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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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Kajian Eksperimen Pengaruh Variasi Diameter Stagger Silinder Di Depan Returning Blade Turbin Angin Savonius Overlap Tipe Myring N=1 Nurman Dwi Harmaji; Priyo Agus S; Projek Priyonggo Sumangun
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.v6i1.2635

Abstract

Based on previous research, the performance of Savonius Overlap wind turbine withadditional cylinders had increased but it could still be improved to reach the highest performance.Based on this condition, this experiment was carried out by using a Savonius wind turbine bychanging blade with Myring n = 1 and adding an Overlap Ratio of 0.3 to the turbine blade. Itsdiameter and height are 40 cm. The stagger cylinder is placed with a distance ratio of S/d 1.7 anduses various diameter ratio 0.4 0.5 0.6 and 0.7. The wind speed is arranged by varying the speedof 5 , 6 and 7 m/s. This experiment was conducted to determine effect of additional circularcylinder to Coefficient Power (Cp) and Coefficient Torque (Ct). The final result shows that thebest performance increase occurs in the variation of interfering cylinder diameter ratio ds/D = 0.4with a wind speed of 6 m/s. The increase in the Coefficient Torque (Ct) is 9.58% and theCoefficient Power (Cp) is 21.56% for the Savonius Myring wind turbine n = 1 Overlap withoutinterfering cylinders.
Desain Dan Analisis Kekuatan Struktur Kontruksi Kapal Patroli 13 Meter Menggunakan Finite Element Method (FEM) Rahmat Rosid; Mardi Santoso; 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.v6i1.2636

Abstract

In the process of maintaining security and maintenance of the approach lightingsystem (ALS) at the airport area in Natuna which was built on the Natuna coast. So weneed a patrol boat that can meet the criteria in terms of the strength of the ship's structureto maneuver properly and accept internal and external loads. Structural capabilities thatare sufficiently safe are permitted according to BKI rules for ships made of fiberglassreinforced plastic. Case of slamming loading, it will be analyzed whether it is sufficientlysafe in terms of the strength of the construction structure on the 13-meter patrol boat thatloading may occur due to ship operations in the area around the airport. The initialcalculation is to calculate the scantling with a scantling weight of 2,226 tons and then drawthe construction in accordance with the lines plan and general arrangement of the 13 meterpatrol boat. Followed by the provision of a static load from slamming loading of 15,237KPa when the ship is at full speed of 20 knots to find out the response from the ship'sconstruction made of FRP. The value analyzed is the maximum stress (von mises) using theFinite Element Method (FEM) with static structural analysis and slamming loading in theform of pressure on the software as the method chosen in this study. Then raises the stressvalue in the ANSYS software, the maximum stress value that occurs in the construction is13.808 MPa and from this maximum stress value the safety factor value can be calculatedto find out how safe the ship's construction is if it is given a slamming load on the ship. Thesafety factor value in this study is 7,097. From the value of the safety factor it is knownthat the ship is still able to accept slamming loads at full speed.
Analisis Unjuk Kerja Four Stroke Diesel Engine Menggunakan Bahan Bakar Multi-Feesdstock Biodiesel Menggunakan (Minyak Kelapa Sawit, Minyak Kelapa, Minyak Jagung) Sugiantoro .; Muhammad Shah; Edi Haryono
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.v6i1.2638

Abstract

The massive increase in the world's population has led to an increase in fuel consumptionin the world. The most popular energy still relies on fossil fuels today, which are depleting the earth'sreserves, so an alternative fuel is needed, namely biodiesel. Biodiesel has the advantages of beingbiodegradable, non-poisonous, has low emissions, and is renewable in availability. The biologicalmaterials that can be used as biodiesel are palm oil, coconut oil, and corn oil. In this research, thethree feedstocks were blended into a composition (multi-feedstock biodiesel) which was mixed withHSD (Pertamina dex) to become B20, B35 and B100 fuels. The fuels were tested on a four-strokediesel engine with 1000 watts, 2000 watts and 3000 watts lamp loading with engine speed variationsfrom 900 rpm to 1050 rpm. From the test results, it was found that the performance results in theform of power, torque, and generator-specific fuel consumption values were the most optimal, namelyB100 fuel. From this research, the most optimal percentage of fuel mixture is 100% multi-feedstockbiodiesel or pure biodiesel.
Perancangan Ulang dan Analisis Reliability Lubricating Oil (L.O.) Cooler Tipe Plate Heat Exchanger Untuk Penggantian Heat Exchanger Tipe Shell and Tube Pada KM Spil Rumi admin CMEA; Taufikur Rahmadani
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.v6i1.2639

