At present, economical fuel use in marine vehicles is the need of the times. This has to be carried out keeping with environmental safety norms and not sacrificing on the propulsion efficiency and ship performance.
Due to fluctuations in fuel prices in recent years along with new environmental regulations pertaining to greenhouse gas emissions, ship owners are seeking alternative propulsion and power plant systems for enhanced efficiency and reduction of emissions, says a new report by Transparency Market Research.
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Q. What are the advantages of hybrid propulsion systems for marine operations over conventional ones?
A. Hybrid propulsion systems are clean and efficient, which in turn, help lower emissions significantly in comparison to conventional propulsion systems. Marine hybrid propulsion systems offer features such as silent maneuvering, a low degree of fuel consumption, and emission-free operations, due to which vessel and towage operators are investing heavily in this technology. Originally developed for the automotive industry, this technology has been improved for the design and development of efficient and economical marine hybrid propulsion systems.
Q. How did big treaties fare in reducing marine vehicular emissions in Europe?
A. The global climate treaties of Kyoto in 1997 and Copenhagen in 2009 have been committed to reducing greenhouse gas emissions and reduce dependence on fossil fuels. The European Union 20-20-20 declaration is committed to reducing greenhouse gas emissions and increasing renewable energies in the forthcoming years. These treaties have been paving the way for legislation for mandating the reduction of marine vehicular emissions.
In Europe, the funding for the research and development of technologies sans the utilization of diesel for marine propulsion is carried out under the HYMAR project. The project is managed by the European members of the International Council of Marine Industry Associations and the project’s objective is to provide solid data regarding marine hybrid propulsion systems.
Q. Are there operational limitations of marine hybrid propulsion systems?
A. Yes. Despite the advantages of hybrid propulsion technology for some vehicles such as yachts and other commercial vessels, there are some limitations. Such vessels usually have a limited range and need to be recharged using dockside outlets.
While hybrid systems offer unparalleled advantages for some commercial applications, the use of hybrid systems for yachts has not been the same. The high price factor of hybrid propulsion systems for yachts, which is almost three times more than the diesel-only version, is also hindering the adoption of marine hybrid propulsion systems.
Q. Do hybrid propulsion systems offer operational benefits in the event of an emergency for boats?
A. Not considerably. While hybrid propulsion offers the necessary power in the event of a breakdown of an automobile, it does not hold good for boats. On the contrary, deriving regenerative energy from powerboats results in loss of speed and reduced efficiency. Also, as there is no braking while the boat is in motion there is no way to capture the wasted energy. It is this difference between the energy lost while transferring from one medium to another that defines the efficiency of a hybrid propulsion system.
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