Analisa Aliran Fluida Pada Sistem Perpipaan Bahan Bakar Dual Fuel Diesel Engine Harbortug 2 X 2500 HP Berbasis Simulasi

Rohman, Bima Muqsithur (2021) Analisa Aliran Fluida Pada Sistem Perpipaan Bahan Bakar Dual Fuel Diesel Engine Harbortug 2 X 2500 HP Berbasis Simulasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini berhubungan dengan pengembangan penggunaan gas alam cair sebagai bahan bakar yang efisien dan ramah lingkungan pada armada kapal di indonesia. Kapal yang digunakan dalam penelitian ini adalah harbour tug 2 X 2500 HP. Penelitian ini melanjutkan dari penelitian sistem bahan bakar pada mesin berbahan bakar ganda di harbour tug, desain sistem bahan bakar gas alam cair dengan komponen-komponen permesinan yang telah disusun dan perpipaan sebagai media transfer gas alam cair perlu dilakukan pengujian untuk mengetahui secara detail proses transfer bahan bakar dengan menyesuaikan kebutuhan dari mesin induk kapal. Penelitian ini berfokus kepada analisa aliran fluida pada sistem perpipaan bahan bakar gas alam cair dari storage tank sampai komponen gas valve unit. Tujuan penelitian ini untuk mendapatkan tekanan, kecepatan, dan temperatur fluida bahan bakar gas alam cair. Penelitian ini berbasis simulasi dengan menggunakan software ansys. Tahapan utama penelitian ini yaitu (1) pengumpulan data-data yang menunjang penelitian. (2) Pengolahan data menggunakan metode computational fluid dynamic. (3) Menganalisa hasil simulasi dan melakukan validasi. Hasil validasi antara simulasi dengan perhitungan memiliki error dibawah 20%. Pipa yang menuju regasification unit pada mode full speed memiliki tekanan outlet 650 kPa, kecepatan outlet 0,94 m/s, dan temperatur outlet 109°K. Pada mode eco speed memiliki tekanan outlet 650 kPa, kecepatan outlet 0,66 m/s, dan temperatur outlet 109°K. Pipa yang menuju buffer tank pada mode full speed memiliki tekanan outlet 646,14 kPa, kecepatan outlet 13,9 m/s, dan temperatur outlet 298,06°K. Pada mode eco speed memiliki tekanan outlet 648,33 kPa, kecepatan outlet 9,15 m/s, dan temperatur outlet 298,07°K. Pipa yang menuju gas valve unit portside pada mode full speed memiliki tekanan outlet 655,1 kPa, kecepatan outlet 14,03 m/s, dan temperatur outlet 298,14°K. Pada mode eco speed memiliki tekanan outlet 655 kPa, kecepatan outlet 9,12 m/s, dan temperatur outlet 298,16°K. Pipa yang menuju gas valve unit starboard pada mode full speed memiliki tekanan outlet 655,1 kPa, kecepatan outlet 14,09 m/s, dan temperatur outlet 298,17°K. Pada mode eco speed memiliki tekanan outlet 655,1 kPa, kecepatan outlet 9,09 m/s, dan temperatur outlet 298,23°K. ====================================================================================================== This research is related to the development of the use of liquefied natural gas as an efficient and clean fuel in the fleet of ships in Indonesia. The ship used in this study is a harbor tug 2 X 2500 HP. This research continues from the research on the fuel system on the dual-fuel engine in the harbor tug, the design of the liquefied natural gas fuel system with the engine components that have been arranged and the piping as a transfer medium for liquefied natural gas need to be tested to find out the detail of fuel transfer process by adjusting the needs of the ship's main engine. This research focuses on fluid flow analysis in the liquefied natural gas fuel piping system from storage tank to gas valve unit component. The purpose of this study was to obtain the pressure, velocity, and temperature of the liquefied natural gas fuel. This research is based on simulation using ansys software. The main step of this research are (1) collecting data that supports research. (2) Data processing using computational fluid dynamic method. (3) Analyze the simulation results and perform validation. The results of the validation between the simulation and the calculation from pressure, velocity, and temperature have an error below 20%. The pipe towards to the regasification unit in full speed mode has an outlet pressure of 650 kPa, outlet speed of 0.94 m/s, and outlet temperature of 109°K. In eco speed mode, it has an outlet pressure of 650 kPa, outlet speed of 0.66 m/s, and outlet temperature of 109°K. The pipe towards to the buffer tank in full speed mode has an outlet pressure of 646.14 kPa, outlet speed of 13.8 m/s, and outlet temperature of 298.06°K. In eco speed mode, it has an outlet pressure of 648.33 kPa, outlet speed of 9.2 m/s, and outlet temperature of 298.07°K. The pipe towards to the portside gas valve unit in full speed mode has an outlet pressure of 655.1 kPa, outlet speed of 14.03 m/s, and outlet temperature of 298.14°K. In eco speed mode, it has an outlet pressure of 655 kPa, outlet speed of 9.12 m/s, and outlet temperature of 298.16°K. The pipe towards to the gas valve unit starboard in full speed mode has an outlet pressure of 655.1 kPa, outlet speed of 14.09 m/s, and outlet temperature of 298.17°K. In eco speed mode, it has an outlet pressure of 655.1 kPa, outlet speed of 9.09 m/s, and outlet temperature of 298.23°K.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: harbor tug, liquefied natural gas, dual fuel engine, piping
Subjects: T Technology > T Technology (General) > T57.62 Simulation
T Technology > TJ Mechanical engineering and machinery > TJ324.5 Fuel systems
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Bima Muqsithur Rohman
Date Deposited: 02 Sep 2021 03:13
Last Modified: 02 Sep 2021 03:13
URI: https://repository.its.ac.id/id/eprint/91462

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