Abstract

There is a case on KM Spil Rumi in the form of Lubrcating Oil (L.O.) cooler damaged due to leakage. The existence of this case is the basis of this research to find an alternative replacement with a redesign. The methodology used in this research uses LMTD (Log Mean Temperature Different). In addition to designing heat exchangers, this study also analyzed reliability. Based on the calculation results, it is found that the shell and tube heat exchanger has a better overall convection coefficient value with a value of 538.98 W/m2.C compared to the plate heat exchanger with a value of 459.19 W/m2.C. Although the overall convection coefficient value of the shell and tube heat exchanger is greater, the shell and tube heat exchanger has an overdesign value that is too large at 74.42%. Therefore, the plate heat exchanger with an overdesign value of 31.39% has a higher effectiveness value with a value of 64.3% compared to the shell and tube heat exchanger with a value of 46.4%. However, the reliability value of the shell and tube heat exchanger has a longer time until the component is damaged with 64 years than the plate heat exchanger with 6.5 years.
ANALISIS OPTIMALISASI NILAI THRUST, TORQUE DAN EFFICIENCY PROPELLER B SERIES DAN KAPLAN SERIES PADA STUDI KASUS KAPAL PENCALANG 15 GT MENGGUNAKAN METODE CFD Muhammad Iqbal; Abdul Gafur; Bambang Antoko
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.v6i1.2640

Abstract

Pencalang is a traditional sailing ship used as a merchant ship. Along with the times,Pencalang changed its function to become a patrol boat with the addition of a motor as its drivingforce. In the traditional wooden ship revitalization project, propeller selection is important because theship uses a sail and motor system. This research analyzes the use of Kaplan propeller types to optimizethrust, torque, and efficiency where currently the propeller used for Pencalang ships is type B-series.The selection of the Kaplan propeller to be analyzed is based on the diameter that matches theavailability of propeller space on the propeller ship or < Dpropeller B-series g. The selection of kaplanpropellers resulted in kaplan types K4-55 and K4-70 with diameters of 0.659 and 0.619, respectively.The B-series and kaplan series propellers that have been selected are then analyzed using modelingsoftware and simulation software that has calculated its error using MAPE with the result of an error< 10%. The simulation results in the software show that the Kaplan series propeller can be used as anoption for the type of propeller that can be used on Pencalang if a propeller replacement will be carriedout later, because with a smaller diameter compared to the B-series propeller it will produce greaterthrust and torque. The Kaplan series propeller that produces the highest thrust and torque is K4-70with a maximum thrust value of 6966.76 N and a maximum torque of 978.977 Nm.
Analisis Performa Lubricating Oil (L.O.) Cooler Tipe Plate Heat Exchanger Untuk Penggantian Heat Exchanger Tipe Shell And Tube Pada KM Spil Rumi Adam Aryo Kirono; George Endri Kusuma; Muhammad Shah
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.v6i1.2641

Abstract

There is a case on KM Spil Rumi in the form of Lubrcating Oil (L.O.) cooler damaged due to leakage. The existence of this case is the basis of this research to find an alternative replacement with a redesign. The methodology used in this research uses LMTD (Log Mean Temperature Different). Based on the calculation results, it is found that the shell and tube heat exchanger has a better overall convection coefficient value with a value of 538.98 W/m2.C compared to the plate heat exchanger with a value of 459.19 W/m2.C. Although the overall convection coefficient value of the shell and tube heat exchanger is greater, the shell and tube heat exchanger has an overdesign value that is too large at 74.42%. Therefore, the plate heat exchanger with an overdesign value of 31.39% has a higher effectiveness value with a value of 64.3% compared to the shell and tube heat exchanger with a value of 46.4%.
KAJIAN NUMERIK PENGARUH PENAMBAHAN ENERGY SAVING DEVICE JENIS WAKE EQUALIZING DUCT PADA KINERJA PROPELLER Muhamad Andika Prasetyo; Burniadi Moballa; Daisy Dwijati Kumala Ratna
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.v6i1.2654

