HIGH-TEMPERATURE THERMOCHEMICAL HEAT STORAGE POWERED BY RENEWABLE ELECTRICITY FOR INDUSTRIAL HEATING APPLICATIONS

Risultati finali

Resistive heating system performance evaluated

The resistive heating system will be developed and tested to ensure that it will provide required operating temperatures while minimizing the overheating of the resistive heating elements. This system will be optimized for the use in the storage module prototype. Referred to task 4.4

First version of dissemination and exploitation plan

The exploitation actions will proceed in parallel and interact with the dissemination activities; both strategies will be reported within three common deliverables. Measures regarding the possibility of patenting the major outcomes and the exploitation (licensing/royalty agreements) of the produced results, monitoring of plans, progress and generation of exploitable results. Referred to Task 7.2.

Finalized morphology and geometry of the redox oxide based porous structure

The optimized redox material will be developed in foam and honeycomb structures with different morphology and geometries. These structures will be evaluated for stability, porosity void fraction, pore size distribution, and surface area after going through the expected operating conditions. Referred to tasks 1.3 and 1.4

Shortlist of redox compositions identified via computational screening process as in principle promising for further development

A first shortlist of most promising redox materials via computational screening using Density Function Theory (DFT) and thermodynamic calculations. For these calculations, commercial software and in-house built codes will be used. Referred to task 1.1

The synthesized redox material will be tested for thermomechanical stability after several redox cycles (> 50). The mechanical tests will be performed before and after cyclic operations to assess the mechanical strength, thermal shock resistance, and structural integrity of the redox material. Referred to task 2.3

Detailed report on the potential renewable power-toheat pathways integrated with heat storage systems for large-scale/industrial applications

A detailed market search to identify the potential power-to-heat pathways for the HERCULES system will be performed and a comparative analysis will be ensued to determine the benefits and drawbacks of the proposed technology with the current solutions. Referred to task 6.4

Project’s website, protected acronym, electronic communications network

Launch of projects website, protected acronym, electronic communications network and social media account. Referred to Task 7.1

Quality and risk management plan

Quality and risk management plan will provide main procedures and rules on the quality assurance and risk management of the project. Referred to task 8.4

Pore-level coupled model implemented, tested and compared to continuum model

The direct pore level numerical simulation of fluid flow, species transport, heat transfer, and chemical reaction using micro-computer tomography-derived 3D representations of the microgeometry of the porous reactive bed, will be performed. This model will be used to study the effective medium properties and pore level coupled processes. Referred to task 3.2

Report on thermophysical properties of the reactive material at the relevant temperatures

Thermophysical properties (reaction enthalpy, heat capacity, effective thermal conductivity, heat transfer coefficient) and energy storage density of the optimized metal oxide will be determined using commercial and in-house built measurement systems. Referred to task 2.1

Report on thermomechanical properties of the synthesized redox material structure

The thermo-mechanical properties such as microstructure, density, porosity, pore size distribution, permeability, refractoriness, mechanical strength, and thermal shock resistance will be comparatively evaluated for the synthesized structures using Hg and N2 porosimetry, XRD, SEM, and mechanical strength and thermal shock resistance tests. Possible failure mechanism will be identified and corrective actions for the improvement of reactive material will be taken. Referred to task 2.2.

Second version of dissemination and exploitation plan

The exploitation actions will proceed in parallel and interact with the dissemination activities; both strategies will be reported within three common deliverables. Measures regarding the possibility of patenting the major outcomes and the exploitation (licensing/royalty agreements) of the produced results, monitoring of plans, progress and generation of exploitable results will be updated. Referred to Task 7.2.

Redox material reactivity results after cyclic operation

The optimized redox material porous structures will be tested for the long-term cyclic operations (at least 200 cycles) to determine the potential loss in oxygen transfer activity, reaction enthalpy, and/or thermal performance stability. Referred to task 1.5

Chemical kinetics model of the redox material

The intrinsic oxidation and reduction kinetics of the redox material will be determined using TGA analysis. The effect of variation of oxygen partial pressure during reactions will also be considered. Referred to task 2.4Report on thermomechanical properties of the synthesized redox material structure

Finalized list of container and insulation materials

A list of suitable storage container and insulation materials based on thermal conductivity, mechanical and structural strength at higher-temperatures (> 1100 oC), operating temperature, corrosion, and cost will be determined. These materials will be further developed in this WP for the storage module fabrication and testing. Referred to task 4.1

Screening LCA and preliminary techno-economic report of selected cases, including list of sustainable and environmental-friendly material selection

For providing guidelines to the redox material selection, a preliminary techno-economic analysis and a life cycle assessment (LCA) that includes drawbacks and risks, environmental impact, resource use etc. will be performed. These results will support the further development of the storage module and the system overall. Referred to tasks 6.1 and 6.3

Geometry and size of the thermochemical heat storage module suitable for the prototype scale testing

A coupled model incorporating heat transfer and chemical kinetics in the reactive material porous matrix will be developed and used to determined the geometry and size of the heat storage module. This model will also provide the optimized locations of the heating elements within the storage system. Referred to task 3.1

Data management plan

Data Management Plan distinguishing data as private, publishable and Open Access, and defining the main criteria adopted to distinguish among them. Referred to Task 8.5

Pubblicazioni

Numerical study of a copper oxide-based thermochemical heat storage system

Autori: Zhen Cao, Bas Joris de Leeuw, Tianchao Xie, Abhishek K. Singh
Pubblicato in: Case Studies in Thermal Engineering, Numero 63, 2024, ISSN 2214-157X
Editore: Elsevier BV
DOI: 10.1016/j.csite.2024.105315

Optimising Conjugate Transfer in Porous Structures: The Role of Flow Instabilities and Structural Defects

Autori: J. Gebbeken, N. S. Vlachos, W. Rohlfs, Abhishek K. Singh
Pubblicato in: Proceeding of THMT-25 Turbulence, Heat and Mass Transfer 11, 21-25 July 2025, Tokyo, Japan, 2025
Editore: Begellhouse
DOI: 10.1615/THMT-25.1040

Numerical Modeling of a High-Temperature Thermochemical Heat Storage Reactor

Autori: T. Xie, J. Gebbeken, Zhen Cao, I. Doliou, K. Fotiadis, Martin Roeb, C. Agrafiotis, G. Karagiannakis, N. S. Vlachos, Abhishek K. Singh
Pubblicato in: Proceeding of THMT-25 Turbulence, Heat and Mass Transfer 11, 21-25 July 2025, Tokyo, Japan, 2025
Editore: Begellhouse
DOI: 10.1615/THMT-25.1160

Risultati dei progetti

Risultati finali

Pubblicazioni

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