Techno-economic feasibility study on the retrofit of a conventional harbor tugboat into a battery powered one

Αλεξανδρατος, Ιωαννης; Alexandratos, Ioannis

dc.contributor.author	Αλεξανδρατος, Ιωαννης	el
dc.contributor.author	Alexandratos, Ioannis	en
dc.date.accessioned	2019-03-29T08:46:25Z
dc.date.available	2019-03-29T08:46:25Z
dc.date.issued	2019-03-29
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/48539
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.15922
dc.rights	Αναφορά Δημιουργού-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nd/3.0/gr/	*
dc.subject	Μετασκευή	el
dc.subject	Ηλεκτρικό πλοίο	el
dc.subject	Ρυμουλκό	el
dc.subject	Ρύποι	el
dc.subject	Μπαταρίες	el
dc.subject	Harbor tugboat	en
dc.subject	Emission quantification	en
dc.subject	All-electric ship	en
dc.subject	Batteries	en
dc.subject	Retrofit	el
dc.title	Techno-economic feasibility study on the retrofit of a conventional harbor tugboat into a battery powered one	en
heal.type	bachelorThesis
heal.classification	Feasibility studies	en
heal.classificationURI	http://skos.um.es/unescothes/C01498
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2018-10-10
heal.abstract	The high fuel oil prices, strict emission regulations as well as improved battery technologies and lower battery prices led to the development and use of novel technologies such as hybrid propulsion systems and cost effective and safe battery systems on the shipping industry. The commercial operation of the world’s first fully electric powered car ferry started in 2015. Since this time battery systems have been increasingly adopted successfully on other ships. The purpose of this dissertation is to investigate the technical, environmental and financial viability of retrofitting a conventional harbor tugboat into a battery powered one, utilizing modern commercialized battery chemistries and technologies. The tugboat in question will be “Archaggelos” which will be operating inside and near the port of Piraeus in a very narrow and tight environment. Its range will be of maximum 5-10 nautical miles outside the port. The operational profile of the tug is based on a 12-hour daily operation, 365 days per year. More specifically, two different technologies, a battery pack system built from lithium iron phosphate modules and a battery system based on the vanadium redox flow battery technology, are examined and compared to each other as well as to the conventional diesel-powered propulsion system. Finally, from the findings of this study it is concluded that even though a battery system based on Lithium iron phosphate modules is technically doable, the present battery prices make the investment of the retrofit profitable but risky without the use of external funding. On the other hand, a battery system based on vanadium redox flow battery technology could be fitted in the tugboat and needs further technological improvements for it to be a viable solution for this specific application.	en
heal.advisorName	Προυσαλιδης, Ιωαννης	el
heal.committeeMemberName	Λυριδης, Δημητριος	el
heal.committeeMemberName	Κλαδας, Αντωνιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών. Τομέας Ναυτικής Μηχανολογίας	el
heal.academicPublisherID	ntua
heal.numberOfPages	112 σ.
heal.fullTextAvailability	true