Leonardo, Adam (2020) Desain Gas Valve Unit Untuk Dual Fuel Engine Pada Tugboat 2 X 2500 HP. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
Text
04211740000060-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2023. Download (2MB) | Request a copy |
Abstract
Penggunaan bahan bakar fosil yang terus menerus suatu saat akan menimbulkan kelangkaan bahan bakar. Di dunia perkapalan, saat ini masih banyak kapal yang menggunakan bahan bakar minyak seperti HFO (heavy fuel oil) maupun MDO (marine diesel oil) dimana kedua bahan bakar ini tidak terbarukan. Gas alam merupakan bahan bakar alternatif yang bisa membantu menghemat penggunaan minyak bumi. Untuk bisa menggunakan gas alam sekaligus minyak bumi sebagai bahan bakar kapal maka diperlukan sebuah mesin yang disebut sebagai dual fuel engine. Pada mesin DF (dual fuel engine) terdapat sistem bahan bakar untuk mode gas. Sistem bahan bakar gas ini meliputi sistem penyimpanan, sistem regasifikasi, hingga sistem kontrol gas. Sistem kontrol gas pada mesin bahan bakar ganda dikenal sebagai GVU (gas valve unit). GVU ini berfungsi untuk mengontrol tekanan gas sebelum gas didistribusikan ke dalam mesin. Dalam tugas akhir ini akan dilakukan desain sistem GVU untuk dual fuel engine pada perencanaan pembuatan tugboat 2 X 2500 HP. Proses desain dilakukan dengan mempelajari GVU yang sudah ada di pasaran kemudian mencari prinsip atau cara kerja dari sistem GVU tersebut. Selain itu dilakukan kajian mengenai regulasi terkait dengan sistem GVU, salah satunya IGF Code. Pada penelitian tugas akhir ini didapatkan sebuah desain sistem gas valve unit dengan tipe enclosed dengan dimensi: panjang 1,54 m, lebar 1,42 m, dan tinggi 1,66 m. GVU ini berfungsi sebagai sistem kontrol tekanan gas sebelum gas diteruskan ke mesin. Selain itu GVU juga berfungsi sebagai sistem keamanan pada saat kapal beroperasi dengan bahan bakar gas. Semua katup pada desain GVU ini diantaranya: pressure regulator valve atau katup pengatur tekanan, double block and bleed valve yang terdiri dari dua katup blok dan satu katup ventilasi, katup gas inert semuanya menggunakan jenis katup tipe ball valve yang dilengkapi dengan actuator. Actuator pada tiap valve digerakkan oleh udara bertekanan. Udara ini didapat dari sistem udara bertekanan di kapal. Untuk itu diperlukan solenoid valve sebagai kontrol dari suplai udara ke actuator.
=====================================================================================================
The longterm use of fossil fuels will one day lead to fuel scarcity. In the shipping world, there are still many ships that use fuel oil such as HFO (heavy fuel oil) and MDO (marine diesel oil) as their main ship fuel where both fuels are not renewable. Natural gas is an alternative fuel that can help save the use of petroleum. To be able to use natural gas as well as petroleum as a fuel ship, it needs an engine called a dual fuel engine. In DF-engine (dual fuel engine) there is a fuel system for gas mode. This gas fuel system includes storage system, regasification system, as well as gas control system. The gas control system on dual fuel engines is known as the GVU (gas valve unit). This GVU serves to control the gas pressure before the gas is distributed into the engine. In this research will be done GVU system design for dual fuel engine in the planning of the manufacture of tugboat 2 X 2500 HP. The design process is done by studying the GVU that is already exists on the market and then looking for the principles or ways of working of the GVU system. In addition, a review of regulations related to the GVU system, one of which is IGF Code. In this final task research obtained a gas valve unit system design with enclosed type with dimensions: length 1.54 m, width 1.42 m, and height 1.66 m. GVU serves as a gas pressure control system before the gas is passed to the engine. In addition, GVU also serves as a security system when ships operate with gas. All valves in this GVU design include: pressure regulator valve or pressure regulating valve, double block and bleed valve consisting of two block valves and one ventilation valve, inert gas valve all use ball valve type valve type equipped with actuator. The actuator on each valve is driven by compressed air. This air is obtained from the pressurized air system on board. Therefore, solenoid valve is required as control of air supply to actuator.
Item Type: | Thesis (Undergraduate) |
---|---|
Uncontrolled Keywords: | dual fuel engine, gas valve unit design, 3D gas valve unit, |
Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM464 Towboats. Tugboats 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: | Adam Leonardo |
Date Deposited: | 04 Mar 2021 10:51 |
Last Modified: | 04 Mar 2021 10:51 |
URI: | http://repository.its.ac.id/id/eprint/83388 |
Actions (login required)
View Item |