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All Journal Turbo : Jurnal Program Studi Teknik Mesin Jurnal Teknik Mesin, Industri, Elektro dan Informatika JIPITI: Jurnal Pengabdian kepada Masyarakat
Muhammad Ridwan
Institut Teknologi Perusahaan Listrik Negara
Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Other

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Analisis Efisiensi Termal PLTGU Muara Karang Blok 2 Menggunakan Sankey Diagram pada Beban 135 MW Muhammad Ridwan
TURBO [Tulisan Riset Berbasis Online] Vol 14 No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4302

Abstract

The growing demand for electricity requires a proportional increase in power generation to ensure a stable supply for both public and industrial needs. To maintain this stability, Gas and Steam Power Plants (PLTGU) must operate in optimal condition. Thermal efficiency plays a crucial role in determining the plant’s ability to generate electricity effectively. This study aims to analyze the thermal efficiency of PLTGU UP Muara Karang Block 2 at a 135 MW load using the Sankey Diagram approach. This method provides a comprehensive visualization of energy flow and system efficiency. The analysis is based on the First Law of Thermodynamics, focusing on key components such as the compressor, gas turbine, combustor, and other essential elements. The results show an increase in thermal efficiency from 84.92% to 86.40% after an overhaul. This improvement reflects better heat distribution to the main components, indicating more optimal energy conversion. Additionally, the reduction in heat loss signifies an overall enhancement in energy efficiency.
Penerapan Teknologi Scissor Lift untuk Keselamatan Kerja UMKM Servis Meja Biliar Arief Suardi Nur Chairat; Muhammad Ridwan; Hendri Hendri; Agus Wibawa; Desylia Fitria Nurhadi; Elizabeth Pintauli Hutapea; Sumayya Nurlaily
JIPITI: Jurnal Pengabdian kepada Masyarakat Vol. 3 No. 2 (2026): Mei 2026 - JIPITI: Jurnal Pengabdian kepada Masyarakat
Publisher : PT. Technology Laboratories Indonesia (TechnoLabs)

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Abstract

Sektor UMKM jasa instalasi meja biliar menghadapi kendala serius terkait penanganan material secara manual, khususnya saat mengangkat slate (batu alam) seberat 150 kg. Aktivitas ini berisiko tinggi memicu Musculoskeletal Disorders pada pekerja dan sangat tidak efisien secara operasional. Oleh karena itu, kegiatan pengabdian ini bertujuan untuk mengimplementasikan teknologi tepat guna berupa Perangkat Angkat Gunting (Scissor Lift) Manual bagi mitra PT Kreasi Tiga Bola. Pelaksanaan pengabdian menggunakan pendekatan User-Centered Design, yang meliputi tahapan survei lapangan, perancangan desain, fabrikasi, uji coba fungsional, serta pelatihan Keselamatan dan Kesehatan Kerja (K3). Hasil pengabdian menunjukkan adanya perbaikan postur pekerja ke posisi berdiri netral yang berhasil menurunkan Lifting Index (LI) dari kategori sangat berbahaya menjadi aman (LI < 1). Selain itu, intervensi alat ini terbukti memangkas waktu pemosisian material dari 20 menit menjadi kurang dari 5 menit, serta mengoptimalkan kebutuhan tenaga kerja dari 4 menjadi 2 orang. Pelatihan yang diberikan juga berhasil meningkatkan pemahaman K3 teknisi sebesar 85%. Kesimpulannya, penerapan scissor lift manual ini sangat krusial karena efektif mengeliminasi risiko cedera fisik sekaligus memberikan nilai tambah berupa peningkatan efisiensi ekonomi dan produktivitas usaha mitra.  
Pengaruh Material Elektroda dan Variasi Elektrolit terhadap Kinerja Elektrolisis Air pada Arus 10–50 A dalam Sistem Skala Kecil Nadira Ghina Azzahra; Muhammad Ridwan; Lia Nur Octavia; Rudina Okvasari
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 5 No. 2 (2026): Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v5i2.6062

Abstract

The growing demand for clean energy sources has driven the development of efficient hydrogen production technologies, one of which is water electrolysis. The performance of electrolysis systems is influenced by various parameters; however, understanding of the dominant factors in small-scale systems remains limited. This study aims to examine the effects of electrolyte type (NaOH, KOH, and NaCl), electrolyte concentration (1N–5N), electrode material (stainless steel 316 and aluminum), and electrode thickness on the performance of water electrolysis under electric current variations of 10–50 A. System performance was evaluated based on the volume of gas produced within a fixed operating time of 5 minutes. The results indicate that increasing electric current consistently enhances the volume of gas generated under all experimental conditions. Nevertheless, differences in system performance are more strongly influenced by electrolyte characteristics than by other parameters. The KOH electrolyte produced the highest gas volume across all current variations, with an increase of approximately ±10–15% compared to NaOH and ±20–30% compared to NaCl. Increasing electrolyte concentration improved performance up to a certain limit before mass transport limitations occurred. Overall, system performance is more strongly governed by electrolyte type and concentration than by electrode characteristics, indicating that electrolyte-based optimization is a more effective approach.
Co-Authors Agus Wibawa Arief Suardi Nur Chairat Desylia Fitria Nurhadi Elizabeth Pintauli Hutapea Hendri Hendri Lia Nur Octavia Nadira Ghina Azzahra Rudina Okvasari Sumayya Nurlaily