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Lely Pramesti
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Proceedings Conference on Marine Engineering and its Application
Published by Politeknik Perkapalan Negeri Surabaya
ISSN : -     EISSN : 26553333     DOI : https://doi.org/10.33863/cmea.v6i1.2426
Core Subject : Engineering,
Engineering Mechanical Engineering
The Proceedings of Marine Engineering and Its Application (CMEA) is an open-access publication, allowing global access for readers to publish, read, download, cite, and share the content freely. CMEA focuses on the dissemination of original ideas, innovative research, and practical developments contributed by scientists and engineers from both academic and industrial backgrounds. The journal welcomes a wide range of submissions, including theses, research articles, and review papers, covering topics in mechanical engineering, marine engineering, and related fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 109 Documents
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DESAIN SISTEM PROPULSI HYBRID PADA FAST PATROL BOAT 28 METER Muhammad Septaldi Millenian S; Raden Dimas Endro W; Anggara Trisna Nugraha
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2432

Abstract

Hybrid System Vessel technology has recently become a frequently discussed topic in machinery technology. The Hybrid System Vessel technology in question is a ship that runs with two power sources, an engine that works with a fuel power source and an electric motor that works with an electric power source. The object of this research is a 28 m Patrol Ship with a speed of 25 knots in full conditions (MCR), 22 knots in Patrol conditions and 15 knots in economic conditions. The electric motor used is the PRAXIS DC EMG590d-620 motor with a power of 584 kW supplying motor power from the battery and the diesel motor used is the Baudoin M126.3 motor with a power of 1104 Kw. Simulation using MatLab by modeling the motor and propeller to find the value of torque, thrust and speed advance. Obtained power prediction DC motor, motor speed can meet the needs of the desired economic speed of 16.78 kNot, obtained power prediction Diesel Motor, motor speed can meet the needs of the desired patrol speed of 22.17 kNot
Analisis Unjuk Kerja Four-Stroke Diesel Engine Dengan Bahan Bakar Multi-Feedstock Biodiesel (Minyak Kelapa Sawit, Minyak Kemiri, Minyak Biji Jarak) Moch Alfian; Edi Haryono; Aminatus Sa'diyah
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2436

Abstract

This study aims to analyze the performance of four-stroke diesel engines using multifeedstock biodiesel fuel (palm oil, candlenut oil, and castor seed oil). The three raw materials will be combined and will be mixed with pertamina dex, so that it becomes B20, B35, and B100. Experiments were carried out with engine speed variations of 900, 950, 1000, 1050 rpm and loading variations of 1000 watts, 2000, watts, and 3000 watts. The results showed that the use of multifeed-stock biodiesel B20, B35, and B100 affected the performance of the engine produced. Power and torque values tend to increase when using B20, B35, and B100 fuel. However, the gsfc value produced is not determined by the greater the percentage of biodiesel. B100 fuel is the highest fuel in producing power and shock, while B35 is the lowest gsfc value fuel.
Kajian Eksperimen Pengaruh Rasio Diameter Silinder Di Depan Returning Blade Turbin Angin Savonius Myring N=1 Dengan Fin Maulana Jalalluddin Safii; Priyo Agus Setiawan; Eky Novianarenti
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2438

Abstract

Savonius wind turbine have the lowest efficientcy compared to other wind turbines. Based on the previous research, additional interfering cylinder and fin to the turbine was less efficient so there is still an opportunity to improved. Based on this condition, the experimental study was carried out by adding 1 fin to each turbine blade and placing an interfering cylinder in front returning blade to determine its improvement. It aslso compared between both of them in the experimental also used the myring equation n=1. Wind turbine dimension was 40 cm and variation of interfering cylinder diameter ratio was ds/d = 0,4;0,5;0,6; and 0,7. The speed variation was 5 m/s, 6 m/s and 7 m/s. The best performance of the savonius myring n=1 wind turbine is obtained at ds/d = 0,4 at a speed of 6 m/s. The coefficient of torque (Ct) performance increase 21.47% and the coefficient of power (Cp) 89.80%
ANALISIS KELELAHAN NEW PROPELLER KAPLAN K4-70 SERIES PADA KAPAL TUGBOAT 1000 HP MENGGUNAKAN METODE COMPUTIONAL FLUID DYNAMICS Muhammad Fauzan; Adi Wirawan Husodo; Benedicta Dian Alfanda
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2439

