Αξιολόγηση των πτυχών ανακύκλωσης φτερών ανεμογεννητριών στο τέλος της ζωής τους, με έμφαση στα στερεά αφρώδη υλικά

Λουδάρου, Ευαγγελία; Loudarou, Evangelia

dc.contributor.author	Λουδάρου, Ευαγγελία	el
dc.contributor.author	Loudarou, Evangelia	en
dc.date.accessioned	2024-09-04T10:20:37Z
dc.date.available	2024-09-04T10:20:37Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/60131
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.27827
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	Πτερύγια Ανεμογεννητριών	el
dc.subject	Μηχανική Ανακύκλωση	el
dc.subject	Ανάκτηση Αφρού	el
dc.subject	Κόστος Ανακύκλωσης	el
dc.subject	Ποιότητα Υλικού	el
dc.subject	Wind Turbine Blades	en
dc.subject	Mechanical Recycling
dc.subject	Foam Recovery	en
dc.subject	Recycling Cost	en
dc.subject	Material Quality	en
dc.title	Αξιολόγηση των πτυχών ανακύκλωσης φτερών ανεμογεννητριών στο τέλος της ζωής τους, με έμφαση στα στερεά αφρώδη υλικά	el
heal.type	bachelorThesis
heal.secondaryTitle	Assessment of Recycling Aspects for End-of-Life Wind Turbine Blades with focus on rigid cellular foams	en
heal.classification	Μηχανική των Υλικών	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2024-02-29
heal.abstract	Wind energy has grown substantially with many countries relying on it more and more. However, as wind turbines installed in the 90s approach their end-of-life (EOL) between 20-25 years, the disposal of their composite blades poses a substantial challenge. While wind turbines are 85-90% recyclable, the land-filling of blades, an easy and cheap method, remains prevalent, despite its environmental drawbacks. The negative spotlight on the wind industry intensified in 2019 and led to heightened scrutiny and discussions on Wind Turbine Blade (WTB) waste management, shedding light on critical issues, including legislative barriers, linear economy limitations, inconsistent waste streams, expensive transportation, and the complex composite structure of the blades. Moreover, the quality of recovered materials often falls short, impacting their market value. Greece, as a member of the EU, is poised to confront WTB waste challenges in the coming years. This thesis delves into the barriers of WTB recycling and focuses on the recovery of rigid cellular foam from EOL blades. The theoretical and experimental research explores the feasibility of foam recovery, developing a model to forecast future waste, examining relationships between blade characteristics and mass distribution, and analyzing transportation scenarios. Theoretical research highlights the legislative recycling framework in the EU and especially Greece, emphasizing the need for a circular economy model. Thermoset composite blade complexity and the high energy requirements of recycling methods contribute to the elevated costs and lower quality of recycled materials. A comprehensive cost analysis, covering transportation, mechanical recycling and sink float separation, underscores the economic implications of foam recovery process. The waste mass estimation model reveals an inconsistent waste stream, hindering the establishment of a profitable recycling market. The dependency of mass distribution on blade length and power, along with transportation scenarios, further enriches the theoretical insights. To our knowledge such an analysis, extending beyond the WTB manufacturing, has never been conducted before for broader application. Experimental research investigates the feasibility of foam recovery, employing shredding machines and sink-float techniques for skin-foam separation. While challenges persist,such as surface impurities, experiments demonstrate the potential for foam recovery. Density evaluations and SEM analyses provide initial assessments of the recovered foam's quality. In conclusion, this thesis addresses multifaceted challenges in WTB recycling, proposing theoretical models and experimental approaches. It emphasizes the need for sustainable practices, legislative support, and innovative recycling methods to navigate the impending surge in WTB waste.	en
heal.advisorName	Αντωνίου, Αλλέξανδρος	el
heal.committeeMemberName	Κουρκουλής, Σταύρος	el
heal.committeeMemberName	Τσόπελας, Παναγιώτης	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών. Τομέας Μηχανικής	el
heal.academicPublisherID	ntua
heal.numberOfPages	143 σ.	el
heal.fullTextAvailability	false