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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. In: 2019 International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2019, 2303 (1), pp. 190025-1. American Institute of Physics (AIP). SolarPaces 2019, 2019-10-01 - 2019-10-04, Daegu, South Korea. doi: 10.1063/5.0028494. ISBN 978-073544037-1. ISSN 0094-243X.

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

Abstract

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:Conference or Workshop Item (Speech)
Title:Experimental and Numerical Investigation of a 4 MWh High Temperature Molten Salt Thermocline Storage System with Filler
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Odenthal, ChristianUNSPECIFIEDhttps://orcid.org/0000-0003-0041-5751UNSPECIFIED
Klasing, FreerkUNSPECIFIEDhttps://orcid.org/0000-0002-7079-9220UNSPECIFIED
Knödler, PhilippUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zunft, StefanUNSPECIFIEDhttps://orcid.org/0000-0002-8499-3067UNSPECIFIED
Klasing, FreerkUNSPECIFIEDhttps://orcid.org/0000-0002-7079-9220UNSPECIFIED
Date:11 December 2020
Journal or Publication Title:2019 International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:2303
DOI:10.1063/5.0028494
Page Range:pp. 190025-1
Publisher:American Institute of Physics (AIP)
Series Name:AIP Conference Proceedings
ISSN:0094-243X
ISBN:978-073544037-1
Status:Published
Keywords:TESIS, thermal energy storage; molten salt; Flüssigsalz;
Event Title:SolarPaces 2019
Event Location:Daegu, South Korea
Event Type:international Conference
Event Start Date:1 October 2019
Event End Date:4 October 2019
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, Dr. Christian
Deposited On:15 Mar 2022 14:05
Last Modified:18 Feb 2025 12:29

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