THESIS FOR THE DEGREE OF DOCTOR OF ENGINEERING Modelling, analysis and optimisation of ship energy systems FRANCESCO BALDI Department of Shipping and Marine Technology CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2016 Modelling, analysis and optimisation of ship energy systems FRANCESCO BALDI
[email protected] +46 (0)31 77 22 615 © FRANCESCO BALDI, 2016 ISBN: 978-91-7597-359-3 Doktorsavhandlingar vid Chalmers tekniska högskola Ny serie nr 4040 ISSN 0346-718X. Department of Shipping and Marine Technology Chalmers University of Technology SE-412 96 Gothenburg Sweden Telephone + 46 (0)31-772 1000 Cover: Emergence in ship modelling. Photo by Francesco Baldi, Edited by Sandro Baldi Printed by Chalmers Reproservice Gothenburg, Sweden 2016 Abstract Shipping is the backbone of today's economy, as 90% of global trade volumes is transported by sea. Much of our lifestyle today is only made possible by the existence of shipping as a cheap and reliable mean of transportation across the globe. However, the shipping industry has been challenged in the latest years by, among others, fluctuating fuel prices and stricter environmental regulations. Its contribution to global warming, although today relatively small, has been set under scrutiny: for shipping to be part of a sustainable economy, it will need to reduce its emissions of greenhouse gases. Increasing ship energy efficiency allows reducing fuel consumption and, hence, carbon dioxide emissions. The latest years have witnessed a multipli- cation of the efforts in research and development for increasing ship energy efficiency, ranging from improvements of existing components to the devel- opment of new solutions. This has also contributed to ship energy systems to become more complex.