Abstract
Annually a large amount of goods has been transported over the world and the most of the transportation is carried by seaborne. Although the seaborne trade is considered to be the most efficient – economically and environmentally friendly way of transportation an enormous amount of fossil fuels is used to fulfil the operation of the merchant fleet. Although we are living in times where efforts are directed to improvement of the state of the environment and reduction of the negative impact of the Greenhouse Gases, the fossil fuels still remain the main energy source used to run the internal combustion engines widely used in the ships nowadays. A well-known fact is that the fuel burning leads to significant harmful emissions generation causing a serious negative effect on the surrounding us environment. The introduced by IMO and MEPC requirements regarding the Greenhouse Gases (GHG) imposes for development and application of new criteria when selecting the ship’s propulsion plant. In the current article will be observed three ship groups consisting of real container vessels. The purpose is to analyse the impact caused by the fuel type used in the ship’s engines on the GHG generation and the economic indicators related with fuel costs
Highlights
The seaborne trade is a constantly evolving area developing and incorporating new technologies with purpose to turn the shipping into one much cleaner and environmentally friendly industry.Annually the worldwide shipping uses a large amount of fossil fuels to run the available fleet, which burning in the ship engines is resulting in enormous Greenhouse Gases (GHG) generation negatively reflecting on the surrounding us environment.The GHG emissions — including carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), expressed in CO2e — of total shipping have increased from 977 million tonnes in 2012 to 1,076 million tonnes in 2018 (9.6% increase)
The worldwide shipping uses a large amount of fossil fuels to run the available fleet, which burning in the ship engines is resulting in enormous GHG generation negatively reflecting on the surrounding us environment
The values for global CO2 emissions and the share that falls for the shipping industry in the period of 2012÷2018 are given in Table 1
Summary
The seaborne trade is a constantly evolving area developing and incorporating new technologies with purpose to turn the shipping into one much cleaner and environmentally friendly industry. It is important to note that the modern engines are characterized with lower specific fuel consumption (SFC) when compared to the previous generations This leads to fuel costs reduction for each separate voyage as well as for each operational period of the ship. In 2011, IMO adopted mandatory technical and operational energy efficiency measures which are expected to significantly reduce the amount of CO2 emissions from international shipping. These mandatory measures (EEDI/SEEMP) entered into force on 1 January 2013. IMO has adopted important guidelines aimed at supporting implementation of the mandatory measures to increase energy efficiency and reduce GHG emissions from international shipping [2]. With purpose to perform that we will use as example existing ships and a substitution of their power plants will be done with regard to account the improvement in GHG emitting only due to the proper engine selection
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