Μοντελοποίηση θερμοφυσικών ιδιοτήτων μιγμάτων που περιέχουν υδρογόνο με εφαρμογή την παραγωγή, μεταφορά και αποθήκευση υδρογόνου

Πατρικιάδου, Αναστασία; Patrikiadou, Anastasia

dc.contributor.author	Πατρικιάδου, Αναστασία	el
dc.contributor.author	Patrikiadou, Anastasia	en
dc.date.accessioned	2024-01-29T08:18:50Z
dc.date.available	2024-01-29T08:18:50Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/58699
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.26395
dc.rights	Default License
dc.subject	Υδρογόνο	el
dc.subject	Δυαδικά μίγματα υδρογόνου	el
dc.subject	Ισορροπία ατμού-υγρού	el
dc.subject	Θερμοφυσικές ιδιότητες υδρογόνου	el
dc.subject	Peng-Robinson	en
dc.subject	SAFT-VRQ-Mie	en
dc.subject	UMR-PRU	en
dc.subject	Hydrogen	en
dc.subject	Thermophysical properties of hydrogen	en
dc.subject	Hydrogen binary mixtures	en
dc.subject	Vapor-liquid equilibrium	en
dc.title	Μοντελοποίηση θερμοφυσικών ιδιοτήτων μιγμάτων που περιέχουν υδρογόνο με εφαρμογή την παραγωγή, μεταφορά και αποθήκευση υδρογόνου	el
dc.title	Modeling of thermophysical properties of hydrogen-containing mixtures with application to production, transport and storage of hydrogen	en
heal.type	bachelorThesis
heal.classification	Θερμοδυναμική	el
heal.classification	Thermodynamics	en
heal.language	en
heal.access	campus
heal.recordProvider	ntua	el
heal.publicationDate	2023-07-07
heal.abstract	As the world is grappling with an unprecedented energy and climate change crisis, it has become imperative to transition from traditional fossil fuels to alternative, sustainable energy sources with low or zero carbon footprint. Hydrogen, being a clean energy carrier with high energy content per mass, has great potential to lead the transition to clean energy. To harness hydrogen’s potential, accurate knowledge of its thermophysical and thermodynamic properties is needed, in order to optimally design and operate its production, storage and transport processes. The objective of this work is to develop a simple model based on the widely used Peng-Robinson equation of state to accurately describe pure hydrogen’s and hydrogen-containing-mixtures properties. The accuracy in the description of pure hydrogen’s properties such as vapor pressure, saturated liquid and vapor phase density as well as density, isobaric heat capacity, speed of sound and Joule-Thomson coefficient at supercritical temperatures, was examined with various alpha functions proposed in literature, and regression of experimental data of vapor pressure and supercritical isobaric heat capacity was conducted to determine optimal parameters for the equation of state. It was concluded that Soave’s alpha function with the NIST proposed acentric factor’s value of -0.219 is optimal, achieving high accuracy with a low level of complexity. A comparison of the performance of the model was made with the SAFT-VRQ-Mie equation of state which incorporates quantum corrections addressing hydrogen’s quantum nature. It was concluded that Peng-Robinson yields better results in the vapor pressure, saturated vapor phase density and supercritical isobaric heat capacity calculations. The vapor-liquid equilibrium of several binary mixtures of hydrogen with compounds relevant to the hydrogen technology, such as light hydrocarbons and aromatic compounds was investigated. Experimental data was regressed to determine an optimal temperature-independent binary interaction coefficient, an optimal temperature-dependent one and a correlation was derived between the coefficient and temperature, based on the values of the optimal temperature-dependent coefficient. The introduction of a temperature dependency on the binary interaction coefficient leads to significant improvement in the accuracy of the model’s bubble point pressure and vapor phase composition calculations. Furthermore, a correlation between the carbon number of normal hydrocarbons and the binary interaction coefficient was concluded, suggesting the potential development of an equation that can provide the optimal binary interaction coefficient at a given temperature and carbon number in future work. To assess the performance of the correlations derived in this work, a comparison was made with another model based on the Peng-Robinson equation of state, UMR-PRU. This involved reproducing the vapor-liquid equilibrium calculations for the binary mixtures examined and performing calculations in multicomponent systems. The analysis demonstrated that the two models yield comparable results, validating the efficiency of the derived correlations.	en
heal.advisorName	Βουτσάς, Επαμεινώνδας	el
heal.advisorName	Voutsas, Epaminondas	en
heal.committeeMemberName	Βουτσάς, Επαμεινώνδας	el
heal.committeeMemberName	Μαγουλάς, Κωνσταντίνος	el
heal.committeeMemberName	Παπαδόπουλος, Γεώργιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών. Τομέας Ανάλυσης, Σχεδιασμού και Ανάπτυξης Διεργασιών και Συστημάτων (ΙΙ). Εργαστήριο Θερμοδυναμικής και Φαινομένων Μεταφοράς	el
heal.academicPublisherID	ntua
heal.fullTextAvailability	false