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All Journal Jurnal JEETech Jurnal Teknik Mesin Sinergi
Yusuf Yunus, Muhammad
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Pengaturan Jarak Bola (Sphere Gap) Pembangkitan Tegangan Tinggi Impuls Secara Semi Otomatis Sonong, Sonong; Yusuf Yunus, Muhammad; Marhatang, Marhatang; Saini, Makmur; Nawir, Herman; Ruswandi Djalal, Muhammad
Jurnal JEETech Vol. 4 No. 1 (2023): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.625 KB) | DOI: 10.32492/jeetech.v4i1.4101

Abstract

An overhaul is a process of dismantling a problematic engine so that it can be examined more thoroughly. During the overhaul, the problematic engine components are replaced. The overhaul of the sphere gap setting of the semi-automatic high impulse voltage generation is also intended to maximize the K3 system and the level of accuracy when conducting research on impulse voltage generation. The current condition after the occurrence of damage to the automatic sphere gap adjustment machine. The sphere gap setting is done manually, causing the desired ball gap distance to be not very accurate, and the risk of work accidents is higher in the high voltage laboratory. In the first stage of work, an inspection and measurement were carried out to replace the capacitor and limit switch components because they could no longer be used. As well as improvements to the electromagnetic brake components. From the test results, it was found that the distance measurement was as expected and it can be proven that after an overhaul, the semi-automatic spacer can function normally again so it can make it easier to conduct high voltage impulse research. In addition, from a security point of view, it is better because the spacing between the balls is done outside the high-voltage impulse generation cage
Rancang Bangun Prototipe Solar Home System Menggunakan Baterai Lithium Sebagai Penyimpan Energi Marhatang, Marhatang; Yusuf Yunus, Muhammad; Sonong, Sonong; Lewi, Lewi; Tandioga, Remigius; Ruswandi Djalal, Muhammad
Jurnal JEETech Vol. 5 No. 1 (2024): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i1.5106

Abstract

Utilizing the Solar Home System requires a battery as an energy storage medium produced from photovoltaic modules. Today's batteries are lead-carbon Valve Regulated Lead Acid (VRLA) batteries. This type of battery has a 90-95% round-trip efficiency and a deep discharge (DOD) level of 80%. This type of battery is not environmentally friendly because it produces lead acid. Therefore, the development of batteries in the SHS system from lithium battery technology is carried out. Besides being environmentally friendly, its round-trip efficiency is quite good compared to lead-carbon, which is 92-96% with a DOD level of 100%. In this study, it is proposed to apply lithium batteries on a lab scale so that they can assist students in developing scientific fields, especially lithium battery-based energy storage. In addition, this research will describe the process of making and prototyping lithium batteries in solar practicum learning media. From the test results obtained, a laboratory-scale Solar Home System prototype for solar power system practicum using Lithium batteries as Energy Storage. The average effect of charging the battery is 21.09 watts. With the highest battery charging voltage set at 14.08 Vdc. And the highest charging current rate is 1.37 A, with the highest battery charging efficiency rate of 12%. The characteristics of the Lithium battery itself, the DoD shown is also good when the capacity read on the battery meter is 0%. The battery can still supply 15 watts of load for 20 minutes
Analisis Audit Energi Listrik di Balai Pelatihan Vokasi dan Produktivitas Bantaeng Gunawan Thamrin, Hendra; Hamzah, Nur; Yusuf Yunus, Muhammad
Jurnal Teknik Mesin Sinergi Vol 23 No 1 (2025): April 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i1.5508

Abstract

An electrical energy audit is a systematic process of evaluating energy consumption in a building or facility in order to identify energy efficiency and potential savings. energy use and potential savings. This research aims to conduct an electrical energy audit in order to determine the intensity of energy consumption (IKE) and provide technical recommendations that support energy efficiency in the office of the Bantaeng Vocational and Productivity Training Center. The energy audit was conducted by collecting electricity consumption data from PLN billing records as well as direct measurements in the field. The analysis focused on the calculation of Energy Consumption Intensity (ECI) to assess the energy performance of the building. The audit results show that the intensity of energy consumption (IKE) for one year, the value of energy consumption intensity (IKE) for one year, the value is 12.8 kWh/m2/year which means it is still below the ASEAN-USAID standard of 240 kWh/m2/year. Likewise, compared to the IKE standard according to the Regulation of the Minister of Energy and Mineral Resources No. IX. Minister of Energy and Mineral Resources Regulation No. 3 of 2025 which is <99 kWh/m2/year with a total building area of 11,644 m2 > 5000 m2 is categorized as very efficient.
Co-Authors Gunawan Thamrin, Hendra Herman Nawir, Herman Lewi Lewi Makmur Saini Marhatang Marhatang Muhammad Ruswandi Djalal Nur Hamzah Remigius Tandioga Sonong