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All Journal International Journal of Marine Engineering Innovation and Research
Steffen Loest
Hochschule Wismar
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Analysis of the Requirement for the Ships Using Methanol as Fuel Michael Rachow; Steffen Loest; Agus Dwy Bramastha
International Journal of Marine Engineering Innovation and Research Vol 3, No 2 (2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1502.334 KB) | DOI: 10.12962/j25481479.v3i2.4054

Abstract

Methanol is a safe, cost-effective alternative marine fuel. It is one of promised solution for being shipping fuel because of it feedstock and produces less pollution than fossil fuel. Methanol is one of new fuel in the shipping industry; because of that there are lack of regulation for this fuel. IMO has not release regulation of using methanol as fuel but there is some draft is in process. The document that can be found to represent the draft of IMO IGF Code is report of Sub-Committee of Carriage Cargo and Containers (CCC) 3-3. Classification society that has the regulation for using methanol is LR and DNV GL. Comparing the three regulations and selecting the regulation that has high safety level is the best way to design the methanol-fueled ship. The result shows that there still some different opinion on the three regulations that regulate the methanol as ship fuel. Some regulation also doesn’t mention about the detail material that should be use in the system. Calculation method to selecting pipes thickness also different. To make it safe, the thick one should be used. Implementation the regulation on board ship resulting loses the payload of their cargo. The specific fuel consumption will be increased by factor 46% compared to fuel oil SFOC and the storage tank shall be protected by cofferdam that takes a lot of space. To safe ships space the service tank is recommended put in the main deck to prevent the use of protective cofferdam.
Integration of an Energy Storage in Connection with the Combustion Chamber of a Diesel Engine to Reduce the NOx Emission Dion Arman Lilipaly; Karsten Wehner; Steffen Loest
International Journal of Marine Engineering Innovation and Research Vol 2, No 4 (2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.702 KB) | DOI: 10.12962/j25481479.v2i4.4056

Abstract

This thesis is focusing on how to reduce the NOx emission since it has been an issue in all over the world. An idea that reduced the combustion temperature by integrating an external chamber connected with the combustion chamber as a temporary energy storage. This method is implementing the pressure-temperature law, where the pressure is reduced by expanding the volume that resulted a temperature decreased. The aims of this study were to make a feasibility study of the previous invention, a combustion model simulation and technical drawings design of the external chamber. The simulation model involves an analysis of how the temporary energy stored effected the combustion temperature and calculating the pipeline losses. The results showed that by installing the external chamber, the combustion temperature was reduced significantly by 6.15% for the burn zone and 17.8% for the unburn zone. Furthermore, a comparison of the pipeline heat loss showed that an insulated pipe saved 94.1% more heat energy than the uninsulated. The important factor in designing the external chamber were the spring deflection and piston bore. An analysis shown that the larger the deflection and piston bore, the bigger the pressure drop would be which is why an optimization of those factors were needed.
Co-Authors Agus Dwy Bramastha Dion Arman Lilipaly Karsten Wehner Michael Rachow