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Development of hydrogen storage systems using Sodium alanate
Citation Link: https://doi.org/10.15480/882.987
Other Titles
Entwicklung von Natriumalanat-basierten Wasserstoffspeichertanks
Publikationstyp
Doctoral Thesis
Date Issued
2010
Sprache
English
Author(s)
Advisor
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2010-12-15
TORE-DOI
Hydrogen storage systems based on sodium alanate are studied, modelled, and optimised, on the basis of both experimental and theoretical approaches. The experimental hydrogen sorption behaviour (kinetics, heat transfer and cycling) of small cells up to kg-scale storage tanks is compared and analysed. In particular the effect of the size of the system, powder compaction, and addition of expanded graphite on the sorption behaviour is investigated and characterized. In order to implement simulations and further evaluations, empirical kinetic models for both hydrogen absorption and desorption of sodium alanate material are developed. The hydrogen sorption process in a storage tank is modelled on the basis of the developed kinetic equations and hydrogen transport and heat transfer equations, and a numerical simulation is developed and validated with the experimental results previously obtained in this work. Optimisation towards the gravimetric hydrogen storage capacity of a tubular storage tank based on sodium alanate is defined and performed by means of the numerical simulation and the experimental results of this work.
Subjects
Metallhydridspeicher
komplexe Hydride
Simulation
Wasserstofftechnologie
Modellierung
metal hydride tanks
complex hydrides
simulation
hydrogen technology
modelling
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