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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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Kajian Eksperimen Pengaruh Sudut Stagger Silinder Di Depan Returning Blade Terhadap Coefficient Of Power Turbin Angin Savonius Sudu Fin Dengan Profile Blade Myring n=1 Billy Yanuar Saputro; Emie Santoso; Priyo Agus Setiawan
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.v6i1.2662

Abstract

Savonius wind turbines are widely used for wind energy utilization eventhough theirperformance is considered lower than other types of turbines. In 3 previous studies, additionaldisturbance cylinder in front of returning blade and additional fin on blade could improve the turbineperformance but the increase was not optimum. Based on these problems, this experimental study usedone additional fin type myring n = 1 on the blade. Circular cylinders have a distance ratio of 340 mm,with various airspeed of 7 m/s, 6 m/s, 5 m/s, and various cylinder angles of 45°, 50°, 55°, 60°. Theexperiment was performed 12 times to determine the effect to coefficient of power (Cp) and coefficientof torque (Ct). The turbine best performance is obtained at a cylinder angle of 60° and a wind speed of6 m/s. The results are 0.394 for coefficient of power (Cp) and 0.688
Optimasi Konversi Daya Turbin Angin Melalui Pengaturan Tsr (Tip Speed Ratio) dan Jenis Turbin Reynaldi Aurel Fadiilah; 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.v6i1.2663

Abstract

Society is very dependent on fossil fuels, and currently Indonesia does not haveexcess oil reserves. According to the DEN, oil reserves will be exhausted in the next nineyears. As an alternative, wind turbines can be used. However, the factor hindering thisdeployment is the design of the wind turbines, which is lacking. MPPT is used in windturbines to optimize performance by determining the state of the wind turbine, thencalculating the power sampling algorithm, and then calculating the overall performance andefficiency of the wind turbine. State 1, Vci 1 m/s, Vr 6 m/s, and Vco 8 m/s provide the highestpower of the three. The H_Single Cp 0.47 and Tsr 4.5 turbines with a ratio of one rotor aresuitable for use in several areas on the island of Java. If you want a greater output powerfrom a wind turbine, then you can use a turbine with dual rotors, namely the HCR turbine,because it is capable of producing almost twice as much as a turbine with one rotor. Thearea with the most potential to generate electricity is in the Tuban area. Overall efficiencywith a maglev wind generator (model WKG-1000-200r) gives a Savonius efficiency of 18.2%,an H-Darrieus efficiency of 22.1%, an HCR efficiency of 63%, and an H-Single efficiency of42.3%.
ANALISIS SEAKEEPING DAN OPERABILITAS KAPAL PATROLI UNTUK PERBAIKAN SISTEM LAMPU ANCANG BANDARA TEPI LAUT Ikang Martin Trasnowo; Mardi Santoso; Sumardiono .
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.v6i1.2664

Abstract

The maintenance of the swaying light system requires fast handling to meet the proceduralneeds of aviation. Therefore it is necessary to carry out an in-depth analysis of seakeeping andoperability to reduce the risk of ship delays when needed when sudden swaying lights are repaired.Movements caused by external forces acting or sea waves will affect the comfort and safety of the crewand passengers of the ship itself. Ship movement response is a seakeeping parameter that must beconsidered to support the feasibility of ship design.In this final project, the seakeeping analysis processuses Maxsurf Motion software to generate ship movement values. The variations in the direction ofarrival of the waves used are 00, 450, 900, 1350, and 1800 at a speed of 20 knots. Meanwhile, variationsin significant wave height are 0,05; 0,3; 1; 2; dan 3,3 meter and wave period used are 5,6; 6,8; 7,5;10; and 11 second and ship shipping routes according to Natuna waters wave data from BMKG.Calculations are performed using Maxsurf Motions Advance software.The results that can beconcluded in this final project are the percentage of ship operability based on seakeeping criteriaaccording to Olson 1978 and the U.S Coast Guard where 94,06% is operable and 5,94% downtime. Inaddition, it can also be concluded that the operational wave height that is permitted and safe for shipssailing in the waters of the Natuna Sea is 3 meters.
Parametric Studi Desain Kapal Patroli Fiber Reinforced Plastic untuk Perawatan Lampu Approach Bandara di Kepulauan Natuna Naufal Salehtra Ghalib; Mardi Santoso; Aang Wahidin
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.v6i1.2665

