Abstract
In-situ and transient visualizations of the packing structure of a hydrogen storage alloy bed are carried out using an X-ray computed tomography (CT) system. The packing structure is clearly observed on the microscale using the CT system. When the alloy bed is subjected to hydrogen absorption-desorption cycles, the pulverization progresses from the lower to the upper regions of the bed. After several hydrogen absorption-desorption cycles, the packing structure in the lower region of the bed changes and the microstructural void decreases slightly. Based on these results, we propose a pulverization mechanism of the packed bed in which the friction between particles affects the pulverization process.
Original language | English |
---|---|
Pages (from-to) | 10715-10723 |
Number of pages | 9 |
Journal | International Journal of Hydrogen Energy |
Volume | 37 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2012 Jul |
Keywords
- Computed tomography
- Metal hydride
- Packed bed
- Pulverization
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology