MoWiE • Modular heat storage systems for industrial use
The MoWiE research project is developing a modular latent heat storage system that harnesses surplus heat from industry.
MoWiE • Modular heat storage systems for industrial use
As part of the collaborative project ‘Modular Heat Storage Systems for Industrial Use’ (MoWiE), the DLR Institute of Technical Thermodynamics, the DLR Institute for Low-Carbon Industrial Processes, SIK Peitz, Progroup and Knauf Interfer Aluminium are developing a robust and efficient latent heat storage module for industrial use. It is being characterised and operated at a Progroup waste-to-energy power station in Eisenhüttenstadt.
Thermal energy storage during manufacturing
Image: 1/3, Credit:
SIK Peitz GmbH
Thermal energy storage during manufacturing, completion of the outer walls
Image: 2/3, Credit:
SIK Peitz GmbH
Pressure vessel testing of the heat exchanger components of the thermal energy storage
Image: 3/3, Credit:
SIK Peitz GmbH
Why a heat storage system?
If an industrial process generates more steam than is currently required – for example, due to fluctuations in production – this energy can be stored and used at a later date. The latent heat storage system utilises energy more efficiently in this way, reducing emissions and dependence on raw materials.
Schematic of the Integration of the thermal energy storage in the power plant
Image: 1/3, Credit:
SIK Peitz GmbH
Finned tube registers of the thermal energy storage
Image: 2/3, Credit:
Progroup AG/Raphael Smandzich
Thermal energy storage during assembly and completion of the manufacturing
Manufacturing: At SIK Peitz, production of the heat storage tank is in full swing, and assembly is proceeding according to plan. Inside, a total of 1,080 finned tubes are being installed at a height of approximately 6 metres.
Pilot plant: The entire plant was developed – from the initial project concept through to risk assessment and extensive simulations – and designed to meet the requirements of the power station.
Next steps
The next step will be to install the storage system, with a capacity of approximately 12 MW and a storage capacity of approximately 2 MWh, at the power station and connect it to the prepared foundation. The connection of the system components, the installation of thermal insulation and the cold commissioning of the storage system are scheduled to take place at the operational power station by the end of the year. Critical connection work was already carried out during the recent power station overhaul.
Integration of a heat exchanger register into the thermal energy storage
SIK Latent heat storage unit
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SIK Latent heat storage unit
Integration of a heat exchanger register into the thermal energy storage
Credit:
SIK Peitz GmbH
Aim and outcome of the project
The aim is to develop a modular high-temperature latent heat storage system, with a focus on scalability to allow flexible adaptation to various industrial processes, as well as its construction and integration into an existing production process. The project will be implemented in four phases: first, the existing production process at Progroup will be analysed and modelled and validated by the DLR Institute for Low-Carbon Industrial Processes. Building on this, a storage module will be proposed by the DLR Institute of Technical Thermodynamics and designed in detail by SIK; in addition, substitute models of the PCM storage system that are as realistic as possible will be developed, which in turn will be suitably integrated into the virtual system simulation. Subsequently, the demonstration module will be built by SIK, integrated into Progroup’s process and tested. Knauf Interfer Aluminium, as an associated partner, is responsible for the design and will supply the heat-transfer finned tubes integrated into the module. Finally, the results from actual operation (and the storage simulation studies) enable conclusions to be drawn, on the one hand, regarding the system’s performance stability and, on the other hand, regarding its adaptation to a multi-modular storage system.
The outcome of the project is a cost- and energy-efficient construction method for innovative storage modules, as well as a simulation-based methodology for optimal process integration.
MoWiE at a glance
Project
Modular heat storage systems for industrial use (MoWiE)
