Electro-technologies for energy efficiency improvement and low carbon emission in maritime transport
2015
The global share of greenhouse gas (GHG) emissions from ships is on the
rise which will become a significant portion leading to climate changes and other
environmental issues unless reduction measures are taken. Therefore, the International
Maritime Origination (IMO) and other regulatory bodies have set limits for emissions
and defined emission controlled areas. As a result, alternative fuel such as Hydrogen and
liquefied natural gas (LNG) that are low in greenhouse gas emission and competitive in
cost are gradually being entered into the shipping industry. However, these alternative
fuel technologies are still in the developing stage and the necessary infrastructure is
not fully developed yet. Therefore, it is reasonable to assume that majority of the ships
continue to burn fossil fuel for the foreseeable future.
A promising and viable solution for reducing the emissions is to reduce the fuel
consumption through efficiency improvement. In this context, electro-technologies
are shown to be capable of playing a vital role in improving fuel efficiency and thereby
reducing emissions. The aim of this paper is to present a review on recent advancements
of electro-technologies that help improve fuel efficiency of ships. A hybrid electric
ship propulsion system is discussed as an example to show the potential of electrotechnologies
in improving the fuel efficiency.
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