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Journal : Proceedings Conference on Marine Engineering and its Application

STUDI EKSPERIMEN MODIFIKASI RASIO KOMPRESI PADA 4-STROKE CARBURATOR SI ENGINE DENGAN DUAL-FUEL SYSTEM BENSIN-UAP ETANOL. Zainul Mujib; George Endri Kusuma; Mardi Santoso
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Abstract

Bahan bakar yang semakin berkurang maka dalam penelitian ini membahas tentang dual fuel system dimanaalternatif bahan bakar yang akan digunakan adalah etanol E98, dikarenakan nilai oktan etanol sangat tinggi makaperlu modifikasi pada rasio kompresi karena nilai oktan yang tinggi memerlukan rasio kompresi yang tinggi juga, agartidak terjadi adanya knocking, jadi pada pengujian kali ini akan dilakukan penambahan rasio kompresi dari kompresistandart mesin 9:1, CR 10,5:1 dan CR 11,5 sedangkan penambahan uap etanol pada penelitian ini di modifikasikandengan bukaan katup yaitu bukaan 0°, 30°, 60° dan 90°. Menaikkan kompresi rasio terdapat beberapa cara dimanasalah satunya dengan metode dom piston seperti yang akan dilakukan pada penelitian ini. Penelitian dual fuel yangmenggunakan etanol sebagai bahan bakar alternatifnya banyak dilakukan akan tetapi terjadi penurunan daya padamesinnya, maka pada penelitian ini diharapkan akan mendapatkan hasil nilai daya yang lebih bagus atau optimaldalam pembakaran. Dari penelitian yang telah dilakukan dengan penambahan rasio kompresi dan masuknya uapetanol yang sudah di atur dengan bukaan valve, maka didapatkan daya maksimum rasio kompresi standartdidapatkan 9,3 HP pada RPM 8000 bukaan katup 90° dan didapatkan torsi maksimum 9,7 N.m pada bukaan katup90° di RPM 6000, sedangkan pada CR 10,5:1 didapatkan daya maksimum 9,5 HP pada bukaan katup 90° di RPM 8000dengan torsi maksimum sebesar 9,41 N.m pada RPM 5500 bukaan katup 0°, pada variasi rasio kompresi terbesaryaitu 11,5:1 didapatkan daya maksimum sebesar 9,7 HP di RPM 8500 dengan bukaan katup 90° dan didapatkan torsimaksimum 9,79 N.m dengan bukaan katup 60° pada RPM 6000, jadi dapat disimpulkan variasi terbaik rasio kompresipada pengujian ini terdapat pada CR 11,5:1 dan bukaan katup 60° karena didapatkan daya maksimum terbesar.
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 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%.
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.
Co-Authors Aang Wahidin Adityo Pratomo Putro Afifah, Rizqi Nur Agustina Merdekawati Ahmad Rizqi Alima Fabri Alfanda, Benedcita Dian Aminatus Sa’diyah Ananda Krisna Aldianita Andifa, Vinda Aprilia Nurul Angelia Angelia Ani Iryani Anisa Rahma Maharani Ardi Lukman Hakim Arif Fadlan Ariwiyono, Nopem Ashari, Moch. Luqman Aunurohim Aunurohim Awik P.D. Nurhayati Azhaar, Nadia Bambang Antoko Benedicta Dian Alfanda Cahyaningati, Desi Cahyono, Luqman Cicilia Puspa Rini Dahlena Ariyani David StC Black Dewi Kurniasih Dheva Noveilya Didik Prasetyoko Didik Sukoco Djoko Hartanto Edi Haryono Eko Julianto Eky Novianarenti Eky Novianarenti Endro, R. Dimas Eva Melinda Evan Evan Fadlan, Arif Fahimah Martak Fatimatul Munawaroh Fatimatul Munawaroh Fendra Wician Fendra Wician Fiqey Indriati Eka Sari Ghaissani, Shabrina Syifa Gusma Hamdana Putra Hadi Nur Hadi Nur Haidhar Wahyu S Hakam, M Hanafi Hanafi Haniarta Gemilang Sari Hartati Hartati Hartono Gunarso Hasliza Bahruji Healthy Kainama Helena Fabiani Hendro Agus Widodo, Hendro Agus Henny Tanadi Tan Herdayanto Sulistyo Putro Heriyansyah, Rafi Akbar I Made Putra Ananta W Ikang Martin Trasnowo Imelda Imelda Imelda Priskila Simanjuntak Imroatul Qoniah Ingeswari, Aulya Vidiana Ivan DP Sunardi Jesika Setiawan Jovita Jovita Kamilia Mustikasari KAMILIA MUSTIKASARI Kavin, Layli Adha Nadira Kholifatu Rosyidah kholifatu rosyidah Khozin, Muhamad Nur Kristian Ariya Sedayu Kusdiantomo Kusdiantomo Kusminah, Imah Luluk Kusuma, George Endri Laila Khamsatul Muharrami, Laila Khamsatul Leaw Wai Loon Lingga Kamadatu Lukman Atmaja M Anis Mustaghfirin M Daffa Aditya M Hakam M. Rizal Fahmi Maharani, Aditya Maria Dewi Astuti Marshel Tendean Marshell Tendean Marshell Tendean Maya Damayanti Mochammad Choirul Rizal Mochammad Purwanto Mohammad Abu Jami'in Monica Puspa Sari muhammad fatoni, muhammad Muhammad Nur Kholis Muhammad Nur Kholis Mustaghfirin, M Anis Nabilah Dita Anaqah Nadia Sasanti Naufal Salehtra Ghalib Ni Kadek Githa Kartika Gunadyani Nindyapuspa, Ayu Ni’matut Tamimah Noer Komari Nor Farida Novpi Susanto Nugraeni, Christine Dyta Nugraheni, Zjahra Vianita Nur Hayati Nur Hayati Nurjanah, Ana Pieter Kakisina Ponti Almas Karamina Pramesti, Lely Purwanto, Mochammad Puspitasari Puspitasari Rafi Akbar Heriyansyah Rahma Rahayu Dinarlita Rahmat Rosid Ratna Ediati Regie Santoso Reynaldi Aurel Fadiilah RR. Ella Evrita Hestiandari Ruzain Rafie Sukma Putra Salsabila, Yofinta I Sarmoko Sarmoko Sa’diyah, Aminatus Sembiring, Rinawati Sri Fatmawati Sugeng Triwahyono Sumardiono . Susan Susan Susana Chandra Susanna Ndraha Susi Agustina Wilujeng Susy Budi Astuti SUYATNO Suzanna Ndraha Syafiuddin Syafiuddin Tamimah, Nimatut Taslim Ersam Taslim Ersam Umbara, Albert Wida Utomo, Agung Prasetyo Vanuella Tresnaning Budi Wati, First Ambar Wong Hendra Widjaja Yani Cahyo Susilo Yaqdhan Nufal Rafi Yatim Lailun Ni’mah Yuli Kusumawati Yuli Kusumawati Zainul Mujib Zulqurnain, Muhammad