Analisa Heat Balance Pada LNG Storage Tank Untuk Sistem Bahan Bakar Dual Fuel HarbourTug 2x2500 HP

Rachman, Fariz Daniyal (2021) Analisa Heat Balance Pada LNG Storage Tank Untuk Sistem Bahan Bakar Dual Fuel HarbourTug 2x2500 HP. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan idustri yang semakin pesat di era revolusi indutri 4.0 ini mengakibatkan kebutuhan akan energy juga semakin meningkat, yang mana kebutuhuhan energi / bahan bakar tidak diimbangi dengan kemampuan penyediaan energy. Oleh karena itu penggunaan energy alternatif seperti natural gas, digunakan untuk membantu menunjang kebutuhan energy. Natural gas dalam penggunannya harus didinginkan dengan temperature cryogenic sama rendahnya dengan -163oC sehingga akan berbentuk cair (Liquified Natural Gas) yang mana bertujuan agar menimalkan volumenya sehingga bisa lebih mudah di simpan dan di transportasikan. Untuk memaksimalkan penyimpanan LNG tank maka dilakukan anlaisa heat balance pada tangki LNG yang mana dengan tujuan untuk mengetahui temperature dan distribusi temperature yang terbentuk pada material struktur tangki dan material insulasi tangki. Perhitungan Analisa heat balance dilakukan dengan menggunakan metode FEA (Finite Element Analysis). Telah dilakukan simulasi steady state thermal analysis pada tangki yang sudah dibuat untuk tangki storage tank LNG untuk bahan bakar dual fuel harbour tug 2 x 2500 HP. Material yang digunakan adalah Outer wall (ASTM 516 Carboon Steel),Insulator Wall (Polyurethane), dan Inner Wall (ASME SA 240 Stainless Steel) dan dibandingkan dengan Material Insulasi (Perlite). Analisa dilakukan dengan variasi volume untuk kedua scenario material insulasi Polyurethane dan Perlite 85%.75%,50%,25%. Dari variasi tersebut didapatkan temperature pada outer untuk material Polyurethane sebesar rata-rata -20⁰ C pada Perlite 3⁰ C, pada Volume penuh 85%. Dan terus megalami kenaikan sampai volume 25% pada Polyurethane sebesar rata-rata 19⁰ C pada Perlite 3,7 ⁰ C. =================================================================================================== The rapidly growing industrial development in the 4.0 industrial revolution era has resulted in the need for energy also increasing, where the need for energy / fuel is not matched by the ability to provide energy. Therefore, the use of alternative energy, such as natural gas, is used to help support energy needs. Natural gas in its use must be cooled to a cryogenic temperature as low as -163oC so that it will be in liquid form (Liquified Natural Gas) which aims to minimize its volume so that it can be more easily stored and transported. In order to maximize the storage of LNG tanks, a heat balance analysis is carried out on the LNG tank which aims to determine the temperature and temperature distribution formed on the tank structure material and tank insulation material. Calculations Heat balance analysis is performed using the FEA (Finite Element Analysis) method. A steady state thermal analysis simulation has been carried out on a tank that has been made for an LNG storage tank for dual fuel harbor tug 2 x 2500 HP. The materials used are Outer wall (ASTM 516 Carbon Steel), Insulator Wall (Polyurethane), and Inner Wall (ASME SA 240 Stainless Steel) and compared with Insulation Material (Perlite). The analysis was carried out with volume variations for both scenarios of Polyurethane and Perlite insulation materials 85%,75%,50%,25%. From these variations, the outer temperature for Polyurethane material is -20⁰ C on average at 3⁰ C Perlite, at 85% full volume. And continues to increase until the volume of 25% on Polyurethane for an average of 19⁰ C on Perlite 3.7⁰ C.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Steady State Thermal,FEA,Heat Balance, LNG Sorage Tank
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM276.A1 Fuel (Including supplies, costs, etc.)
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM 464 Towboats. Tugboats
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM485 Cold storage on ships. Marine refrigeration.
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Fariz Rachman Daniyal
Date Deposited: 03 Sep 2021 05:57
Last Modified: 03 Sep 2021 05:57
URI: https://repository.its.ac.id/id/eprint/91511

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