Scaling up effects of Mg hydride in a temperature and pressure-controlled hydrogen storage device

A research program addressed to evaluate the magnesium hydride storage scaling up effects is being developed by CESI RICERCA, Milano, and the Hydrogen Group of Padova University. A storage device containing 500g of magnesium hydride powder (manufactured by Venezia Tecnologie S.p.A. using high-energy...

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Bibliographic Details
Published in:International journal of hydrogen energy 2009-05, Vol.34 (10), p.4602-4610
Main Authors: Verga, M., Armanasco, F., Guardamagna, C., Valli, C., Bianchin, A., Agresti, F., Lo Russo, S., Maddalena, A., Principi, G.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Ball milling
Devices
Energy
Exact sciences and technology
Fuels
Hydrides
Hydrogen
Hydrogen storage
Magnesium
Magnesium hydride
Scaling up
Storage capacity
Storage device
Tanks
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Summary:A research program addressed to evaluate the magnesium hydride storage scaling up effects is being developed by CESI RICERCA, Milano, and the Hydrogen Group of Padova University. A storage device containing 500g of magnesium hydride powder (manufactured by Venezia Tecnologie S.p.A. using high-energy ball milling) has been designed and tested in different operating conditions. A number of absorption and desorption cycles at different temperatures and pressures has been carried out in order to see if the results are comparable with laboratory data obtained on small amounts (fractions of grams) of powder samples. A sensible performance degradation that reduced the overall storage capacity of about 50% has been noticed after 20 cycles, presumably due to local powder heating, fragmentation and subsequent compaction. Further tests on a smaller tank equipped also with a porous baffle gave useful indications for the design of an improved large hydrogen reservoir.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2008.08.043