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Experimental and numerical analyses of a phase change storage unit

Johnson, Maike and Breidenbach, Nils and Laing, Doerte and Hachmann, Bernd (2013) Experimental and numerical analyses of a phase change storage unit. In: 2013 American-Solar-Energy-Society Annual Conference (SOLAR 2013). SOLAR 2013, 16.-19.04.2013, Baltimore, Maryland, USA.

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Thermal storage technologies are key components for increasing energy efficiency and assisting the integration of regenerative energy sources in the energy market. One type of thermal energy storage is latent heat storage, which makes use of the large amount of enthalpy that can be stored during the phase change of a storage material, and is an interesting storage technology for both high temperature and process steam processes. However, the rate of heat transfer into and out of the storage is a limiting factor for fast discharges, due to the inherently low rate of heat transfer of the storage materials. In order to enhance the rate of heat transfer in latent heat storage units, heat transfer structures have been developed and tested at DLR. Various fin designs have been analyzed and tested. To analyze the effectiveness of more complex geometries, a finite element method analysis method has been developed. Concurrently, physical storage units have been tested. Based on the results from the testing of a fin design in a demonstration storage unit, a new fin was designed. This fin shows good results in the laboratory environment. In this paper, the results from the finite element method analysis and those of a lab-scale latent heat storage unit with the new fin design are compared and discussed.

Item URL in elib:https://elib.dlr.de/89310/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental and numerical analyses of a phase change storage unit
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Johnson, Maikemaike.johnson (at) dlr.deUNSPECIFIED
Breidenbach, Nilsnils.breidenbach (at) dlr.deUNSPECIFIED
Laing, Doertedoerte.laing (at) dlr.deUNSPECIFIED
Hachmann, Berndbernd.hachmann (at) broekelmann.comUNSPECIFIED
Journal or Publication Title:2013 American-Solar-Energy-Society Annual Conference (SOLAR 2013)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iD
Allen, Brian G.ballen@ases.orgUNSPECIFIED
Keywords:Latent heat, thermal energy storage, axial fin
Event Title:SOLAR 2013
Event Location:Baltimore, Maryland, USA
Event Type:international Conference
Event Dates:16.-19.04.2013
Organizer:American Solar Energy Society
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Johnson, Maike
Deposited On:11 Jun 2014 09:21
Last Modified:11 Jun 2014 09:21

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