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Experimental and Numerical Investigation of a 4 MWh High Temperature Molten Salt Thermocline Storage System with Filler

Odenthal, Christian and Klasing, Freerk and Knödler, Philipp and Zunft, Stefan and Klasing, Freerk (2020) Experimental and Numerical Investigation of a 4 MWh High Temperature Molten Salt Thermocline Storage System with Filler. AIP Conference Proceedings, 2303 (1), pp. 190025-1. American Institute of Physics (AIP). doi: 10.1063/5.0028494. ISBN 978-0-7354-4037-1. ISSN 0094-243X.

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Official URL: https://aip.scitation.org/doi/10.1063/5.0028494


In this work a brief introduction into the thermocline molten salt energy storage concept is given. This concept allows storing hot and cold molten salt inside a single tank. By adding a filler material to the storage tank, a large fraction of molten salt can be substituted, thus reducing total cost significantly. For the investigation of the thermocline concept with filler, DLR's test facility for thermal energy storage in molten salts (TESIS) has been equipped with basalt filler material. A total of 166 thermocouples were embedded inside the packed bed to measure the temperature field. This publication presents experimental results of a charging and discharging cycle at 2 kg/s mass flow rate and temperatures between 290°C and 560°C. The inlet temperatures are fed into a numerical model, which showed good agreement with measured temperatures inside the storage volume, if some bypasses of the bulk flow are considered. Some inconsistencies were identified which need to be addressed in the future.

Item URL in elib:https://elib.dlr.de/131377/
Document Type:Article
Title:Experimental and Numerical Investigation of a 4 MWh High Temperature Molten Salt Thermocline Storage System with Filler
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Odenthal, Christianchristian.odenthal (at) dlr.dehttps://orcid.org/0000-0003-0041-5751
Klasing, FreerkFreerk.Klasing (at) dlr.dehttps://orcid.org/0000-0002-7079-9220
Knödler, PhilippPhilipp.Knoedler (at) dlr.deUNSPECIFIED
Zunft, StefanStefan.Zunft (at) dlr.dehttps://orcid.org/0000-0002-8499-3067
Klasing, FreerkFreerk.Klasing (at) dlr.dehttps://orcid.org/0000-0002-7079-9220
Date:11 December 2020
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/5.0028494
Page Range:pp. 190025-1
Publisher:American Institute of Physics (AIP)
Series Name:AIP Conference Proceedings
Keywords:TESIS, thermal energy storage; molten salt; Flüssigsalz;
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) (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Odenthal, Christian
Deposited On:16 Dec 2020 14:16
Last Modified:19 Jan 2021 04:13

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