Abstract

The condition of Indonesia as an island nation that has many islands with potential for tourismand investment in the field of natural resources is abundant. The construction of airports in the islandsis an effort to support this potential, but due to limited land, some airport equipment that is importantand not eliminable is placed in the water area. Patrol boats are very important, to assist in airportoperations, especially for maintenance of equipment placed in the waters. So a patrol boat with FRP(Fiberglass Reinforced Plastic) material was designed. From the research conducted, the ship is designedto have a speed of 20 knots with the main size of the ship, namely 13 meters long, 3.6 meters wide, 1.5meters high, 0.6 meters of water level obtained from the ratio comparison of existing comparison ships.From modeling using the size of the ship that has been obtained, the linesplan as found Picture 2, andthe general plan as found in Picture 8 are also obtained after the calculation stages. The patrol boat isdesigned using 2 Yanmar 6LY400 engines, with a ZF 115 ATS gearbox and a B5-105 type propeller, fromthe propulsion system the ship can reach a speed of 21.31 knots at 100% engine power. The patrol boatin this study is analyzed for stability with eight conditions where all conditions meet the rules and criteriaof HSC 2000 ANNEX 8.
PENGARUH CAMPURAN BAHAN BAKU BIODIESEL (MINYAK KELAPA SAWIT, MINYAK JELANTAH, MINYAK LEMAK SAPI) PADA PERFORMA MESIN DIESEL 4 LANGKAH Zufar Ali; Subagio So'im; 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.v6i1.2666

Abstract

The continuous use of solar, as an abiotic natural resource in all sectors, will eventually bedepleted, necessitating an alternative fuel such as biodiesel. Biodiesel is a renewable fuel commonlyderived from biological sources (vegetable and animal) and is environmentally friendly. Potentialraw materials for biodiesel include palm oil, used cooking oil, and animal fat. In this research, theseoils are converted into biodiesel through esterification and transesterification processes. Then, acombination of the three raw materials is formulated (multi-feedstock biodiesel), which will beblended with HSD (Pertamina dex) to create B20, B35, and B100 biodiesel blends. These biodieselfuels will be tested in a four-stroke diesel engine with different loads of 1000 watts, 2000 watts, and3000 watts, at various RPMs of 900, 950, 1000, and 1050, to obtain performance data such as power,torque, and fuel consumption. From the conducted tests, the characteristics of flash point, density,and viscosity of B100 biodiesel has met the biodiesel quality standards according to SNI (IndonesianNational Standard). B100 biodiesel has the highest power and torque values, while Pertamina Dexexhibits the most optimal specific fuel consumption value.
DESAIN DAN ANALISIS SISTEM PENDINGIN KAPAL TRADISIONAL PENANGKAP IKAN 30 GT PANTAI UTARA LAMONGAN Dimas Bayu Aji S; M Anis Mustaghfirin; 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.v6i1.2667

Abstract

There are several methods to cool fishermen's catches, namely the full ice blockmethod, the full refrigeration system method, and the combined ice method andrefrigeration system. Among these methods, the full ice block method is the most commonlychosen method by traditional fishermen because the use of this method is consideredcheaper than other methods. However, in terms of the quality of the fish cooled by thismethod, it is lacking., In this study a calculation of the cooling load of the hold is carriedout which will produce a cooling system using RSW (Refrigerated Seawater) with thesoftware method and will produce a suitable RSW design for the Ijon-in fishing boat hold.In addition, the calculation of the economic aspects of the use of RSW will be carried outcompared to conventional systems. The results of this study found that the coolingrequirement for the hatch was 10.9847064 Kw, therefore the compressor used had acooling capacity of 13.35 kW. Then we get a condenser design with a shell diameter of 350mm and a tube diameter of 25.4 mm and an evaporator design with a shell diameter of 600mm and a tube diameter of 12.7 mm.
ANALISIS PERFORMA SISTEM PROPULSI PADA KAPAL SPOB AKIBAT PERGANTIAN GEARBOX Wendhy Yozam; Abdul Gafur; Subagio Soim
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.v6i1.2668

Abstract

In this final project, the performance of the propulsion system on the ship is analyzed SPOB.Sultan Samudera. With This is done to minimize errors in the selection or determination of gearboxesand other engines. The methods used are Engine Propeller Matching and Speed Power Predictionwhich will be compared with the sea trial report. Calculation of ship resistance is done manually usingthe Holtrop method at a speed of 10 knots, the results of engine propeller matching are used todetermine the Match Point obtained, based on the calculation of the resistance obtained by the ship'sresistance value Rt = 91.045 Kn. The power requirements obtained are 1658,000 HP on the 2 MainEngines used and 817,694 HP per engine based on the main engine that has been determined. Then thePropeller type is Ka 4-70 with P/Db 1.100 meters and propeller efficiency (?) 0.561, the propeller doesnot cavitate and the match point in rough hull conditions against Gearbox Ratio 7.42: 1 occurs at88.96% at 1900 rpm while at Gearbox Ratio 5: 1 rough hull conditions occurred at 290.74% at 1900rpm, then in the Speed Power Prediction conditions compared to the Sea Trial "Against the Current"at a speed of 8.8 knots, the match point was obtained at 1600 rpm at 8.1 knots, while at Gearbox Ratio5: 1 with a speed of 8.8 knots obtained a meeting point at 1160 rpm engine speed at 6.4 knots withknown Sea Trial results, so the Gearbox Ratio of 7.42: 1 is quite close to the actual data owned by thecompany with the calculations obtained.
Analisis Pengaruh Tipe Nozzle dan Tip Clerance terhadap Kinerja Propeller K-Series menggunakan Metode Computational Fluid Dynamics (CFD) Mohamad Eko Kurniawan; Agung Purwana; Abdul Gafur
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.v6i1.2669

