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Muhammad Ruswandi Djalal
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Jurnal Teknik Mesin Sinergi
Published by Politeknik Negeri Ujung Pandang
ISSN : 16931548     EISSN : 26849372     DOI : http://dx.doi.org/10.31963/sinergi
Core Subject : Science, Engineering,
Energy Mechanical Engineering
Jurnal Teknik Mesin Sinergi Politeknik Negeri Ujung Pandang mempublikasikan hasil penelitian pada Bidang Teknik Mesin dan Energi.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 456 Documents
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Sistem Pengaturan Beban dan Monitoring Berbasis IoT pada Pembangkit Listrik Tenaga Mikrohidro Jenis Turbin Pelton Salsabila, Syakila; Rifky Zulkarnain, Muhammad; Musa, La Ode; Yusuf Yunus, Muh
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5012

Abstract

Microhydro Power Plants (MHPP) are small-scale power generation systems that utilize water energy through head height and water flow rate. This study focuses on the Pelton turbine, an impulse turbine, and the implementation of an Internet of Things (IoT)-based monitoring system to enhance efficiency and operational stability. Fluctuations in voltage due to load variations are common in small-scale MHPP, highlighting the need for effective load regulation. The aim of this research is to explore the principles of load regulation and monitoring systems, as well as to evaluate the efficiency of the Pelton turbine-based MHPP integrated with IoT. The methodology employed is experimental, utilizing a prototype MHPP to test valve openings of 45° and 90° under IoT-based load regulation. The results indicate that system efficiency is inversely related to the load applied. The highest efficiency recorded at a 45° opening was 8.93% with a load of 6 Watts, while the lowest efficiency was 6.69% at a 17 Watt load. For the 90° opening, the highest efficiency was 8.83%, also occurring at a 6 Watt load. These findings underscore the necessity for efficient load management to optimize the performance of Pelton turbine-based MHPP.
Rancang Bangun Sistem Pendingin (Freezer)Penyimpanan Ikan Menggunakan Energi Surya (Photovoltaic) Pada Kapal Nelayan Noerkhasyiin H, Andi Muhammad; Jaya, Farhan; Firman, Firman; Rahmah, Nur
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5035

Abstract

The utilization of renewable energy, which is currently a major focus due to the abundance of its raw materials and is highlighted by various countries, is the use of solar energy. Solar energy is a source of energy generated from abundant solar radiation that will never run out. Because solar energy can be accessed in almost all locations, it can be utilized, stored, and converted into electrical energy using existing technology. One technology that utilizes solar energy for conversion into electrical energy is solar panels. This research aims to design and develop a fish storage system that uses solar energy as the main power source. The research begins with the design and assembly of each component of the solar power system (PLTS) and the cooling system. Data collection is carried out by testing the assembled cooling system. Subsequently, the obtained data is analyzed to determine the Coefficient of Performance (COP). Based on this research, the maximum Coefficient of Performance (COP) of the tested cooling system is 0.173, with an observed COP range between 0.83 and 0.173. Testing was conducted under various operational conditions to evaluate the system's performance and find the optimal conditions.
Rancang Bangun Tungku Biomassa Tipe Heat Exchanger Untuk Pengering Hasil Pertanian Zulkifli Alif; Nadila; Anshar, Muhammad; Apollo, Apollo
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5040

