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All Journal Jurnal Sains dan Teknologi Jurnal Techno Bahari Sewagati Jurnal Cakrawala Maritim Proceedings Conference on Marine Engineering and its Application
Burniadi Moballa
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Journal : Proceedings Conference on Marine Engineering and its Application

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EVALUASI SALURAN ISAP DEBU UNTUK SISTEM DUST COLLECTOR Destyandra Hermanu Ariandi; Endri Kusuma George; Moballa Burniadi
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.v1i1.702

Abstract

In the process of loading and unloading low calorie coal / LRC (Low Range Calorie) there is often pollution of coal dust and self combustion. This is because of the character of LRC coal is easily destroyed, the dust is very light and easy to burn. To prevent the occurrence of fire hazard, it is attempted to break one of the danger chain by optimizing the dust collector. Therefore, the capability of suction dust collector should be increased so that the impact of dust can be reduced. The simulation shows that the dust inside the conveyor can not be inhaled because the velocity of the inlet conveyor is 2.9 m/s. While the suction collector force of 1.5 m/s causes the dust collector not to capture the dust completely. Therefore it is necessary to increase the velocity of the suction channel on the dust collector, by varying with ratios 3 and 4. Between the two variations the best suction is the ratio 3 with the suction rate of 9 m/s. Furthermore, there is a change in suction hood angle with angle variation of 14 degree, 17 degree, 20 degree to get mass concentration. All angle variation within suction speed 12 m/s. The simulation result with an angle of 14 degrees obtained mass concentration of 14940,23 mg/m,3 with an angle of 17 degrees of 3,05 mg/m3, and with an angle of 20 degrees of 0,000741 mg/m3. Of the three variations, the mass concentration obtained at the outlet is at least 20 degrees suction hood angle.
Evaluasi Numerik Kinerja Condenser PLTU Unit 8 di PT. POMI Paiton Suantara Darma Gede; Agus Setiawan Priyo; Moballa Burniadi
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.v1i1.708

Abstract

Condenser modeling to determine the performance of industrial condensers on a steampower-based energy generator. The effectiveness of condenser is very important, so the condenserperformance needs to be maintained. The efficiency of condenser work directly affects theperformance of turbine steam, which is an energy generator in the system. The saturation pressurein the industrial condenser before to the plugging process has the highest value of 27790.0 (Pa). Themaximum condensation rate value in the industrial condenser before the plugging process is0.00529579 (Kg/m3.s). The saturation temperature in the industrial condenser after the pluggingprocess has the highest value of 300.0 (oK). The maximum condensation rate value in the industrialcondenser after the pluging process is 0.00519625 (Kg/m3.s).
Kajian Numerik Infiltrasi Flue Gas pada Komponen Lance Tube Soot Blower Tipe PS-SL Haidar Ali Yafie M; Shah Muhammad; Moballa Burniadi
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.v1i1.711

Abstract

One failure that often occurs in the sootblower is that it breaks in the lance tube caused by corrosion. Based on the results of the root analysis the failure of the cause of corrosion in the component lance tube is caused by the occurrence of flue gas infiltration which results in blockage of the vent valve. This causes the remaining blowing medium cannot be pushed into the furnace and if left for too long will cause condensation in the lance tube. Condensation mixed with corrosive substances from flue gas can accelerate the corrosion rate on the lance tube. The simulation was carried out using the CFD (Computational Fluid Dynamics) method assisted by Fluent ANSYS 17.2 software. Corrosive substances in flue gas are modeled as inert particles of fly ash using DPM (Discrete Phase Model). To overcome the infiltration problem, angular variations were made in the converging section of the under-expanded nozzle on the lance tube. The concentration of DPM particles is compared to the cross section to find out how many corrosive particles enter the soot blower. Particle concentrations at angles of 10º 15º and 20º are 2,043 kg/m³, 0.515 kg/m³, 0475 kg/m³, respectively. While the mass fraction is 0.0069, 0.0017, 0.0016, respectively. The simulation results show a reduction in infiltration with the addition of an angle to the nozzle, with an angle of 20º showing the best results.
KAJIAN NUMERIK BACK FLOW CAMPURAN BATUBARA–AIR PERPIPAAN BA-300 PADA PYRITES HOPPER SYSTEM DI PLTU UNIT 8 PT. POMI PAITON Khairuddin Khairuddin; Priyonggo SL Projek; Moballa Burniadi
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.v1i1.815

Abstract

Pulverizer is one of the most important equipment in PLITU PAITON Unit 8, the pulverizer has supporting equipment, one of which is the pyrites hopper system. The functions pyrites hopper is to accommodate coal reject from pulverizer which will be directed towards SSCC using a jet pump. The occurrence of backflow causes damage to the pulverizer on the floor plate. Thermal stress occurs because the backflow of the BA-300 piping flow that enters the pulverizer floor plate temperature drops. This research discusses the backflow causes that occur in the BA-300 pipeline and alternative solutions. This research phase starts from the identification of backflow problems, data collection and literature study regarding backflow on the swing check valve, as well as CFD (Comptational Fluid Dynamics), modeling of existing BA-300 piping system, search and evaluation of alternative solutions. From the simulation results, the coal particles are sandwiched between the disc and casing check valve because the coal particles settle at the bottom of the check valve, which is caused by the amount of flow rate of coal 2.6 kg / s. Of the 6 variations made, the reduction in flow rate with the amount of 1.7 kg / s was not found again pinched coal even though there was still a bit of coal sequestration.Keyword : Backflow, CFD, Swing check valve model.
Pengaruh Penambahan Becker Mewis Duct pada Perfoma Propeller B-series Husnun Aska Nabilah; Burniadi Moballa; 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.v6i1.2628

