sosial : Jurnal Pengabdian Dan Solidaritas Masyarakat Cognitia : International Engineering Journal
Akhsan Hamka
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation Other

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Thermal Analysis of the Exhaust Gas Temperature Increase Phenomenon in the Starboard Main Engine Mitsubishi S6R2-T2MTK3L Arham, Muhammad; Muhammad Zainuddin; Husni Mubarak; Akhsan Hamka; Syarifuddin
Cognitia : International Engineering Journal Vol. 1 No. 2 (2025): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v1i2.10

Abstract

This study aims to analyze the thermal performance of the starboard main engine on a tugboat, specifically a Mitsubishi type S6R2-T2MTK3L, by focusing on the phenomenon of exhaust gas temperature increase. Measurements were conducted over six days under two operational conditions: towing an empty barge and towing a fully loaded barge. The results indicate that the exhaust gas temperature was significantly high in both conditions, with a temperature difference of 40 °C at low engine speed and up to 100 °C at high speed. These findings suggest incomplete combustion, indicating the need for further improvement in the engine's combustion process. Meanwhile, fuel temperature remained relatively stable in both conditions, with a maximum difference of only 3 °C at medium and high engine speeds, suggesting that the fuel delivery system is operating safely. The analysis of specific fuel consumption (SFC) revealed inconsistent trends in relation to engine speed. The highest SFC was recorded at 600 rpm while towing a fully loaded barge, at 0.01855 l/kWh. The highest engine torque was 7523.885 Nm at medium speed, while the lowest torque was 7165.605 Nm at high speed. This study concludes that high exhaust gas temperatures serve as a primary indicator of combustion inefficiency in the starboard main engine, requiring further evaluation to maintain operational efficiency and safety of the tugboat.
Penerapan Sistem HVAC Efisien Energi melalui Edukasi dan Pendampingan pada Proyek Rumah Susun BIN-POLRI Muhammad Arham; Syamsumarlin Taha; Asnefi Asnefi; Husni Mubarak; Akhsan Hamka; Sony Malino; Marten Rombe
Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat Vol. 2 No. 3 (2025): Juli : Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/harmoni.v2i3.2110

Abstract

This community service activity aims to provide education and technical recommendations related to energy efficiency and thermal comfort in the BIN Apartment building through simulations using DesignBuilder software. The purpose of the activity is to analyze and optimize the building’s energy consumption and ensure thermal comfort for the residents. The simulation results show that the building's Energy Use Intensity (EUI) is relatively low for the residential category, based on calculations made by the BGH team. The air conditioning (AC) system in conditioned spaces meets the thermal comfort standards according to ASHRAE, ensuring comfortable living conditions in these areas. However, in unconditioned areas, such as the family room, the Predicted Mean Vote (PMV) value reaches 1.5 (hot), indicating thermal discomfort. To address this issue, mechanical ventilation is recommended, with the capacity to produce an average air velocity of at least 0.6 m/s, which will improve airflow and enhance thermal comfort. Alternatively, adding an additional AC unit can also be considered, though it would result in a 20% increase in energy consumption. The findings and recommendations of this activity are expected to provide valuable insights and assist partners in making informed technical decisions when designing efficient and comfortable HVAC systems for vertical state-owned residential buildings. Ultimately, this program aims to optimize both energy usage and comfort, contributing to sustainable building management practices in the future.
Co-Authors Arham, Muhammad Asnefi Asnefi Husni Mubarak Marten Rombe Muhammad Arham Muhammad Zainuddin Sony Malino Syamsumarlin Taha Syarifuddin