Techno-economical feasibility study on the retrofit
of mid-size ro-pax into hybrid ones / battery thermal and energy behavior prediction

Giachountis, Dimitrios; Γιαχούντης, Δημήτριος

dc.contributor.author	Giachountis, Dimitrios	el
dc.contributor.author	Γιαχούντης, Δημήτριος	el
dc.date.accessioned	2017-12-08T12:27:35Z
dc.date.available	2017-12-08T12:27:35Z
dc.date.issued	2017-12-08
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/46052
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.14878
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Hybrid propulsion	en
dc.subject	Mid-size passenger ship	en
dc.subject	Thermal flow cfd simulation	en
dc.subject	Electrochemical/energy behavior	en
dc.subject	Investment analysis	en
dc.title	Techno-economical feasibility study on the retrofit of mid-size ro-pax into hybrid ones / battery thermal and energy behavior prediction	en
heal.type	bachelorThesis
heal.classification	Marine engineering and hybrid propulsion	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2017-10-09
heal.abstract	Emissions from ships exhausts into the atmosphere can potentially be harmful to human health ,cause acid rain and may also contribute to global warming. The marine industry takes action on this matter by implementing strict regulations. IMO’s Marine Environment Protection Committee (MEPC) has given extensive consideration to control of GHG emissions from ships and finalized in July 2009 a package of specific technical and operational reduction measures. In March 2010 MEPC started the consideration of making the technical and operational measures mandatory for all ships irrespective of flag and ownership. MEPC 67 approved the Third IMO GHG Study, providing updated emission estimates for greenhouse gases from ships. According to estimates presented in this study, international shipping emitted 796 million tonnes of CO2 in 2012, that is, about 2.2% of the total global CO2 emissions for that year. By contrast, in 2007, before the global economic downturn, international shipping is estimated to have emitted 885 million tonnes of CO2, that is, 2.8% of the total global CO2 emissions for that year. By moving to hybrid or electric propulsion, marine vessels ensure in-built flexibility that can not only reduce emissions and optimize fuel consumption, but they are lighter and take up less space, with lower noise and vibration levels and reduced maintenance costs. The industry is moving towards this path we ought to contribute in achieving this. The abovementioned is what motivated this thesis, whose structure is discussed in the following sentences. Chapter 2 presents the hybrid propulsion technologies that are available, some concepts and case studies of marine vessels that comprise mechanical and electrical elements. This chapter also analyzes the hybrid configuration under study and in details the basic elements that is consisted of. The third chapter describes battery’s functions and how to evaluate each battery’s technology characteristics. In addition, the most important lithium ion battery technologies alongside with their specifications and applications are presented in order to help us evaluate the appropriate battery chemistry for the hybrid ship. Conceptual design of electrical topologies on board, on shore and cost calculation method is described on chapter 4. Possible electrical diagrams and infrastructures either on shore or on the boat depending to different scenarios/energy demands (existing electrical grid, high voltage/low voltage etc.) are explained as well. Chapter 5 is consisted of three parts. The first part describes the physics and available mathematical models, derived through experimentation, which define the thermal/electrochemical analysis. The second part describes the methodology we followed with the help of ANSYS to simulate the battery cell’s operational behavior, and the third the analysis of the results acquired. Chapter 6 analyses our retrofit design philosophy and the methodology developed for the estimation of the required battery capacity and PTO output power installed on board. Its inputs and equations are described in detail and the most important guidelines generated from the methodology are outlined. Chapter 7 discusses the results from the implementation of the methodology in the case study of: medium size passenger vessel. Topology designs, number of batteries installed according to operational profile and overall hybrid configurations are also included along with some diagrammatic predictions for the discharge behavior of the battery cells. Chapter 8 contains the criteria we considered, for evaluating the investment required for this project and some very important coefficients describing the dynamic relationship of capital and products through time. In addition this chapter entails an annual cash flow analysis followed by a sensitivity analysis, regarding the discount rate, and feasibility determination. The final chapter contains the conclusions for both the case study and the simulation analysis and recommendations for future work.	en
heal.advisorName	Προυσαλίδης, Ιωάννης	el
heal.committeeMemberName	Προυσαλίδης, Ιωάννης	el
heal.committeeMemberName	Κλαδάς, Αντώνιος	el
heal.committeeMemberName	Λυρίδης, Δημήτριος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών. Τομέας Ναυτικής Μηχανολογίας	el
heal.academicPublisherID	ntua
heal.numberOfPages	150 σ.
heal.fullTextAvailability	true