Εφαρμογές κρυογονικών κύκλων

Διακονά, Μαρία; Diakona, Maria

dc.contributor.author	Διακονά, Μαρία	el
dc.contributor.author	Diakona, Maria	en
dc.date.accessioned	2022-11-14T09:44:47Z
dc.date.available	2022-11-14T09:44:47Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/56129
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.23827
dc.rights	Default License
dc.subject	Ψύξη	el
dc.subject	Κρυογονικοί κύκλοι	el
dc.subject	Διοξείδιο του άνθρακα	el
dc.subject	Αμμωνία	el
dc.subject	Ξηρός πάγος	el
dc.title	Εφαρμογές κρυογονικών κύκλων	el
heal.type	bachelorThesis	el
heal.classification	Ψύξη	el
heal.language	el	el
heal.access	campus	el
heal.recordProvider	ntua	el
heal.publicationDate	2022-06-16
heal.abstract	Greenhouse gases are considered to be one of the main causes of climate change, which has become one of the most important environmental concerns of modern society [1]. In this dissertation, methods will be developed which can reduce the imprint of greenhouse gases in the environment either directly or indi-rectly. To mitigate the threat of uncontrolled climate change, the Paris Agreement requires limiting global warming to just below two degrees Celsius compared to pre-industrial levels [2]. This in turn requires global emissions to peak as soon as possible with a rapid 45% drop from 2010 to 2030 levels and to continue de-clining sharply to achieve net zero emissions by 2050. Our society is far from achieving this goal at the cur-rent level of nationally defined contributions. Global greenhouse gas emissions from developed countries and economies in transition have decreased by 6.5% between 2000 and 2018. Meanwhile, emissions from developing countries increased by 43.2% from 2000 to 2013 . The increase is largely due to increased indus-trialization and enhanced economic production measured in terms of GDP. In order to be able to design the required methods that will aim to reduce greenhouse gas emissions, it is necessary to identify those sectors that contribute to higher rates of carbon emissions. Since the Industrial Revolution, human sources of car-bon dioxide emissions have been increasing. Human activities such as burning oil, coal and gas, as well as deforestation are the main cause of increased concentrations of carbon dioxide in the atmosphere. Eighty-seven percent of all man-made carbon dioxide emissions come from burning fossil fuels such as coal, gas and oil. The rest comes from deforestation and other land use changes (9%), as well as from certain indus-trial processes such as the cement industry (4%) [3]. Thus, maximum attention was paid to the exploitation of exhaust gases coming from such industries whose environmental footprint is quite high. Two of the tech-niques that will be used in the following work aim first at the exploitation of the exhaust gases by the indus-tries and then at the use of carbon dioxide as a means of refrigeration and not only processes. It is desirable not only to reduce the carbon dioxide emissions that are eventually released into the air but also to define the techniques by which waste gases could be exploited to produce compressed gases such as oxygen, the demand for which is constantly high. In the second part of the work you develop an extensive study which describes ways to utilize carbon dioxide in various processes through studies and experiments.	el
heal.advisorName	Τζιβανίδης, Χρήστος	el
heal.committeeMemberName	Τζιβανίδης, Χρήστος	el
heal.committeeMemberName	Κορωνάκη, Ειρήνη	el
heal.committeeMemberName	Ρογδάκης, Εμμανουήλ	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών. Τομέας Θερμότητας	el
heal.academicPublisherID	ntua	el
heal.numberOfPages	62 σ.	el
heal.fullTextAvailability	false
heal.fullTextAvailability	false