Alternative Fuel Emissions with Regards to European Union’s Emissions Trading System and FuelEU Proposal
Lui, Tri (2023)
2023
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202501071057
https://urn.fi/URN:NBN:fi:amk-202501071057
Tiivistelmä
The expansion of global commerce has highlighted the critical role that marine transportation networks play within logistics systems. Despite gains in ship efficiency, the growing reliance on marine traffic within the global logistics system has resulted in a significant increase in greenhouse gas (GHG) emissions from the maritime industry.
The objective of this thesis was to calculate the specific fuel consumption, total GHG emissions, and carbon intensity metrics of the alternative fuels. In particular, the purpose of this thesis is to evaluate the appropriateness of MeOH and NH3 as alternative fuel choices within the context of the EU ETS and the upcoming FuelEU Maritime initiative.
Bulk carriers, oil tankers, and container ships, the types of vessels that emitted the most GHGs, were chosen for this thesis. The specific fuel consumptions were calculated based on the engine loading. The total GHG emissions were calculated with each fuel emission factor and the vessel's fuel consumption. Lastly, the carbon intensity metrics were calculated based on the voyage data.
The results of this thesis were compared to the IMO’s fourth GHG reports for vali-dation. The specific fuel consumption of alternative fuels was higher than that of conventional fuels, as the formers have lower energy density. With the lower energy density, the alternative fuels had to utilize conventional fuels as their pilot fuel to ignite and combust. However, the results still showed that there was a significant reduction in the total GHG emissions and carbon intensity.
The objective of this thesis was to calculate the specific fuel consumption, total GHG emissions, and carbon intensity metrics of the alternative fuels. In particular, the purpose of this thesis is to evaluate the appropriateness of MeOH and NH3 as alternative fuel choices within the context of the EU ETS and the upcoming FuelEU Maritime initiative.
Bulk carriers, oil tankers, and container ships, the types of vessels that emitted the most GHGs, were chosen for this thesis. The specific fuel consumptions were calculated based on the engine loading. The total GHG emissions were calculated with each fuel emission factor and the vessel's fuel consumption. Lastly, the carbon intensity metrics were calculated based on the voyage data.
The results of this thesis were compared to the IMO’s fourth GHG reports for vali-dation. The specific fuel consumption of alternative fuels was higher than that of conventional fuels, as the formers have lower energy density. With the lower energy density, the alternative fuels had to utilize conventional fuels as their pilot fuel to ignite and combust. However, the results still showed that there was a significant reduction in the total GHG emissions and carbon intensity.