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Simulation of Thermochemical Heat Storage in the CaO/Ca(OH)2- System on the Micro-Scale

Prill, Torben and Jahnke, Thomas and Linder, Marc Philipp (2021) Simulation of Thermochemical Heat Storage in the CaO/Ca(OH)2- System on the Micro-Scale. InterPore German Chapter Meeting 2021, 1.-2. Feb. 2021, Stuttgart, Deutschland.

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Abstract

Thermochemical Energy Storge (TCES) has long been under investigation for prospective applications including the capture of excess heat from industrial processes or storing energy in concentrated solar power plants. Furthermore, TCES in the CaO/Ca(OH)2-System is investigated because of the low price and environmentally friendliness of the reactants. In the project THEMSE, DLR is developing models and simulations for TCES in the CaO/Ca(OH)2-System on the microscopic level. A geometrical microscale characterization of the material is done using a combination of micro computed tomography (µCT) and scanning electron microscopy (SEM). Where SEM can be used to resolve fine scale details, up to crystallites, µCT can resolve particles as well as agglomerates of numerous particles. This is complemented by kinetics, measured by thermogravimetric analysis. The first goal in the project is to explain the measured kinetics using a spatially resolved model, which takes the three-dimensional morphology of the storage material into account. In general, this involves, thermal, hydrodynamic, mechanical, and chemical modeling. However, the first investigations involve a single particle model, where the thermal and hydrodynamic effects can be neglected, and which is solved using finite element simulations. In this talk, we give an overview over the project and the materials involved and we will show first results from kinetic simulations and experiments.

Item URL in elib:https://elib.dlr.de/140992/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation of Thermochemical Heat Storage in the CaO/Ca(OH)2- System on the Micro-Scale
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Prill, TorbenTorben.Prill (at) dlr.deUNSPECIFIED
Jahnke, ThomasThomas.Jahnke (at) dlr.deUNSPECIFIED
Linder, Marc PhilippMarc.Linder (at) dlr.deUNSPECIFIED
Date:February 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermochemische Energiespeicher, Modellierung, Simulation
Event Title:InterPore German Chapter Meeting 2021
Event Location:Stuttgart, Deutschland
Event Type:national Conference
Event Dates:1.-2. Feb. 2021
Organizer:InterPore German Chapter
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Computational Electrochemistry
Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Prill, Torben
Deposited On:15 Jun 2021 17:22
Last Modified:15 Jun 2021 17:22

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