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All Journal JURNAL RISET TEKNOLOGI KELAUTAN Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Penelitian Enjiniring Fakultas Teknik Unhas International Journal of Marine Engineering Innovation and Research Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Journal of Marine-Earth Science and Technology Jurnal Riset & Teknologi Terapan Kemaritiman Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Muhammad Iqbal Nikmatullah
Unknown Affiliation
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Transportation

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Performa Ducting pada Sistem Pengkondisian Udara Kamar Mesin Kapal Ferry Ro-Ro Lintas Lembar – Padang Bai Nikmatullah, Muhammad Iqbal; Sitepu, Andi Husni; Muhammad, Andi Haris; Hariyanto, Surya; Ilyas, Rachmat Zakaria
Jurnal Riset & Teknologi Terapan Kemaritiman Vol. 2 No. 2 (2023)
Publisher : Departemen Teknik Sistem Perkapalan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jrt2k.122023.04

Abstract

Sistem ducting merupakan sistem yang bertugas untuk mengkondisikan udara pada suatu ruangan dan merupakan salah satu sistem yang sangat vital untuk direncanakan pada kamar mesin kapal, bukan hanya berfungsi untuk suplai udara namun juga untuk menjaga suhu pada kamar mesin, merujuk pada rules BKI volume 3 tentang permesinan, suhu udara di kamar mesin tidak boleh melebihi 45 °C, pada penelitian ini, kamar mesin yang dijadikan objek penelitian yaitu kamar mesin pada kapal ferry ro-ro lintas Lembar - Padang Bai. Objek ini dipilih karena sistem ducting di kamar mesin kapal ini sudah direncanakan akan tetapi belum dipasang karena kapal ini masih dalam tahap pembangunan, maka dari itu penelitian ini hadir untuk menganalisis performa dari sistem ducting yang telah direncanakan dengan menggunakan Computational Fluids Dynamic (CFD). Hasil penelitian ini yaitu sistem ducting yang sudah direncanakan dapat menjaga suhu kamar mesin di 38,9 °C pada kondisi beban panas maksimum, 37,4 °C pada kondisi berlayar dengan luaran daya mesin utama sebesar 100 %, 37,1 °C pada kondisi berlayar dengan daya mesin utama 75 %, 36,7 °C pada kondisi berlayar dengan daya mesin utama 50 % dan 37,2 °C pada kondisi masuk-keluar pelabuhan, 36,06 °C pada kondisi bongkar muat serta 35,92 °C pada kondisi kapal berlabuh.
Modification of Traditional Fishing Boat Outriggers into a Simple Electric Power Plant Nikmatullah, Muhammad Iqbal; Baharuddin, Baharuddin; Zulkifli, Zulkifli; Alwi, Muhammad Rusydi; Sitepu, Andi Husni
Indonesian Journal of Maritime Technology Vol. 1 No. 2 (2023): Volume 1 Issue 2, December 2023
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v1i2.1050

Abstract

The outrigger is one of the components of the boat attached to the outside of the boat. Outrigger has a fairly vital function because it can make the boat stable when fishermen do activities at sea. This study aims to determine the potential of electrical energy that can be generated in the outrigger. In this study, the outrigger shape was modified so that the water flow could be directed into the outrigger cylinder and rotate the turbine to produce electrical energy. This modification was carried out without eliminating the main function of the outrigger supporting the stability of fishing boats. The electrical energy produced is stored in the battery to be used as a source of electricity for lighting at night. The results of this study indicate that the electrical energy produced by outriggers can be used as a source of lighting for traditional fishing boats. However, further research is still needed to determine the loss of ship resistance with this modification.
Efektivitas Keel Cooler pada Sistem Pendingin Mesin Penggerak Utama Kapal Nikmatullah, Muhammad Iqbal; Klara, Syerly; N, Agung Setiawan
Jurnal Penelitian Enjiniring Vol 28 No 1 (2024)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052024.05

Abstract

Kapal OT. Skylie yang diproduksi oleh PT. Samudra Marine Indonesia merupakan salah satu jenis kapal tanker yang menggunakan Keel Cooler sebagai sistem pendingin mesinnya. Keel Cooler ini menjadi salah satu alat penukar kalor tipe baru yang diaplikasikan di dunia perkapalan karena dipasang secara eksternal pada lambung kapal di bawah permukaan air. Setelah diketahui efektivitas dari Keel Cooler tersebut selanjutnya penelitian ini dikembangkan menjadi optimasi Keel Cooler dengan tujuan untuk mengetahui ukuran lebar Inlet yang optimum pada Keel Cooler system. Penelitian ini menggunakan metode analisis dan simulasi menggunakan software Ansys. Berdasarkan hasil perhitungan pada beberapa variasi dimensi lebar Inlet Keel Cooler diperoleh nilai suhu yang minimum pada variasi lebar III dengan suhu minimum pada simulasi CFD sebesar 32 °C, perpindahan kalor terendah sebesar 145,176 W/m2°C pada pada variasi lebar III dengan ukuran lebar pipa Inlet 0,78 meter,. Maka dapat disimpulkan bahwa semakin kecil dimensi ukuran Inlet pada Keel Cooler maka suhu minimum pada Keel Cooler akan lebih efektif dan nilai perpindahan kalor semakin besar dan variasi ukuran yang diteliti memenuhi nilai standar efektivitas penggunaan Keel Cooler.
Optimasi Keel Cooler pada Sistem Pendingin Mesin Induk Kapal Nikmatullah, Muhammad Iqbal; Ahyuni, Sri; Klara, Sherly; Mahmuddin, Faisal; Eka, A. Erwin
Jurnal Penelitian Enjiniring Vol 28 No 2 (2024)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.112024.05

