Schematics of a D-M, D-E and a hybrid system
This Scenario, owned by FERG and USTRATH, is aimed at developing software capability to optimize a novel hybrid propulsion system used in a short-route ferry.
The hybrid propulsion system being considered combines internal combustion engines and battery cells. The optimization here is to determine the most suitable combination of propulsion (i.e. the proportion of propulsion directly from combustion and that from battery), using a life cycle approach covering LCC, risk assessments and environmental impacts.
The approach will cover operation and maintenance, scrapping and recycling stages. Potentially, the implications of optimizing the propulsion system on the design and production of the short route ferry will also be considered using the generic functionality of the suite of software created.
In addition to optimizing the design of the hybrid system, an evaluation of three different propulsion systems: the hybrid system that distributes loads to generators and batteries based on specific route undertaken, the diesel –mechanical (D-M) system that propels the ship directly, and the diesel – electric system (D-E) that converts fuel into electricity that drives motors to propel the ship. Such an evaluation will be from the perspective of ship life cycle costs, environmental impact and risk assessment.
Work done in the FP7 projects Eco-REFITEC, MAINLINE and MOSAIC, and the European Platform for life cycle assessment will be considered in the development of applications within the Scenario. The ECO-REFITEC project aimed to assist shipyards and ship operators to perform cost effective refitting of existing fleet through technological developments and new tools helping to benchmark their performance and improve the retrofit processes and products and assessing the environmental and life cycle cost impact. In MAINLINE a life cycle assessment tool was developed to provide decision support in the integrity management of assets (such as bridges) from a life cycle perspective. MOSAIC investigated the use of special steels and composite materials for lighter, more eco-friendly merchant ships; the project involved looking at different options from a life cycle perspective. These projects had a common theme of evaluating options from a life cycle perspective, therefore allowing for knowledge gained to be transferred to SHIPLYS. Moreover, the project will avail of benefits from the European platform on life cycle assessment in this and other Scenarios.