Abstract

Many innovations have been developed in the shipbuilding industry, such as the use of waterjetand azipod propulsion systems. However, these options are considered less effective. FInally the shippingindustry has innovated by adopting ducted propeller technology. This Final Year Project aims to conductfluid flow simulation tests on the propeller with variations in nozzle sizes, namely 19A and 37 and tipclearance values of 20 mm, 30 mm, 40 mm, 50 mm, and 60 mm. The analysis is performed usingComputational Fluid Dynamics (CFD) to obtain values for thrust, torque, and efficiency. The simulationresults, the smaller tip clearance, the greater resulting thrust and torque values, namely 61874 N and 13128Nm on models with a 20 mm tip clearance. Then, the greater value of thrust or torque, the better performanceof the propeller. The largest thrust value was obtained, namely 61874 N and the largest torque, namely 13128Nm. Thus, the propeller has good performance when paired with nozzle 37. For efficiency, the better theperformance of the propeller with the recommended nozzle type and tip clearance is 37 nozzle and 20 mm tipclearance with the greatest efficiency value is at J 0.6 of 0.686.
ANALISIS PENGARUH MULTI-FEEDSTOCK BIODIESEL TERHADAP PERFORMA FOUR-STROKE DIESEL ENGINE DENGAN LSCS PISTON Faruq As'ary; Edi Haryono; 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.v6i1.2670

Abstract

Biodiesel emerges as a promising solution that can be pursued domestically. This fuel canbe produced from available vegetable oil and animal fat resources. In the context of this research, thefocus is on creating multi-feedstock biodiesel from palm oil, corn oil, and coconut oil. Subsequently,blends of these various biodiesel types are mixed with Pertamina Dex to produce fuels in the forms ofB20, B35, and B100. Tests were conducted on a four-stroke diesel engine utilizing the LSCS piston.The tested variables encompassed engine loads at levels of 1000 Watts, 2000 Watts, and 3000 Watts,as well as engine speed variations at 900 rpm, 950 rpm, 1000 rpm, and 1050 rpm. Within this context,the research's objective was to examine the characteristics of the applied biodiesel and its impact onengine performance. The test results indicate that biodiesel with a B100 blend is capable of meetingIndonesian National Standard (SNI) requirements for flash point, cetane number, calorific value,density, and viscosity. Furthermore, in terms of engine performance, biodiesel with a B20composition has proven to provide optimal results in generating the required power and torque.Moreover, B20 also demonstrates the best performance in achieving the desired gsfc value.
KAJIAN NUMERIK PENGARUH PROFIL SUDU TERHADAP KINERJA TURBIN HYDROKINETIC DARRIEUS SEBAGAI WAVE AND CURRENT ENERGY CONVERTER Muchammad Fajar Muttafaq; Burniadi Moballa; 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.v6i1.2671

Abstract

New and Renewable Energy (EBT) resources in Indonesia are still not fully utilized,especially from the the maritime sector. Currently, the EBT mix has only reached 11.2 percent, stillbelow the 2025 energy mix target of 23 percent and the potential for EBT which reaches more than 400Gigawatts (GW) has only been utilized at 10 GW or 2.5 percent of the total reserves. (EBTKE PublicRelations, 2021). The form of wave and current energy is one of the new renewable energies from thesea which has the potential to be used as electrical energy with very large energy reserves. In this FinalProject research, a 2D modeling simulation based on CFD (Computational Fluid Dynamics) wascarried out on the Darrieus hydrokinetic turbine as an ocean wave energy converter device.Simulations were carried out to analyze the effect of the blade profile on the Torque Coefficient (Ct)and Power Coefficient (Cp) values. In this study, wave data from one of the South Java Waters wasused. The highest Coefficient of Torque (Ct) and Coefficient of Power (Cp) values were obtained forthe NACA 0021 symmetrical blade profile with a variation of TSR = 0.25 and ? = 0.5, namely Ct =0.335 and Cp = 0.167 while for the asymmetrical blade profile NACA 63-415 with a variation of TSR= 0.25 and ? = 5 for Ct = 0.263 and Cp = 0.132

Page 9 of 11 | Total Record : 109

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