Abstract

OT ship Skylie is a type of tanker that uses a keel cooler as its engine cooling system. The keel cooler is a new type of heat exchanger that is applied in the shipping world because it is installed externally on the ship's hull below the surface of the water. This study aims to determine the optimum length dimensions of the keel cooler system. Methods of analysis and simulation using Ansys software. Based on the calculation results on several variations of the keel cooler length dimensions, the greatest heat transfer value is 6.655 x 105 W in the length variation II with an inlet pipe size of 53.85 meters, an outlet pipe of 47 meters, and a pipe length of 44 meters with the greatest effectiveness value of 80.138%. Meanwhile, the lowest heat transfer was 4,503 x 105 W in the length variation III with an inlet pipe size of 37.85 meters, 31 meters outlet pipe and 28 meters long pipe with the lowest effectiveness value of 79.910%. Therefore it can be concluded that the longer the dimensions of the keel cooler, the greater the heat transfer value and effectiveness and the size variations studied meet the standard values ​​​​for the effectiveness of using the keel cooler.
Load Variation Analysis Of Generator On Lembar-Padang Bai Ro-Ro Ships For Safety Maritime Rivai, Haryanti; Baharuddin, Baharuddin; Alwi, M. Rusydi; Iqbal Nikmatullah, Muhammad; Damis, Masyhuri
International Journal of Marine Engineering Innovation and Research Vol 10, No 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i2.22828

Abstract

A generator is vital for ship operations, serving as a source of electrical power generation on board. The electrical system changing loads every second. Even with these changes, the power demand stays steady and must be supplied correctly. Voltage stability shows how well the system can keep the voltage steady during normal operation or after something goes wrong. Things like added loads or changes in the system setup can also affect this stability. The method used in this research is circuit modeling that conducted using the Electrical Transient Analysis Program (ETAP) software to collect data. This modeling is essential for designing a system that can be effectively simulated. The result is the voltage and frequency stability values while the air compressor motor operates at 4.5kW showed no significant voltage changes. In contrast, when the electric bow thruster motor, operating at 335kW, runs, the voltage dropped to 85% within 6.5 seconds. During a short circuit at the 15th second compartment bus, the engine room bus experiences a voltage dropped of 77%, while the hull compartment bus dropped by 45%. This showed that the system is unsafe for the equipment, as the as a voltage.
IMPROVED PROPELLER EFFICIENCY OF A FERRY SHIP WITH ASYMMETRIC PRE-SWIRL STATOR Muhammad, Andi Haris; Nikmatullah, Muhammad Iqbal; Kalsum AL, Ummi
Journal of Marine-Earth Science and Technology Vol. 2 No. 1 (2021): April
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1888.178 KB) | DOI: 10.12962/j27745449.v2i1.73

Abstract

The International Maritime Organization (IMO) has introduced the importance of the Energy Efficiency Design Index (EEDI) to anticipate global warming and depletion of fuel oil through the development of an Energy Saving Device (ESD) in ship propulsion systems. Pre-swirl stator is a type of ESD installed in front of the propeller which aims to increase propulsion efficiency by reducing the loss of rotational energy in the propeller flow. The purpose of this study is to determine the effect of the 4 blades pre-swirl asymmetric stator diameter on the improved propeller efficiency of KMP Bontoharu using the Computation Fluid Dynamics (CFD) software (Ansys-CFX 18.1). The results showed that the use of a pre-swirl stator on the propeller of KMP Bontoharu could increase the propeller efficiency by 6.64% at a stator diameter of 1.1 DP.
Co-Authors . Baharuddin ., Rahimuddin Ahyuni, Sri Alwi, M. Rusydi Andi Haris Muhammad Andi Haris Muhammad Andi Husni Sitepu Arkaan Yunus, Muhammad Fayyadh Baharuddin Baharuddin - Baharuddin . Baharuddin Baharuddin Baharuddin, Baharuddin Balqis Shintarahayu Chatarina Umbul Wahyuni Damis, Masyhuri Eka, A. Erwin Faisal Mahmuddin Ganding Sitepu Hariyanto, Surya Haryanti Rivai Haryanti Rivai, Haryanti Haryanto Haryanto Hasnawiyah Hasan Ilham Nur, Muhammad Ilyas, Rachmat Zakaria Kalsum AL, Ummi Klara, Sherly Lukman Bochary M. Rusydi Alwi M. Rusydi Alwi Mansyur Hasbullah Misliah - Muhammad Faizal Muhammad Rusydi Alwi N, Agung Setiawan Rahimuddin Rahimuddin Rahimuddin Rivai, Haryanti Surya Hariyanto Surya Haryanto Syerly Klara Zulkifli A Yusuf Zulkifli Yusuf Zulkifli Zulkifli Zulkifly Zulkifly