elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Numerical investigation of hydrogen charging performance for a combination reactor with embedded metal hydride and coolant tubes

Bhouri, Maha and Bürger, Inga and Linder, Marc (2015) Numerical investigation of hydrogen charging performance for a combination reactor with embedded metal hydride and coolant tubes. International Journal of Hydrogen Energy, 40 (20), pp. 6626-6638. Elsevier. DOI: 10.1016/j.ijhydene.2015.03.060 ISSN 0360-3199

[img] PDF (Postprint-Bhouri)
2MB

Abstract

A two-dimensional model investigating the hydrogen charging process in a combination reactor filled with both LaNi4.3Al0.4Mn0.3 and 2LiNH2-1.1MgH2-0.1LiBH4-3 wt.%ZrCoH3 materials has been developed. The selected configuration is a cylindrical reactor of 32 cm of diameter where the MeH is filled in annular tubes separated from the complex hydride bed by a gas permeable layer. The diffusion of hydrogen towards the two storage media is ensured by filters embedded in the middle of the MeH tubes whereas the coolant tubes are placed in the centre of their triangular arrangement. Simulation results have shown that the charging process depends on the MeH reaction heat required for the initiation of the CxH reaction as well as the heat management once the complex hydride starts to store hydrogen. High hydrogen storage rates and short refueling times can be obtained by increasing the number of MeH and coolant tubes and ensuring an efficient heat removal at the peripheral area of the CxH media. A refueling time of 3 min is achieved for an optimum configuration of 49 MeH tubes and 96 coolant tubes while increasing the thermal conductivity of the CxH media to 3.5 W/(m K). Such a result could make the identified optimum configuration as a suitable hydrogen storage system for fuel cell forklift trucks since it meets the requirements of this application in terms of weight and size.

Item URL in elib:https://elib.dlr.de/96268/
Document Type:Article
Title:Numerical investigation of hydrogen charging performance for a combination reactor with embedded metal hydride and coolant tubes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bhouri, Mahamaha.bhouri (at) dlr.deUNSPECIFIED
Bürger, Ingainga.buerger (at) dlr.deUNSPECIFIED
Linder, Marcmarc.linder (at) dlr.deUNSPECIFIED
Date:12 March 2015
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:40
DOI :10.1016/j.ijhydene.2015.03.060
Page Range:pp. 6626-6638
Publisher:Elsevier
ISSN:0360-3199
Status:Published
Keywords:Complex hydride; Metal hydride; Combination reactor; Embedded coolant tubes; Refueling time; 2D simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Fahrzeugenergiesystem III (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Bürger, Inga
Deposited On:11 Jun 2015 10:24
Last Modified:31 Jul 2019 19:53

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.