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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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Perhitungan Sisa Umur Preheater Tube HRSG Unit 1.1 PLTGU PT. PJB UP Gresik Yoga Prasetyawan Abdi; Prasojo Budi; Wismawati Endah
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.626

Abstract

Heat Recovery Steam Generator (HRSG) is a tool that serves to increase the efficiency of Gas Turbine. HRSG works by utilizing exhaust gases from Gas Turbines to produce steam which will be used to drive Steam Turbine. In the HRSG unit is often found the problem of leakage HRSG tube. Preheater tubes are part of the most frequently experienced leaked HRSG tubes. In this study discuss the calculation of remaining life of preheater tube. To find the corrosion rate that occurs in the preheater tube obtained through calculations based on the results of thickness test and immersion test. Immersion Corrosion Test uses specimens of ST 37.8 with a surface area of 27.234 cm2, the variables in this test are water temperature 90 ° C, 97 ° C, and 104 ° C. Immersion Test is done within 24 hours. Immersion test result with variation of water temperature lifetime value obtained is: 4,315 years at temperature 90 ° C, 3,437 years at temperature 97 ° C, and 1,075 years at temperature 104 ° C. Based on thickness test The average lifetime value of preheater tube inlet is 13,645 years and 40,003 years for preheater outlet tube.
Analisa Pengaruh Bulbous Bow terhadap Tahanan Kapal dan Konsumsi Bahan Bakar pada Kapal Perintis 2000 GT Maruto Prijono Agil; Antoko Bambang; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.631

Abstract

One to improve the performance of the ship is change the optimal shape of bow and stern, so thatship resistance can be reduced. Many studies discuss innovations hull shape in order to get the optimaldesign, in order to obtain the hull shape especially the bow shape that has the smallest value of totalresistance. Therefore, this study will discuss the design of the bulbous bow at coaster ship 2000 GT withsome variety of bulbous bow shape and calculation of resistance and fuel consumption aimed to obtainingthe bow shape with the smallest total resistance value and efficient fuel consumption. 3D modeling of bowand calculation of ship resistance using Maxsurf Software. Variations of bulbous bow design that have beenmodeled there are 3 models of bulbous bow type Δ, bulbous bow type O, and bulbous bow type V. Theresults of the resistance calculation on the coaster ship 2000 GT without bulbous bow using the maxsurfsoftware obtained for 186.6 kN, ship resistance value on bulbous bow shape Δ obtained 144.4 kN, andvariation of bulbous bow type V has the highest ship resistance value of 153.9 kN. Furthermore, thecalculation of fuel consumption on the coaster ship 2000 GT obtained results of 49.884 tons, variation ofbulbous bow type Δ of 40,79 tons, variations of type O bulbous bow of 42.79 tons, and variation of bulbousbow type V at 45.86 tons.
Kajian Numerik Tata Letak ventilator Ruang Kamar Mesin Di Kapal Coaster 2000 GT Prasetyo Nugroho Agung; Muhadi Eko Prayitno Muhammad; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.639

Abstract

HVAC (Heat Ventilation & Air Conditioning) is it most important for the vessel. Engine room is very important part from the vessel. Because there are have main engine as engine driven and auxiliary engine as complement for the systems. From Biro Klasifikasi Indonesia rules said : if must be 45 ⁰C for every vessel’s ventilation at engine room. Design at engine room must be know how efficients of ducting’s design and how about heat distribution of every part at engine room, and this design can help for air change from exhaust air and keep air distribution to be constant. From this experients we are know if the temperature at ME Room is 47 ⁰C (exceed from BKI’s standart) and 36 ⁰C at AE Room. So, we need to redesign for this condition. From the result we are know if recondition at ME Room change to be 39 ⁰C. ventilation air position and ducting track design very important to get velocity air distribution who intake in engine room and keep the temperature to be constant (not exceed 45 ⁰C).
Analisa Performa Propeller Pada Kapal Ferry 5000 GT Arizona Pradhika Raqih; Agus Setiawan Priyo; Nur Budiyanto Ekky
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.641

