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A Compact Thermally Driven Cooling System Based on Metal Hydrides

Weckerle, Christoph and Dörr, Marius and Linder, Marc Philipp and Bürger, Inga (2020) A Compact Thermally Driven Cooling System Based on Metal Hydrides. Energies, 13, p. 2482. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/en13102482. ISSN 1996-1073.

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Official URL: https://www.mdpi.com/1996-1073/13/10/2482

Abstract

Independent of the actual power train, efficiency and a high driving range in any weather conditions are two key requirements for future vehicles. Especially during summertime, thermally driven air conditioning systems can contribute to this goal as they can turn the exhaust heat of internal combustion engines, fuel cells or of any additional fuel-based heating system into a cooling effect. Amongst these, metal hydride cooling systems (MHCSs) promise very high specific power densities due to the short reaction times as well as high reaction enthalpies. Additionally, the working fluid hydrogen has a very low global warming potential. In this study, the experimental results of a compact and modular MHCS with a specific cooling power of up to 585 W kg− MH 1 referred to one cold generating MH are presented, while reactor and MH weight in total is less than 30 kg and require a volume < 20 dm3. The system is driven by an auxiliary fuel heating system and its performance is evaluated for different operating conditions, e.g., temperature levels and half-cycle times. Additionally, a novel operation optimization of time-shifted valve switching to increase the cooling power is implemented and investigated in detail.

Item URL in elib:https://elib.dlr.de/135075/
Document Type:Article
Title:A Compact Thermally Driven Cooling System Based on Metal Hydrides
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Weckerle, Christophcchristophweckerle (at) gmx.dehttps://orcid.org/0000-0001-9333-949X
Dörr, Mariusmarius.doerr (at) gmx.deUNSPECIFIED
Linder, Marc PhilippMarc.Linder (at) dlr.deUNSPECIFIED
Bürger, Ingainga.buerger (at) dlr.deUNSPECIFIED
Date:May 2020
Journal or Publication Title:Energies
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI :10.3390/en13102482
Page Range:p. 2482
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Refrigeration, Air Conditioning and Heat Pumps: Energy and Environmental Issues II
ISSN:1996-1073
Status:Published
Keywords:metal hydride; metal hydride cooling system; air conditioning; sorption system; thermal management
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: Bürger, Inga
Deposited On:09 Jun 2020 12:32
Last Modified:23 Jun 2020 08:33

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