Abstract

In recent years, research in the marine field has focused on reducing exhaustemissions by increasing fuel efficiency and carbon dioxide emissions. Reducing carbonemissions in the industry can be achieved by using energy-saving devices that also functionto reduce fuel consumption. This device also serves to reduce frictional resistance at theship’s aft so that energy losing impact to fuel consumption can be prevented. Based on thiscondition, this study uses an wake equalizing duct type with symmetrical and asymmetricalNACA variations. The CFD (Computational Fluid Dynamics) method is used to analyze thecoefficient of thrust and coefficient of torque. The duct is added to increase the value of bothcoefficients. The analysis without NACA variations results thrust coefficient value of 0.1442and torque coefficient value of 0.01539. The NACA 0015 variation produces thrustcoefficient value of 0.215747279, torque coefficient value of 0.020711813 and its efficiencyincreases 10%. NACA 4412 variation produces thrust coefficient value of 0.208392027,torque coefficient value of 0.020178827 and its efficiency (?o) increases by 11%. Theconclusion is additional wake equalizing duct is able to align the flow at the ship’s aft so thatit can minimize the occured turbulent current.
PENGARUH MULTI-FEEDSTOCK BIODIESEL (MINYAK KELAPA SAWIT, MINYAK ZAITUN, MINYAK CANOLA) TERHADAP UNJUK KERJA FOUR STROKE DIESEL ENGINE Julian Wahyu Perdana; Edi Haryono; 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.v6i1.2657

Abstract

Biodiesel is a renewable fuel and is generally made from biological sources (vegetable and animal)and is environmentally friendly. Raw materials that can be used as biodiesel are palm oil, olive oil, andcanola oil. In this research, the mixing of the three raw materials into a composition (multi-feedstockbiodiesel) was carried out through the process of mixing biodiesel with HSD to produce B20, B35 andB100 fuel. This fuel will be tested on a four stroke diesel engine with a 1000 watt light load, as well asdata collection with variations of 900 rpm, 950 rpm, 1000 rpm and 1050 so that the most optimal testresults for power and torque are obtained, namely B100 while for gsfc test results the most optimal fuelis obtained, namely B35.
PERENCANAAN SISTEM PROPULSI ELEKTRIK PADA FAST PATROL BOAT 28 METER Muhammad Ferdiansyah Wibowo; 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.v6i1.2660

Abstract

Selection of the propulsion system is one of the basic considerations in designing a ship. Toreduce fuel use, the researchers re-planned the mechanical propulsion system into an electricpropulsion system on the ship. The research object is a 28 M fast patrol boat with a speed of 25 knotsin full (MCR) conditions, 22 knots in patrol conditions and 15 knots in economical conditions. Theelectric motor used is a PRAXIS DC EMG-820d-7751 motor with 1457 kW of motor power suppliedfrom a battery that is charged from the shore port. Simulation using MatLab by modeling the motorand propeller to find the value of torque, thrust and advance speed. The power prediction between themotor and the propeller in the graph below can be seen that the motor power can match the powerrequired by the propeller in the condition of 52,388 % power and 100 % speed of the DC motor byadjusting the input voltage to the motor so that it affects the motor speed. The speed of the ship canreach 25 kNots, namely in clean hull conditions of 25 kNots and in rough hull conditions it does notmeet the speed requirement of 24 kNots
Analisis Perbandingan Distribusi Kecepatan Angin Untuk Mengetahui Probabilitas Kecepatan Angin di Pulau Jawa I Made Putra Ananta W; Mardi Santoso; Mohammad Abu Jami'in; George Endri Kusuma; Didik Sukoco
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.v6i1.2661

Abstract

- Wind speed is the movement of air from areas of high pressure to areas of lowpressure. As the use of electric energy increases due to the growing human population in aregion, there is a need for renewable energy sources to convert renewable energy intoelectricity. Wind energy is highly potential if utilized, considering its relatively low utilizationfor electricity generation in Indonesia. In the initial stage of using wind energy for electricitygeneration, data on the wind potential of a region is required, thus an analysis of wind speedin several areas on Java Island is necessary. The wind speed data in this Final Projectincludes several regions in the Java Province, namely: Bandung, Banyuwangi, Bekasi,Gresik, Kudus, Malang, Semarang, Surabaya, Surakarta, and Tuban. The method used inmodeling wind speed involves the Weibull distribution, Rayleigh distribution, and Gammadistribution. Goodness-of-fit tests are applied to examine the best probability functions ofeach distribution to be analyzed. The distribution that meets the criteria of Coefficient ofDetermination, Chi-Square, and Root Mean Square Error is the Weibull distribution, asevidenced by the probability plots of the Weibull distribution, which closely match the actualdata from various regions. Areas with potential for wind energy to be converted intoelectricity are evaluated based on the percentage of wind speeds exceeding 2 m/s. The areaswith the highest potential are Tuban with a percentage of 56.89%, Malang with 56.71%, andBandung with 50.20%.

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