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

A metal hydride air-conditioning system for fuel cell vehicles — Functional demonstration

Weckerle, Christoph and Nasri, Mounir and Hegner, Robert and Linder, Marc Philipp and Bürger, Inga (2020) A metal hydride air-conditioning system for fuel cell vehicles — Functional demonstration. Applied Energy, 259, p. 114187. Elsevier. DOI: 10.1016/j.apenergy.2019.114187 ISSN 0306-2619

[img] PDF - Registered users only - Postprint version (accepted manuscript)
1MB

Official URL: https://doi.org/10.1016/j.apenergy.2019.114187

Abstract

High pressure storage of hydrogen is the established storage technology for automotive systems. However, around 15% of the lower heating value of hydrogen is spent to compress hydrogen up to the pressure of 700 bar. Since this energy is available on board but so far wasted, an open air-conditioning system based on metal hydrides is promising to reutilize this compression work. Here we present the experimental demonstration of a first of its kind system. The setup consists of two alternately operating plate reactors, each filled with around 1.5 kg of Hydralloy C2 (Ti0.98Zr0.02V0.41Fe0.09Cr0.05Mn1.46), coupled to a polymer electrolyte membrane fuel cell. The demonstration at an electrical power of 5 kW shows that the fuel cell operation is not affected by the alternately H2 desorbing reactors (half-cycle duration of 150 s). The system’s average cooling power was 662 W for an ambient temperature of 30 °C and a cooling temperature of 20 °C, reaching of specific cooling power of 227 W kgMH −1 . Related to the maximum obtainable cooling power of 18.3% of the electrical fuel cell power, the cooling efficiency corresponds to 75%. As an innovative hydrogen pressure transducer the presented system can be transferred to all applications where an unused hydrogen pressure difference is available.

Item URL in elib:https://elib.dlr.de/130860/
Document Type:Article
Title:A metal hydride air-conditioning system for fuel cell vehicles — Functional demonstration
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Weckerle, ChristophChristoph.Weckerle (at) dlr.deUNSPECIFIED
Nasri, MounirMounir.Nasri (at) dlr.dehttps://orcid.org/0000-0002-0626-482X
Hegner, RobertRobert.Hegner (at) dlr.deUNSPECIFIED
Linder, Marc PhilippMarc.Linder (at) dlr.deUNSPECIFIED
Bürger, Ingainga.buerger (at) dlr.deUNSPECIFIED
Date:2020
Journal or Publication Title:Applied Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:259
DOI :10.1016/j.apenergy.2019.114187
Page Range:p. 114187
Publisher:Elsevier
ISSN:0306-2619
Status:Published
Keywords:Metal hydrides Hydrogen Fuel cell vehicles Air-conditioning
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
Institute of Vehicle Concepts
Deposited By: Bürger, Inga
Deposited On:17 Dec 2019 16:51
Last Modified:20 Jan 2020 11:16

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.