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Thermal effects in dynamic storage of hydrogen by adsorption
Author(s) -
Lamari Malek,
Aoufi Asdin,
Malbrunot Pierre
Publication year - 2000
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690460322
Subject(s) - adsorption , hydrogen storage , hydrogen , activated carbon , mass transfer , packed bed , thermal , heat transfer , volumetric flow rate , thermal energy storage , thermodynamics , mass flow rate , chemistry , materials science , carbon fibers , chemical engineering , composite material , chromatography , organic chemistry , physics , composite number , engineering
Thermal effects in dynamic hydrogen storage by adsorption at room temperature and high pressure are studied theoretically and experimentally. The system of adsorbate–adsorbent used was hydrogen in granular activated carbon. The theoretical analysis was based on heat‐ and mass‐transfer modeling in a packed‐bed adsorber, with particular emphasis on the thermal effects occurring during charge and discharge steps. The influence of gas flow rate and storage pressure (up to 15 MPa) on the total amount stored or delivered was investigated. Operating conditions were compatible with practical application for onboard vehicle storage. The experimental study was carried out in cylindrical 2‐L reservoirs filled with granular activated carbon in which the bed temperature was measured at various positions. The temperature changes during both charge and discharge agreed well with the model predictions.