Figure 11. Integration of TARGETS components into the energy model of the ship under consideration
the modularity of the methodology allows the integration and assessment of alternative sources of energy (solar, wind, fuel cells, etc.), which have started receiving attention in the maritime industry recently. Finally,
it should be noted that the
combination of energy audits and ESP has a dual input to the simulation results with DEM. The on-site measurements will be used for the benchmarking of the DEM results and, following this, the ESP will set the basis for alterations that will improve the energy effi ciency of a ship. T ese alternative confi gurations (either in the choice of systems of diff erent capacity or combination of systems) will be assessed with DEM. T e outcome of this work will be compiled in a set of guidelines for the improvement of the energy performance of cargo ships and will constitute one of the major outcomes of TARGETS.
Conclusions Bringing together the principal elements determining the use of energy onboard a cargo ship and integrating them in a holistic simulation TARGETS assess key elements responsible for the use of energy. T e interplay of advanced hydrodynamic tools for resistance and propulsion together with models for engines and auxiliary machinery as well as auxiliary energy converters complements a
comprehensive dynamic energy simulation model for the complete ship. Benchmarking against dedicated energy audits will prove the viability of the concept towards the end of the project. The final dynamic energy simulation
tool to be delivered at the end of the project will be applied through a number of stages during the life cycle of a ship. Starting from the assessment of early designs throughout its operational stages the dynamic energy model will allow assessing energy consumption of a ship and guide users to achieve optimised levels of energy consumption. NA
Acknowledgements The research performed in the TARGETS project is partly funded by the European Commission under Grant 266008 as part of the 7th Framework Surface Transport programme. T e editor wishes to express many thanks to all who have contributed, namely the partners in the project’s Steering Group and all Work Package managers.
References Second IMO GHG Study 2009, Marine Environment Protection Committee Emerson, A. and Sinclair, L (1978), “Propeller design and model experiments”, N.E.C.I.E.S, Vol. 94.
Level Gauging?
Marti, J., Mermiris, G. “TARGETS improves Energy Efficiency of Seaborne Transportation”, Glasgow, IMDC 2012 M Mermiris, D., Vassalos, D., Dodworth, K., Sfakianakis, D. and M Mermiris, G., “Dynamic Energy Modeling – A New Approach to Energy Efficiency and Cost Effectiveness in Shipping Operations”, Proceedings of the Low Carbon Shipping Conference, Glasgow, 2011 Mermiris, D. and Mermiris, G., “Integration of Energy Modules”, Targeted Advanced Research for Global Efficiency of Transportation Shipping (TARGETS, contract no. 266008), Deliverable D5.2.1, 2011 MEPC, ‘Marine Environment Protection Committee,
58th Session’, 2008,
International Maritime Organisation (www.
imo.org) Paynter, H. M., “Analysis and Design of Engineering Systems”, Cambridge, MIT Press, 1961 Stück, A., Kroger, J. & Rung, T., (2011) Adjoint-based Hull Design for Wake Optimisation, Schiffstechnik, Vol. 58, No 1. 2011. Renzsch, H: (2012) A simple approach for preliminary assessment of the feasibility of wind-powered auxiliary propulsion, Glasgow, IMDC 2012
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The Naval Architect September 2012 89
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