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Publication
Assessment of an Innovative Way to Store Hydrogen in Vehicles
| Name: | Description: | Size: | Format: | |
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| 2.61 MB | Adobe PDF |
Advisor(s)
Abstract(s)
The use of hydrogen as an alternative to fossil fuels for vehicle propulsion is already a
reality. However, due to its physical characteristics, storage is still a challenge. There is an innovative
way, presented in this study, to store hydrogen in conventional vehicles propelled by spark-ignition
reciprocating engines and fuel cells, using hydrogen as fuel; the storage of hydrogen will be at high
pressure within small spheres randomly packed in a tank, like the conventional tank of fuel used
nowadays in current vehicles. Therefore, the main purpose of the present study is to assess the
performance of this storage system and compare it to others already applied by car manufacturers in
their cars. In order to evaluate the performance of this storage system, some parameters were taken
into account: The energy stored by volume and stored by weight, hydrogen leakage, and compliance
with current standards. This system is safer than conventional storage systems since hydrogen is
stored inside small spheres containing small amounts of hydrogen. Besides, its gravimetric energy
density (GED) is threefold and the volumetric energy density (VED) is about half when compared with
homologous values for conventional systems, and both exceed the targets set by the U.S. Department
of Energy. Regarding the leakage of hydrogen, it complies with the European Standards, provided a
suitable choice of materials and dimensions is made.
Description
Keywords
Energy storage system Hydrogen Permeation Packing factor Vehicle propulsion