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Low pressure, high capacity hydrogen storage: The adiabatic storage concept

Lutz, Michael and Linder, Marc Philipp and Bürger, Inga (2019) Low pressure, high capacity hydrogen storage: The adiabatic storage concept. Gordon Research Conference on Hydrogen-Metal Systems 2019, Castelldefels, Spanien.

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Abstract

State of the art hydrogen storage is based on 700 bar pressure tanks. However, compression to such high pressures requires a significant amount of energy reducing the overall efficiency of the system. Hydrogen storage in metal hydrides with high capacities, such as MgH2, is a promising alternative. Nevertheless, it is challenging to provide and withdraw the required heat for the chemical reaction at temperatures of more than 200 °C. To overcome this drawback, a system was proposed integrating a thermochemical heat storage material, such as Mg(OH)2, which stores/releases the heat of reaction for the MgH2 hydrogenation/dehydrogenation. The two materials are in thermal contact to enable rapid heat transfer between them. Heat management with the environment is not necessary. Thus, the storage reactor can be operated adiabatically. The chosen materials are easily available and the system works at pressures less than 40 bar. Additionally, it exhibits a volumetric storage density twice as high as the 700 bar pressure tank. The basic operation principle of such a storage reactor has been published before. In this contribution, first experimental results of a storage reactor prototype will be shown.

Item URL in elib:https://elib.dlr.de/132141/
Document Type:Conference or Workshop Item (Poster)
Title:Low pressure, high capacity hydrogen storage: The adiabatic storage concept
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lutz, Michaelmichael.lutz (at) dlr.deUNSPECIFIED
Linder, Marc PhilippMarc.Linder (at) dlr.deUNSPECIFIED
Bürger, Ingainga.buerger (at) dlr.deUNSPECIFIED
Date:July 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Hydrogen storage, reactor design, Metal hydrides, Thermochemical heat storage
Event Title:Gordon Research Conference on Hydrogen-Metal Systems 2019
Event Location:Castelldefels, Spanien
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Lutz, Michael
Deposited On:16 Dec 2019 15:03
Last Modified:16 Dec 2019 15:03

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