Abstract

Penggunaan tungku biomassa tipe heat exchanger dalam proses pengeringan hasil pertanian merupakan solusi yang efisien dan ramah lingkungan untuk menggantikan metode pengeringan konvensional yang bergantung pada cuaca. Biomassa sebagai sumber energi terbarukan seperti sekam padi, tongkol jagung, dan limbah kayu memiliki potensi besar sebagai bahan bakar alternatif. Penelitian ini bertujuan untuk merancang serta mengevaluasi kinerja tungku biomassa tipe heat exchanger yang digunakan pada sistem pengering hasil pertanian. Metode penelitian meliputi tahap perancangan alat, perakitan sistem, serta pengujian kinerja dengan menganalisis karakteristik perpindahan panas dan suhu udara pengering yang dihasilkan. Hasil pengujian menunjukkan bahwa tungku mampu menghasilkan suhu udara pengering pada rentang 40–80°C yang sesuai untuk proses pengeringan berbagai komoditas pertanian. Penggunaan bahan bakar biomassa menunjukkan karakteristik pembakaran yang berbeda, di mana sekam padi terbakar cepat namun kurang stabil, tongkol jagung menghasilkan pembakaran yang lebih stabil dengan kadar abu sekitar 1–2%, sedangkan limbah kayu memberikan pembakaran paling stabil dengan kandungan abu rendah sekitar 0,2–1%. Selain itu, sistem heat exchanger mampu memisahkan gas pembakaran dari udara pengering sehingga mencegah kontaminasi asap pada produk. Sistem ini juga mampu mempercepat proses pengeringan hingga sekitar 50% dibandingkan metode pengeringan alami. Hasil penelitian menunjukkan bahwa tungku biomassa tipe heat exchanger memiliki kinerja yang efektif dan berpotensi diterapkan sebagai teknologi pengering hasil pertanian yang hemat energi, ramah lingkungan, dan mendukung pemanfaatan limbah biomassa lokal.
Analisis Perbandingan Tegangan Tembus Antara Minyak Terpurifikasi dan Non Terpurifikasi Pada Transformator Unit 1 PLTA MALEA 2x45 MW Reza Alfirdaus, Muh; Saini, Makmur; Sonong
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5091

Abstract

This study aims to analyze the comparison of breakdown voltage between purified and non-purified transformer oil in the Unit 1 transformer at PLTA Malea. The research focuses on evaluating the quality of transformer oil as an insulating and cooling medium to maintain transformer performance and reliability. The research method used was an experimental method by conducting breakdown voltage (BDV) tests on transformer oil samples before and after the purification process. The testing was carried out using an Insulating Oil Tester in accordance with the IEC 60422-2013 standard, with an electrode gap of 2.5 mm, and each sample was tested six times to obtain the average breakdown voltage value. In addition, supporting tests including viscosity and moisture content measurements were conducted to evaluate the changes in the physical characteristics of the transformer oil. The results showed that the non-purified transformer oil had an average breakdown voltage of 55.11 kV, which was considered unsuitable for operation because it was below the minimum standard. After the purification process, the average breakdown voltage increased significantly to 77.95 kV and met the operational requirements based on the IEC 60422-2013 international standard. These results indicate that transformer oil purification is effective in improving dielectric strength and insulation quality, and therefore can be recommended as a preventive and corrective maintenance method to maintain transformer reliability and extend its operational lifespan.
Alat Pelontar Bola Tennis Nur, Rusdi; Iswar, Muhammad; Djafyero, Fernando; Reski Narsal, Fajar; Alim, Nur
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5197

Abstract

Abstrak: Bidang olahraga pun tidak tertinggal dengan berkembangnya teknologi pada saat ini, khusus dalam olahraga bidang tennis, olahraga tenis biasa di mainkan dua orang sampai empat orang, olahraga ini cukup di minati di berbagai kalangan namun terkendala dalam, latihan dan mengasah kemampuan, dengan adanya alat pelontar bola maka dapat mempermudah peminat olahraga tenis jadi lebih mudah dalam proses Latihan serta mengasah pukulan tujuan penelitian ini adalah untuk membantu proses latihan pemain tennis lapangan menjadi lebih baik dan efisien dengan menggunakan alat pelontar .Tahap penilitian yang telah dilakukan adalah studi literatur, studi lapangan,perancangan, perakitan, pengujian, dan analisa data. Metode penelitian dilakukan dengan pemilihan tempat dan waktu, alat dan bahan prosedur/langkah kerja, tahap perakitan, tahap pengujian alat dan analisa data pengujian. Metode pengambilan data dilakukan dengan mengukur jarak lontaran bola dengan satuan meter. Kesimpulan dari penilitian ini ialah Desain dan sistem mekanik Alat pelontar bola tenis yang telah di rancang sudah sesuai dengan sistem metode pelontaran sehingga dapat berperan sesuai dengan fungsi nya. Alat pelontaran bola tenis dapat melontarkan bola dengan gaya gesek sebagai pelontar. Meningkatkan produktivitas untuk latihan pukulan olahraga tenis lapangan dengan efisien di bandingkan dengan bantuan manusia, alat pelontar bola tenis di rancang untuk memberikan arah lontaran dengan konsisten, selain itu alat pelontar bola tenis ini dilengkapi dengan sistem pengaturan sudut lontaran. Kata kunci: Alat pelontar, bola tenis, gaya gesek, sudut lontaran
Rancang Bangun Alat Pencacah Tandan Kosong Kelapa Sawit Sebagai Bahan Bakar pada Pabrik Semen dan PLTU Ahmad Qodratillah; Akram Alimin; Anshar, Muhammad; Zubair Sultan, Ahmad
Jurnal Teknik Mesin Sinergi Vol 24 No 1 (2026): April 2026
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v24i1.5346

