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All Journal Infotekmesin Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Cakrawala Maritim Jurnal Teknologi Maritim Jurnal Cakrawala Maritim International Conference on Maritime Technology and Its Application Proceedings Conference on Marine Engineering and its Application
Eky Novianarenti
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISA MODEL GETARAN MAIN ENGINE PADA PONDASI MAIN ENGINE KAPAL TANKER 6500 LTDW Roslyna Lovelylo; Adi Wirawan Husodo; Eky Novianarenti
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This article mainly describes vibration on new ship’s main engine foundation. The highamplitude of vibration could damage ship’s hull structure and disturb ship’s passenger. The amplitudecan be reduced by adding damping in the main engine foundation. Thereby in this article, modellingthe matemathic equation to get the vibration response. In matemathic equation a software calledMATLAB is used to determine the best graphic response. The stiffness equivalen in the main enginefoundatioon is 1,29 × 106????/????????.In this article use two damping variastion. The first point graphicshow the displacement of main engine foundation in the amount of 0.3 mm on time 0 sec, The secondpoint o graphic show the displacement of main engine foundation in the amount of 0.278 mm on time 0sec, The third point graphic show the displacement of main engine foundation in the amount of 0.299mm on time 0 sec.
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%
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.
The Effect of Increasing Catalyst Concentration of Fabricated Hydrogen Generator on Proton Exchange Membrane Fuel Cell Performance M Anis Mustaghfirin; Mardi Santoso; M Hakam; Rafi Akbar Heriyansyah; Aminatus Sa’diyah; Eky Novianarenti; Ni’matut Tamimah; Haidhar Wahyu S
International Conference on Maritime Technology and Its Application Vol. 3 No. 1 (2025): ICOMTA : International Conference on Maritime Technology and Its Application
Publisher : Surabaya State Polytechnic of Shipbuilding

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/icomta.v1i1.9

Abstract

Hydrogen can be utilised through a Proton Exchange Membrane Fuel Cell (PEMFC) which has many advantages, namely more energy yield, higher energy density, no emissions, and no need for recharging compared to using batteries. The highest electrolyzer efficiency results were found on the 0.05M KOH catalyst with a value of 1.70% and it can be concluded that the higher the catalyst concentration, the higher the electrolyzer efficiency. The highest power density and fuel cell efficiency quality is found in the 0.05M NaCl catalyst but with the lowest Specific Fuel Consumption (SFC) of 0.62 kg/kWh, this indicates that the relationship between concentration and power density and fuel cell efficiency is directly proportional while it is inversely proportional to Specific Fuel Consumption ( SFC). The best Break Even Ratio value is found in the NaCl catalyst type 0.05 with a value of 0.082. The use of a seawater catalyst has the highest efficient value at a percentage of 100% with electrolyzer efficiency reaching 13.36% and the lowest SFC, namely 0.24 kg/kWh. Based on these results, the use of hydrogen generators for Proton Exchange Membrane Fuel Cells (PEMFC) needs to be developed.
Design of Effective Liquefaction Unit in LNG Plant Process based on Economic Study Eky Novianarenti; Erlinda Ningsih; Heroe Poernomo; Imaniah Sriwijayasih; Arrad Ghani S; Rizal Mahmud; Abdul Kadir Djaelani
International Conference on Maritime Technology and Its Application Vol. 3 No. 1 (2025): ICOMTA : International Conference on Maritime Technology and Its Application
Publisher : Surabaya State Polytechnic of Shipbuilding

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/icomta.v1i1.12

Abstract

Liquified Natural Gas (LNG) is natural gas that is used as a safe, clean and efficient energy source. LNG itself is liquefied and has been processed to remove impurities and heavy fraction hydrocarbons which are then condensed into liquid at atmospheric pressure with a temperature of -160 ºC. In Indonesia, LNG has good prospects for development, both in terms of raw material potential and its market. So, it is very appropriate if an LNG plant is established in Indonesia with the aim of meeting domestic LNG needs and opening up new jobs to reduce unemployment in Indonesia. LNG is made through several stages of the process, namely the Absorption, Dehydration, Fractionation and Liquefaction processes. The factory will be established in Muara Enim, Lahan Regency, South Sumatra Province. From economic calculations, it is obtained that the return on investment is 3.08 years after the factory is established. The rate of return on capital is 38.1%, and the BEP is 37.6%. Based on the economic analysis, the LNG plant from Natural Gas is feasible to be established.
Studi Pendahuluan Sistem Akuakultur Cerdas Berbasis Online Monitoring Terhadap Unjuk Kerja Kincir Aerasi Muh. Anis Mustaghfirin; Priyambodo Nur Ardi Nugroho; Dwi Sasmita Aji Pambudi; Eky Novianarenti
Infotekmesin Vol 13 No 2 (2022): Infotekmesin: Juli, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i2.1534

Abstract

This article discusses a preliminary study of developing a paddlewheel aerator for shrimp ponds using an integrated intelligent aquaculture system to support intensification. Two paddlewheel aerators with different phases have been successfully installed. The test was carried out on two different types of motors, which were intended to comprehend the performance of every motor on a paddlewheel aerator. The ratio of the speed values for a single-phase motor was 102 rpm and for a 3-phase motor was 110.3 rpm. The data from the performance observation of the aeration wheel motor can be viewed via a smartphone using a website application. The data displayed from the observations are in the form of data on voltage, current, frequency, power, power factor, and the power generated by the pinwheel motor. The test results show the performance of the aeration wheel motor that works under normal conditions with an average measurement error of 0.23%, below the acceptable error limit of 0.5%. This research forms the basis for a smart aquaculture system that can be developed domestically to support local industries in Indonesia.
Co-Authors Abdul Gafur Abdul Kadir Djaelani Adi Wirawan Husodo Aisyah Diva Aminatus Sa'diyah Aminatus Sa’diyah Arrad Ghani Safitra Dika Rahayu Widiana Dwi Sasmita Aji Pambudi Edi Haryono Emy Sofia Erlinda Ningsih, Erlinda Haidhar Wahyu S Heroe Poernomo Imah Kusminah Imah Luluk Imah Luluk Kusminah Imaniah Sriwijayasih Invinandri Joko Invinandri Joko Ahmad Julian Wahyu Perdana M Anis Mustaghfirin M Hakam Mardi Santoso Marlina Nelly Maulana Jalalluddin Safii May T Mubarokah Mayriza Mubarokah Tambas Mey Rohma Mey Rohma Dhani Mey Rohmadhani Mochamad Rizal Muh. Anis Mustaghfirin Nely Marlina Ni’matut Tamimah Pramesti, Lely Priyambodo Nur Ardi Nugroho Priyo Agus Setiawan Priyo Agus Setyawan Projek Priyonggo Sumangun Lukitadi Rafi Akbar Heriyansyah Rikky Leonard Rini Indarti Rizal Mahmud Roslyna Lovelylo Santoso, Emie Subriyer Nasir Tarikh Azis Ramadani Tri Dayanti Tuty Emilia Agustina Wido Juni Wijanarko