Abstract

Nowadays, the development of propeller design planning has developed quite rapidly. Series propellers on the market are not only B-Series, Kaplan Series, AU Series, Gwan Series and SK Series. Some series propellers have characteristics of propeller design. Now there are many new series of propeller on the market which is the result of a variety of propeller series that have been there before. With technological advances, software assistance can simulate a new series of propellers with a sufficiently short period of time to get the desired propeller performance results. This research discusses the performance of B-series propellers in open water with variation of rake angle from -3 °, -2 °, -1 °, 0 °, 5 °, 10 ° and 15 ° also variation of skew angle 12 ° and 22 ° using a computational fluid dynamic method (CFD) approach. The purpose of this research is to analyze propeller model to get the highest thrust propeller model, lowest torque, highest efficiency, highest static pressure and highest velocity.
Perancangan Sistem Refrigerasi Untuk Blast Freezer Pada Kapal Ikan 200 GT Hadi Yamlean Yohannes; Anis Mustaghfirin Muhammad; Dwijati K.R.A Daisy
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.650

Abstract

Cold storage system of blast freezing type on 200 GT fishing vessel was designed by Shipbuilding Polytechnic Institute Surabaya (PPNS). In the last final task, the cooling system was not designed in detail so in this final project the blast freezer acceleration on vessel is carried out in detail. The design is started by calculating heat load. Then, it is continued by making pipe design, evaporator design and condenser design including compressor selection. Detailed engineering drawing on the refrigeration is also carried out to optimize the use of power and loading space. The result is the need of a compressor power is 23,27 Kw, the condenser power is 61,39 Kw and the 2 evaporator power is 18,985 Kw. The sum of condenser pipe is 360 and 2 evaporator pipes is 274 with 1,5 meters long. They are designed for the condenser and evaporator. The sum of fin evaporator is 591. The type of condenser is shell and tube. The evaporator type is finned tube. The diameter of the condenser is 423.88 mm with 1.5 meters long and the 2 evaporators are 1.5 meters x 0,3723 meters x 0,8455 meters each.
OPTIMASI RESCHEDULE PEMBANGUANAN KAPAL KELAS 1 KENAVIGASIAN (KN. BACAN) DI ORELA SHIPYARD DENGAN LINIER PROGRAMING Rosita Elen; Poernomo Heroe; Arumsari Nurvita
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.651

Abstract

In a shipyard, shipbuilding process is inseparable from scheduling determined by the company. Although in the course of time a project usually meet obstacles in the process resulting on delays in building process and ship delivery. Pert Method (Project Evaluation Review Technique) is used in a project to find the critical path on network diagram in order to make time configuration becomes more effective. Furthermore crashing method is used by adding work hours to lessen lateness and excessive project cost. Duration accelerating used on critical path track, then cost minimilization and also linear programming time optimization completed by simplex approach on solver. The results obtained from time-planning calculation using network planning with Project Evaluation Review Technique (PERT) is applicable for the company on time and cost because the normal time which is 924 days could be crashed for 11 days into 913 days, increasing the efficiency on time and costs, the normal cost is about Rp Rp. 1,747,940,000 and the costs after crashing about Rp. 3,387,463,353. Results from Simplex LP (Linear Programming) for post-crashing duration is the optimum time because there is no change on solution’s solver in which the time is constant. The cost minimalization generated by simplex LP is Rp 6,046,912 day from crashed works. For a total duration of 11 days the minimum cost incurredis Rp. 66,516,03.
Analisa Pengaruh Variasi Bentuk Buritan Kapal Terhadap Hambatan Total Pada Kapal Twin Screw Propeller Menggunakan Metode CFD Zulqurna'in Rizal; Santoso Mardi; Julianto Eko
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.660