Abstract

Empty palm oil bunches (EPOB) are one of the most abundant solid wastes generated from the palm oil industry, accounting for approximately 30–35% of fresh fruit bunch weight. Despite their availability, their utilization remains suboptimal, particularly as a renewable energy source. This study aims to design, fabricate, and evaluate the performance of an EPOB shredder intended to support co-firing applications in cement plants and coal-fired power plants. The shredder was designed to produce particle sizes of 8–12 cm with an initial target capacity of ±100 kg/h. The research was conducted at the Energy Laboratory of the Mechanical Engineering Department, Politeknik Negeri Ujung Pandang, over a four-month period. Experimental testing was performed at three rotational speeds, namely 1500 rpm, 2000 rpm, and 2500 rpm, to determine the optimal operating condition. The results show that the highest performance was achieved at 2500 rpm, producing a maximum capacity of 381.05 kg/h. Furthermore, the processed EPOB exhibited a calorific value of 4173.54 Cal/kg and a moisture content of 9.4%, indicating its suitability as an alternative fuel for co-firing systems. Although higher rotational speeds increased fuel consumption, the overall performance demonstrated a significant improvement in productivity and fuel quality. The developed shredder effectively enhances the physical characteristics of EPOB, enabling its utilization as a sustainable biomass fuel. This study contributes to waste management strategies and supports the transition toward renewable energy in industrial applications.
Pembuatan Engine Stand Suzuki ST 100 Sebagai Media Pembelajaran di Bengkel Otomotif Politeknik Negeri Ujung Pandang Ari, A. Ariputra; Wahyuni, Nur; Arfandi, Arfandi; Maulana Ilmunandar, Alief; Rahmatullah, Rahmatullah; Lora, Sudirman
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5383

Abstract

Engine stand is an iron frame used as an engine mount. The working principle of an engine stand is to facilitate engine maintenance and repairs. Based on a case study conducted by the researcher, it was found that Politeknik Negeri Ujung Pandang Automotive Workshop did not yet have an engine stand, especially for the Suzuki ST 100 engine. This is also an obstacle when students carry out maintenance and repair practicums. The purpose of this study is to make it easier for students to carry out maintenance and repairs on the engine, so that the Suzuki ST 100 can be operated again as a learning medium for practicums. The place where the Engine Stand was made was at the Ujung Pandang State Polytechnic Automotive Workshop which was carried out from May to August 2024. The method in this study was to assemble the components on the frame, then install the engine on the engine stand that had been made, then overhaul the engine to ensure that the engine could work properly. The test results obtained were that all components could function normally again and the engine stand was safe to use because the strength of the engine stand frame to withstand an engine load of 90 kg, there was no change either bent or broken. The conclusion of this study is that the engine stand can be used as a strong engine mount and the Suzuki ST 100 engine can run normally after making several repairs and replacing its components.
Rancang Bangun Alat Pembuka Otomatis Water Separator Pada Mesin Diesel Pembangkit Listrik Tenaga Diesel Di Pulau Lae - Lae Sulawesi Selatan Risal, Muhammad; Wichaksono, Aryo; Saini, Makmur; Hamzah, Nur
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5531