Abstract

The function of a tugboat is to tow or push other ships in harbors, open seas and rivers or canals. The propeller used should have an age according to the docking schedule, which is 5 years. However, the propeller was damaged before the ship docked. The owner ordered a new type of propeller with the Kaplan K4-70 series type. The loading given the results of the contour pressure on the CFD software is run using a variation of the propeller rotation. The FEM method for obtaining Hot Spot Stress uses the stress that occurs, namely the von Mises stress (equivalent stress). S-N curve to analyze the results of voltage values and cycles. After that, the value of the fatigue life of the propeller itself can be found. From the results of this study there is an influence on the thrust and torque values for each variation where from the running results the greatest value is obtained at 198.53 rpm at 18601.503 N and 3810.881 Nm and 234.24 rpm at 41563.213N and 6585.7302 Nm. The effect of variations in propeller rotation on thrust and torque values is that the greater the propeller rotation, the greater the value of thrust and torque as well. The location of the hot spot stress for each variation is at the root back blade of the propeller. The maximum stress/stress that occurs in the propeller is 198.53 rpm at 12.07 MPa, 238.24 rpm at 34.646 Mpa and for 357.35 rpm at 97.393. The effect of loading is that the greater the rpm/load value, the greater the resulting stress value (Von-Misses). The service life of the propeller is 198.53 rpm with a service life of 300 days for 25.865 years. For 238.24 rpm for 22.43 years and for 357.35 rpm for 14.57 years.
Perencanaan Sistem Perpipaan Pemadam Kebakaran pada Galangan Kapal dengan Luas Area 114.389 m2 Tubuh Pierehanto; annas Firmansyah; Projek Priyonggo Sumangun L; Lely Pramesti
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2442

Abstract

Fires can occur anywhere and anytime, including shipyards. Fires in shipyards can cause companies to incur repair costs, recover company assets, and provide insurance for victims. The existing extinguishing system is still simple and does not cover the entire area. Therefore, it is necessary to plan a fire extinguishing system with NFPA and SNI standards that can cover all areas of the company. The initial planning step is to design the pipeline system, then select pumps, calculate pipe support requirements, and calculate estimated material costs. This research resulted in a total head using pipe flow expert software of 210.114 m. The percentage of errors between manual calculations and software is 3.363%. The need for pipe support for an 8-inch pipe requires a minimum of 1 support, while a 6-inch pipe requires a minimum of 71 supports. So, theestimated cost of materials and equipment in this plan is IDR 3,443,630,750.
Penjadwalan Perawatan Komponen Pada Sistem Pendingin Main engine Crew Boat 41 GT Andreas Nova; Tasya Putri Lindyawati; Nurvita Arumsari; Aminatus Sa'diyah
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2444

Abstract

Currently, there is a growing trend of damages occurring to the main engine, with some cases leading to sailing delays or even endangering human safety. The Crew Boat 41 GT is a vessel operating to transport crews or provide offshore support. Therefore, it is crucial to pay attention to the maintenance of its main engine, especially the cooling sub-system, which plays a vital role in maintaining the working temperature of the main engine to prevent overheating. Consequently, a suitable maintenance scheduling strategy is required for the sub-system components of the Crew Boat 41 GT's main engine to ensure the operational efficiency of the main engine is not disrupted. This study aims to predict the reliability using both qualitative (FMEA) and quantitative methods (theoretical and Monte Carlo simulation) to develop a plan for preventive maintenance scheduling, FMEA analysis identified three critical components, there are sea water pump, heat exchanger, and fresh water pump. The results of the quantitative analysis for these three critical components showed that the RLLM = 0.6, with little difference between the two methods. Additionally, error calculations were performed using RMSE, MAPE, and MAE, with results close to 0. Moreover, from the evaluation of corrective and preventive maintenance, it was found that preventive maintenance is more recommended as it can save costs by approximately 16.26% or Rp 7,703,292.56 for a single maintenance of all components.
Redesign Sistem Pengering Pada Mesin Freezer Multifungsi Dengan Memanfaatkan Panas Dari Kondensor Yogi Sandi Pratama; Projek Priyonggo; George Endri Kusuma
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2445

