Ανάπτυξη πρωτοκόλλου για την μελέτη δοκιμών υποβάθμισης της ποιότητας επικαλήψεων για ηλιακούς συλλέκτες

Σαλάκου, Σταυρούλα; Salakou, Stavroula

dc.contributor.author	Σαλάκου, Σταυρούλα	el
dc.contributor.author	Salakou, Stavroula	en
dc.date.accessioned	2016-01-27T10:07:02Z
dc.date.available	2016-01-27T10:07:02Z
dc.date.issued	2016-01-27
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/41873
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.10647
dc.rights	Default License
dc.subject	Νανοϋλικά	el
dc.subject	Ηλιακοί συλλέκτες	el
dc.title	Ανάπτυξη πρωτοκόλλου για την μελέτη δοκιμών υποβάθμισης της ποιότητας επικαλήψεων για ηλιακούς συλλέκτες	el
heal.type	bachelorThesis
heal.classification	Επιστήμη υλικών	el
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2014-10-03
heal.abstract	In the present diploma thesis, coatings used in parabolic trough cylinder solar panels of CSP technology (Concentrating Solar Power) were studied. The coatings were grown on stainless steel substrates (Stainless Steel 304L) and the aim was to study the resistance to heat and abrasion. The samples were subjected to a series of thermal tests involving thermal shock with abrupt change of temperature from -30 ° C to 595 ° C, heated at 550 ° C under inert gas and under atmospheric air. Then, the samples were tested by: X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray dispersing analysis (EDAX). In these thermal tests, were studied two kinds of samples with differences in the material of light absorption. The first type of samples was consisted of a layer of Mo-Al2O3, while the second type of samples was consisted of a layer of Mo-Si3N4. The obtained results prove that in the first case the samples showed a higher thermal stability. In the second part of the study, samples of Mo-Si3N4 submitted in tribological tests with rival body a zirconium spike. In the first set of tests, was studied, the effect of frictional speed on the result of wear while in the second set was studied, the affection of the number of frictional cycles in wear result. The aim of these tests was to extract a sequence of tribological tests in order to allow the disclosure of each successive layer of material, so the tribological behaviour of each individual layer could be studied systematically. The conclusion drawn from the tests was: the change of frictional cycles controls better the material removal in contrast to the change in the speed of rotation.	el
heal.advisorName	Παυλάτου, Ευαγγελία	el
heal.committeeMemberName	Καραντώνης, Αντώνης	el
heal.committeeMemberName	Μουτσάτσου, Αγγελική	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	84 σ.	el
heal.fullTextAvailability	true