Abstract

Penelitian ini bertujuan untuk merancang prototype dan mengembangkan sebuah alat pembuka otomatis water Separator untuk meningkatkan efisiensi dalam proses pemisahan air dan bahan bakar pada sistem water Separator. Alat ini dirancang dengan menggunakan pendekatan mekanik dan elektronik memanfaatkan sensor level air dan mikrokontroler untuk mendeteksi keberadaan air dan mengaktifkan mekanisme pembuka katup secara otomatis. Kandungan pH air pada kondisi normal berkisar 6-8,5ppm (part permilion). Data perawatan operator PLTD Lae-Lae pada sistem water Separator terdapat 10 tetes air atau berkisar antara 0.15 ml hingga 0,50 ml. Dari hasil pengujian level sensor air mendeteksi ketinggian air sebanyak 150 ml dan katup membuang air selama 10 detik. PLTD Lae - Lae beroperasi 24 jam dan menghabiskan 600 liter solar dan tangki kapasitas 10 ribu liter. untuk tangki bulanan, terdapat 3 unit mesin yang beroperasi maka terdapat tangki harian kapasitas 1000 liter l. hasil pengukuran tegangan input baterai 12.52V dan output regulator 5.08V dan sumber energi yang di gunakan DC 12V kapasitas alat dipisahkan dalam 1 waktu 150 ml. Efisiensi pembuangan air pada alat tersebut 90%.
Pengembangan Desain Mesin Pengerolan Besi Pejal dengan Sistem Penggerak Ganda untuk Aplikasi Bengkel Skala Menengah Suyuti, Muhammad Arsyad; Nasrullah, Baso; Sarira Tular, Agung; Ramadhan, Gilang; Ida War Tamar, Tutut
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5604

Abstract

Berdasarkan hasil perancangan, simulasi, dan pengujian yang telah dilakukan, dapat disimpulkan bahwa mesin pengerolan besi yang dikembangkan dalam penelitian ini berhasil memenuhi kriteria teknis dan operasional. Mesin ini dirancang dengan dua sistem penggerak, yaitu manual dan motor listrik tiga fasa berdaya 3 kW, yang memberikan fleksibilitas penggunaan pada berbagai kondisi sumber daya. Hasil simulasi menggunakan cad software menunjukkan bahwa seluruh komponen utama khususnya rangka dan penyangga ulir, memiliki nilai faktor yang menandakan tidak ada bagian struktur yang mengalami kondisi kritis, serta tegangan maksimum yang jauh di bawah batas kekuatan tarik material. Pengujian kinerja di lapangan menunjukkan bahwa mesin mampu mengerol besi pejal berdiameter 8–16 mm dan pelat strip dengan ketebalan 2–4 mm, penyimpangan diameter lingkaran luar semua berada dalam batas toleransi ±5 mm. Waktu pengerjaan rata-rata per unit berada di bawah 9 menit, menunjukkan efisiensi produksi yang signifikan dibandingkan metode manual. Desain mesin yang kompak dan penggunaan sistem transmisi sederhana juga memberikan kemudahan dalam perawatan dan menekan biaya konstruksi.
Automatic Fire Pump System Menggunakan Smart Relay Zelio dan Monitoring Tekanan Air Raspberry Pi di PT. Eastern Pearl Flour Mills Rammadhan, Wahyu; Rofiq Azis, Muhammad; Lewi, Lewi; Hamzah, Firman
Jurnal Teknik Mesin Sinergi Vol 23 No 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i2.5613

Abstract

Abstract: Occupational Health and Safety (OHS) is a crucial aspect in industry, especially in preventing and addressing fire hazards that can cause major material damage and even loss of life. PT. Eastern Pearl Flour Mills currently has a fire pump system, but its operation is still done manually and is not yet equipped with real time monitoring, reducing operational efficiency and response to emergency conditions. This research aims to design an Automatic Fire Pump System capable of activating three types of fire pumps Jockey Pump, Electric Pump, and Diesel Pump automatically using a Smart Relay Zelio. In addition, the system is equipped with a real time pressure monitoring feature using Raspberry Pi Pico W connected to a Firebase platform, and displayed in a web interface. The system operates based ON inputs from pressure switches and 4–20 mA pressure sensors, which are converted into digital data via Raspberry Pi. In automatic mode, the Smart relay controls the pumps according to the pressure levels detected. In manual mode, the user can activate the pumps remotely through the Firebase-based web interface. The test results show that the system can operate properly in both modes, with accurate and stable pressure readings, as well as responsive pump control. The system significantly improves the speed of detecting low pressure, reduces the risk of manual failure, and enhances overall safety and operational efficiency of the fire protection system at PT. Eastern Pearl Flour Mills.

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