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Design of high temperature thermal energy storage for high power levels

Johnson, Maike and Vogel, Julian and Hempel, Matthias and Hachmann, Bernd and Dengel, Andreas (2017) Design of high temperature thermal energy storage for high power levels. Sustainable Cities and Society, 35, pp. 758-763. Elsevier. DOI: 10.1016/j.scs.2017.09.007 ISSN 2210-6707

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Official URL: http://www.sciencedirect.com/science/article/pii/S2210670717307321?via%3Dihub


A latent heat thermal energy storage unit has been modeled, simulated and designed for integration into a cogeneration plant that supplies steam to industrial customers in Saarland, Germany. The design consists of a vertical bundle of extended finned tubes surrounded by phase change material in the shell. The heat transfer fluid water/steam flows through the tubes between the upper and lower headers. A new fin design was developed to achieve the required high power levels. The storage system was designed and analyzed with the development of an iterative multi-step method. The method spans from the design of the fin, based on both empirical and geometrical information, to the heat transfer analysis of a storage system. The analysis is comprised of several steps: a heat transfer analysis of the cross-section of one tube without modeling the heat transfer fluid, a transfer from the cross-section to a simplified one-dimensional radial model and a two-dimensional axial and radial analysis coupling the axial flow of the heat transfer fluid and the radial heat transfer into the storage. The developed analysis method and the resulting storage system are presented and the comparison of different fin designs shows the suitability of each fin for different applications.

Item URL in elib:https://elib.dlr.de/114560/
Document Type:Article
Title:Design of high temperature thermal energy storage for high power levels
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Johnson, Maikemaike.johnson (at) dlr.deUNSPECIFIED
Vogel, Julianjulian.vogel (at) dlr.dehttps://orcid.org/0000-0001-9792-2332
Hempel, Matthiasmatthias.hempel (at) dlr.deUNSPECIFIED
Hachmann, Berndbernd.hachmann (at) broekelmann.comUNSPECIFIED
Dengel, Andreassteag new energiesUNSPECIFIED
Date:November 2017
Journal or Publication Title:Sustainable Cities and Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.scs.2017.09.007
Page Range:pp. 758-763
Keywords:Latent heat Thermal energy storage PCM Extended fin Integration Cogeneration
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Johnson, Maike
Deposited On:24 Nov 2017 14:36
Last Modified:31 Jul 2019 20:12

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