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Air-conditioning system for vehicles with on-board hydrogen

Meier, Katharina and Kurz, Christoph and Weckerle, Christoph and Hubner, Markus and Bürger, Inga (2017) Air-conditioning system for vehicles with on-board hydrogen. Applied Thermal Engineering, 129, pp. 1150-1159. Elsevier. doi: 10.1016/j.applthermaleng.2017.10.087. ISSN 1359-4311.

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Official URL: https://doi.org/10.1016/j.applthermaleng.2017.10.087


Electric vehicles with on-board hydrogen store not only the corresponding chemical energy of the H2, but also a significant amount of potential energy in the pressurized gas. This energy is provided by a compressor at the fueling station and so far, it is wasted by throttling the H2 to the fuel cell supply pressure. An ‘‘open” metal hydride cooling system can convert part of this potential energy into cooling power. In this publication, results for an experimental lab-scale setup of such a cooling system are presented and discussed in the vehicle context. The lab-scale system consists of two plate heat exchanger based reactors filled with 335 g and 353 g of Hydralloy C5 hydride material. At 10 °C an average cooling power of -532W or -586W could be determined for cycling times of 100 s or 75 s, respectively. Due to the small lab-scale reactors used in this study, this value is reduced to -76 W, when the efficient cooling power between 30 °C and 10 °C is determined. To conclude the results, scale-up effects and the relation of hydrogen flow and cooling power are discussed as well as a possible integration into a vehicle.

Item URL in elib:https://elib.dlr.de/115210/
Document Type:Article
Additional Information:corresponding author: Inga.buerger@dlr.de
Title:Air-conditioning system for vehicles with on-board hydrogen
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kurz, Christophchristoph.kurz (at) dlr.deUNSPECIFIED
Weckerle, Christophchristoph.weckerle (at) dlr.deUNSPECIFIED
Hubner, Markusmarkus.hubner (at) dlr.deUNSPECIFIED
Bürger, Ingainga.buerger (at) dlr.dehttps://orcid.org/0000-0002-6091-0431
Date:17 October 2017
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.applthermaleng.2017.10.087
Page Range:pp. 1150-1159
Keywords:Metal hydride Air-conditioning Hydrogen Fuel cell vehicles
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 - NGC-Energiemanagement (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Institute of Vehicle Concepts
Deposited By: Bürger, Inga
Deposited On:21 Nov 2017 13:45
Last Modified:06 Sep 2019 15:16

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