Abstract

In previous studies, a Multifunction Freezer machine was made, which is a tool similar to a refrigerator in general, namely to cool food ingredients, but the advantages of this Multifunction Freezer Machine are made so that it can have 2 uses, namely, to cool and dry food ingredients such as fish etc. The weakness of the drying system in the previous multifunctional freezer machine was in the wrong placement of the fan and condenser which resulted in a less than optimal reduction of the water content in the ingredients (fish) for processing salted fish. The method used is to redesign or redesign the placement of the fan and condenser so that the drying system can work optimally and can reduce the water content of the ingredients (fish) as needed for salted fish processing. This research is to redesign the Multifunctional Freezer machine which was previously made by placing the fan and condenser on the left side of the drying chamber and by adding a glass heater after the condenser and the results obtained are room temperature 48.7 oC and fish temperature 34.2 oC, moisture content 6.583%, drying rate 0.378 gram/minute and performance factor 3.74 within 180 minutes or 3 working hours of a Multifunctional Freezer Machine.
Perancangan Ballast Piping System Pada Kapal Ro-Ro Passanger 146 M Ikrom Tri Mahdi; Bambang Antoko; Ekky Nur Budiyanto
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2607

Abstract

The way ballast system works in general is to fill the ballast tank located at double bottom with seawater taken from the sea chest. The sea water is sucked up by ballast pump through main pipeline and branch pipes. In addition there is a valve that functions as opening and closing of the flow, and the overboard as a drain which is above the ship's draft. On this ship, the function of a cargo ship is changed to a passenger ship. Because there was a change in the equipment in engine room, it required a re-design of the ballast system. The design of this system follows the recommendations from BKI 2022 Volume III of the Machinery Installation Regulations. The design of the ballast system piping uses a ring main type, in the form of PID design and isometric design. The total length of pipe is 241 meters with details of 165,6 meters for the main pipe and 75,4 meters for the branch pipe. Using the type of galvanized steel material with ASTM A795 standards. The nominal diameter used of this system is based on calculations, namely 250 mm for the main pipe and 90 mm for the branch pipe.
Analisis Pemilihan Perawatan Pada Sistem Bahan Bakar (Fuel Oil System) Kapal TB.BLORO 10 Icuk Kurniawan; Mukhsin Al Amin; Arum Nurvitasari; Endah Wismawati
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2623

Abstract

- Main Engine is one of the important compartments on the ship which is located in theengine room. Has a function as a propulsion driver and as the main propulsion engine of theship. With such an important position, scheduling maintenance on the Main Engine is veryimportant to do. Because if the main engine is not running, then there will be no operation ofthe propulsion system on the ship and it will definitely be very detrimental to the ship owner.This final project attempts to answer these demands by creating a maintenance schedule forthe main engine fuel system. In addition, the total operating costs which consist of running,maintenance and downtime costs will also be taken into consideration in determining themaintenance time. In this research of the analysis of choosing the best type of maintenance totake, namely, preventive maintenance for non-return valve components, quick closing valves,fuel injection pumps, and gate valves. Corrective maintenance is recommended for the fuel oiltransfer pump, injector nozzle, and fuel filter components. The cost of maintaining allcomponents is taken from the cost of preventive maintenance. The biggest cost is the fuelinjection pump component in each repair cycle with an expected minimum total cost incurredfor reliability 0.6 of Rp. 25,650,000 and the smallest cost for the fuel filter component in eachrepair cycle with an expected minimum total cost incurred for reliability 0.6 of Rp. .5,617,520.
Penerapan Metode RCM (Reliability Centered Maintenance) Pada Sistem Bahan Bakar (Fuel Oil System) Kapal TB.BLORO 10 Mukhsin Al Amin; Nurvita Arumsari; Endah Wismawati; Icuk Kurniawan
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2624

Abstract

Main Engine is one of the important compartments on the ship which is located in theengine room. Has a function as a propulsion driver and as the main propulsion engine of theship. With such an important position, scheduling maintenance on the Main Engine is veryimportant to do. Because if the main engine is not running, then there will be no operation ofthe propulsion system on the ship and it will definitely be very detrimental to the ship owner.This final project attempts to answer these demands by creating a maintenance schedule forthe main engine fuel system. In addition, the total operating costs which consist of running,maintenance and downtime costs will also be taken into consideration in determining themaintenance time. In this research, scheduling of main engine maintenance is carried out usingreliability centered maintenance which is used to select, develop, and create alternativemaintenance strategies based on operational, economic and safety criteria. Based on thefailure analysis using Failure Mode Effect Analysis, several component failures wereidentified, such as the fuel injection pump (worn drive shaft, worn governor plunger, fuel gearpump lacking lubrication), injector nozzle (damaged nozzle tip, burrel plunger seal, M/Eperformance was not optimal ), gate valve (nut valve difficult to operate, disk valve has a leak,gasket on valve), fuel oil transfer pump (bearing wear, pump impeller corrosion, shaftcorrosion), swing check valve (crusted disk valve, valve gasket), fuel filter (dirty fuel filter),quick closing valve (crusted disk valve, gasket valve).

Page 6 of 11 | Total Record : 109

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