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Article

A Comparative Analysis of EEDI Versus Lifetime CO2 Emissions

1
Department of Design Manufacturing and Engineering Management, University of Strathclyde, Glasgow G4 0LZ, UK
2
School of Mechanical Engineering, Sector of Industrial Management and Operational Research, National Technical University of Athens, 15780 Athens, Greece
3
Maritime Safety Research Centre, Department of Naval Architecture, Ocean, and Marine Engineering, University of Strathclyde, Glasgow G4 0LZ, UK
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(1), 61; https://doi.org/10.3390/jmse8010061
Received: 17 December 2019 / Revised: 12 January 2020 / Accepted: 15 January 2020 / Published: 20 January 2020
(This article belongs to the Special Issue Modelling and Optimisation of Ship Energy Systems)
The Energy Efficiency Design Index (EEDI) was introduced as a regulatory tool employed at the ship design phase to reduce the carbon dioxide (CO2) emissions and increase the vessel’s operational efficiency. Although it stimulated the greening of the shipping operations, its effectiveness is considerably criticised from various shipping industry stakeholders. The aim of this study is to investigate the EEDI effectiveness on accurately representing the environmental performance of the next-generation ships power plants for two representative ship types, in specific, an ocean-going tanker and a cruise ship. The performance of the optimal power plant solutions identified in previous studies is analysed according to the existing EEDI regulatory framework and compared with the lifetime CO2 emissions estimated based on an actual operating profile for each ship. The results indicate that the EEDI underestimates the effect of technologies for reducing carbon emissions in all the investigated cases. In this respect, it is concluded that EEDI is classified as a conservative metric, which however can be used as an approximation to compare alternative solutions early in the design phase. View Full-Text
Keywords: EEDI; carbon dioxide lifetime emissions; power plant alternative designs; comparative analysis; ship energy systems EEDI; carbon dioxide lifetime emissions; power plant alternative designs; comparative analysis; ship energy systems
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MDPI and ACS Style

Trivyza, N.L.; Rentizelas, A.; Theotokatos, G. A Comparative Analysis of EEDI Versus Lifetime CO2 Emissions. J. Mar. Sci. Eng. 2020, 8, 61. https://doi.org/10.3390/jmse8010061

AMA Style

Trivyza NL, Rentizelas A, Theotokatos G. A Comparative Analysis of EEDI Versus Lifetime CO2 Emissions. Journal of Marine Science and Engineering. 2020; 8(1):61. https://doi.org/10.3390/jmse8010061

Chicago/Turabian Style

Trivyza, Nikoletta L.; Rentizelas, Athanasios; Theotokatos, Gerasimos. 2020. "A Comparative Analysis of EEDI Versus Lifetime CO2 Emissions" J. Mar. Sci. Eng. 8, no. 1: 61. https://doi.org/10.3390/jmse8010061

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