Abstract

Pollution due to sea transportation is a problem that requires consistent handling. Recent years of research in the field of shipping have focused on reducing exhaust emissions by increasing fuel efficiency and decarbonization. Decarbonization in the shipping industry can be achieved by using energy saving devices to reduce fuel consumption. The Energy Saving Device commonly used in the shipping world is the Becker-Mewis duct (BMD). This study used a variation of the NACA profile on the Becker-Mewis duct fin. The CFD (Computational Fluid Dynamics) method is used to analyze the thrust coefficient and torque coefficient. Becker-Mewis duct was added to increase thrust and torque values. From the results of the analysis that has been carried out without variations from NACA, the thrust coefficient is 0.1526, the torque coefficient is 0.0162 and the efficiency is 0.5261. With the NACA 4412 variation, it has a thrust coefficient of 0.2579, a torque coefficient of 0.0252 and an efficiency of 0.5728. The NACA 4415 variation has a thrust coefficient of 0.2663, a torque coefficient of 0.0260 and an efficiency of 0.5743. With increased efficiency, the addition of Becker-Mewis duct can increase the performance of the propeller
Kajian Numerik Penerapan Organic Rankine Cycle sebagai Metode Energi Take-Off dari Penyimpanan Energi Termal Skala Jala-Jala Dwiyan Bagus Prayoga; Burniadi Moballa; Pranowo Sidi
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.v6i1.2629

Abstract

Energy is a need that must be met in human life, if the population increases, the need for energywill also increase. A technology is needed to support human energy needs. Therefore, low temperature heatutilization is carried out using the Organic Rankine Cycle as an energy take off from a grid-scale thermalenergy storage in the form of sand media where the heat stored is heat wasted from the heat pump. After theprocess simulation is carried out, the best and feasible fluid to run the system from an ammonia heat pumpis N-Pentane with an efficiency of 7.074%. The storage medium is silica sand. The heat exchanger design onthe tube has an outer diameter of 60.3 mm for the ORC and 42.2 mm for the heat pump with an inner diameterof 54.8 mm for the ORC tube and 32.5 mm for the heat pump. The length of the heat exchanger design pipeis 165,57 m for the ORC and 479,23 m for the heat pump.
Kajian Numerik Penerapan Heat Pump sebagai Sarana Penyimpanan Energi Skala Jala-Jala dari Pembangkit Energi Terbarukan Refi Afrilia; Eko Julianto; Burniadi Moballa
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.v6i1.2631

Abstract

Utilization of New Renewable Energy (EBT) today must be carried out because of its abundantpotential. One of the uses is to use energy storage with a heat pump system sourced from EBT. To supportthis, it is necessary to use a heat exchanger in an energy storage system which is expected to make theheating or cooling system faster with the right refrigerant. Therefore, a study was carried out using theapplication of a heat pump system with the addition of a heat exchanger as a place to store energyoriginating from Renewable Energy. The method used is process simulation using DWSIM. The refrigerantused is R-600a, R-407C. R-410a, R-22, and ammonia. Ammonia was chosen because it produces aCoefficient of Performance of 3.012 with a condenser outlet temperature of 102.854°C. The storagemedium used is silica sand.
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.
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
Kajian Numerik Penerapan Turbin Hydrokinetic Darrieus Sebagai Wave and Current Energy Converter Dengan Variasi Sudut Serang dan Solidity Muhamad Agus Prasetyo M; 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.v6i1.2673

Abstract

The ocean is the largest source of potential energy in Indonesian country, one potential thatcan be expoloites is energy from sea wave and current which can be alternative to meet national energyneeds, ocean wave and current energy includes EBT resources which is rarely explored. Ocean wave andcurrent energy conversion can be converted into electrical energy by use the movement of sea waterwave, hydrokinetic Darrieus tubine is a conversion tool that can be used to convert kinetic energy intomechanical energy, In this case study, used angle of attack and solidity variation of the hydrokineticDarrieus tubine were used, the wave data used is the Southern Waters of Java Island, which is preciselyat Tanjung Bili Beach, Malang. By ussing airfoil NACA 0018 and profile Darrieus turbine diameter of 1m. Produce RMS CT and CP values with the stable is found on the solidty variation 0,15 with angle ofattack 10o TSR 0,25 omega (?) 0,5 with RMS value of CT 0,1512 and CP 0,075.
Co-Authors Agung Purwana Agung Purwana Arrosyid, Alwi Asrori Asrori Azzah Dyah Pramata, Azzah Dyah Benedicta Dian Alfanda Dahlan, Robi Daisy Dwijati Kumala Ratna Danis Maulana Destyandra Hermanu Ariandi Diah Susanti Dwiyan Bagus Prayoga Eko Julianto Fajarin, Rindang Haidar Ali Yafie M Haniffudin Nurdiansah Hariyati Purwaningsih Husnun Aska Nabilah Kamilah, Imada Millatul Khairuddin Khairuddin Kusuma, George Endri Muchammad Fajar Muttafaq Muh Anis Mustaghfirin Muhamad Agus Prasetyo M Muhamad Andika Prasetyo Muhammad Rafli Syahrizal R Piero Wahyu Iskandar Ponti Almas Karamina Pramesti, Lely Pranowo Sidi Priyo Agus Setiawan Priyonggo SL Projek Rakhmawati, Yeny Widya Refi Afrilia Ryan Yudha Adhitya Shah Muhammad Sryang Tera Sarena Suantara Darma Gede