Abstract

One aspect that needs to be reviewed in improving the performance of the ship is the optimal bow and stern form so that the total resistance of the ship can be minimized. In the field oc Naval Architecture, it is necessary to start the innovation to test the hull forms, especially stern. which has the smallest resistance. In this study we discuss the testing of the stern model on the 5000 GT Ferry ship with a variety of stern shapes and speeds using the CFD method. The aims to get the stern shape with the smallest total resistance value. Stern 3D modeling and calculation of ship resistance using the Maxsurf software. Analysis conducted using the Computational Fluid Dynamic (CFD) method approach, it can provide an overview of fluid distribution that occurs with predetermined conditions and variations. From the CFD simulation results, at a speed of 15, 17, and 21 knot obtained a sternshaped ship that has the smallest total resistance value, that is (without sternbulb and hanger), 143,633 kN at a speed of 15 knot, 281,333 kN at a speed of 17 knot and 433,333 kN at 21 knot. While at the speed of 19 knot the model that has the smallest total resistance value is model 3 (with hanger), with a value of 374,467 kN.
Studi Numerik Pendinginan Udara Pada Kandang Sapi Kapal Ternak Menggunakan CFD (Computational Fluid Dynamic) Puruhitno Pambudi Rohimawan; Agus Setiawan Priyo; Endri Kusuma George
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.667

Abstract

Livestock vessels are used to distribute and transport livestock from one place to another. Similar research has been carried out by making cattle models in the beams which are considered to make air distribution less evenly. This research will be carried out simulation use 3D cattle’s model. This simulation aims to determine the distribution of air temperature, air velocity, air pressure and air flow patterns uses a CFD (computational fluid dynamic) simulation method. Based on the simulation result, the average of air temperature distribution is 300oK or 27oC at cattle pen A and B. The average of air velocity distribution is 0,669 m/s at cattle pen A and 0,7 m/s at cattle pen B. The average of air pressure distribution is 0,211 pa at cattle pen A and -0,267 pa at cattle pen B and the airflow pattern is around a model of cattle. The distribution of air temperature at 300oK or 27oC by RH (relative humidity) 70%-90%, THI (Temperature Humidity Index) shows in the alert condition between 75 – 78. So, The cattle pen A and B have not good the comfort zone and make a cattle to be mild stress. Because of it, the air temperature has to be down by adding a cooling instrument.
ANALISA KEKUATAN MEMANJANG KAPAL PONTON LOA 100,5 METER Widyo Nugroho Ridlo; Dimas Endro Witjonarko Raden; Gafur Abdul
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.678

Abstract

Pontoon is ships which is carrying material on their deck. Usually it is not self-propelled vessel. So it must be towed by tug boat. One of important things in ship’s transportation is an analysis of its longitudinal strength. It is very important because we have to make sure the ships will be safe when sailing. In this analysis, we have calculate maximum moment that occurs in the ships while the ships is in hogging and sagging condition. There are two method to analize this case, they are calculation and simulation in Maxsurf software. And the result is the maximum moment that occurs is 19.729,14 ton.m from calculation in hogging condition and -26,398 ton.m from simulation in sagging condition.
Desain Sistem Pendingin Inlet Air Turbin Gas Menggunakan Sistem Refrigerasi Absorpsi pada PLTGU Burhanul Mustofa Mochamad; Endri Kusuma George; Nur Budiyanto Ekky
Proceedings Conference on Marine Engineering and its Application Vol 1 No 1 (2018): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v1i1.687

Abstract

Gas and steam power plant (PLTGU) is a combined cycle between PLTG and PLTU. The parameters to be achieved in order for the PLTG system to work optimally are regulated in ISO 39772. The gas turbine can work optimally if the air temperature enters the compressor 15ᵒC, at 60% moisture and at a pressure of 101.3 kPa. But data from BMKG condition of environment in Gresik mean at temperature 32ᵒC at relative humidity 65% to 85%. Therefore a cooling system is required to cool the inlet air gas turbine. On the other hand the exhaust gas temperature from HRSG still high and can be utilized as the energy source of the absorption cooling system. From the results of balanced energy calculations obtained some results such as the amount of exhaust gases from HRSG of 52952 kW and the power required to cool the inlet air of 22365.65 kW. The result of exergy calculation obtained some results the biggest destroyed of energy in combustor amount of 287369 kW. Five absorption cooling machine LG type WC2N135 is arranged in parallel to achieved the power. When the turbine inlet temperature is 32°C the power is 125251,127 kW otherwise turbin inlet temperature is 15ᵒC the power is 139986,53 kW.

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