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Focus of the funding initiative

Storing heat

In the various research networks, researchers are working on improving the components and structure of known technologies, for example, using new and less costly materials. One particular focus is on latent heat storage and sorption storage systems. The main application areas are storage for conventional and solar thermal power plants, for current-regulated CHP plants, seasonal storage for buildings, and storage facilities that simplify the management of heating networks.

long-term storage

Thermal Storage | BMBF
Composite Material 18.10.2016

Increasing the storage density with salt hydrates

How can solar energy be stored better? For optimisation purposes, scientists in the ThessaPor project are developing composite materials that store solar energy thermochemically. The composites are structured so that an inorganic salt is stored in them. This makes it possible to combine the advantages of water vapour sorption storage systems with the advantages of storage systems based on the reversible hydration of salts. ... more

Thermal Storage | BMWi
Long-term storage 9.1.2017

Saisonal storage in aquifers

Aquifers have a large storage capacity and offer considerable potential as seasonal thermal or cooling storage systems. In a research project, researchers developed an improved storage concept for supplying heating and cooling energy to buildings and entire urban districts. For this purpose, they are combined the expertise from various specialist areas such as energy technology, geochemistry, hydrogeology, architecture and urban development. ... more

Thermal Storage | BMBF
Absorption-storage system 12.4.2017

Drying with open sorption processes

A junior research group investigated heat and material transfer to an aqueous solution of lithium chloride. Such salt solutions can be used for air conditioning in buildings or waste heat. At the same time it serves as an energy storage. In addition to the salt solutions young researchers testing and synthesizing new sorbents. Also system simulations for building heating and air conditioning are planned in addition to drying applications. ... more

Thermal Storage | BMWi
Composite materials 7.7.2016

Latent heat storage for central heating

Scientists at the Institute of Thermodynamics and Thermal Engineering at the University of Stuttgart developed with partners in the project EnErChem a thermochemical energy storage for building heating ins ingle-family and multi-family houses. A demonstration plant shows that the memory can withstand under real conditions. ... more

Thermal Storage | BMWi
Sorption heat storage 12.4.2017

Sorptive heat storage using activated carbon

Activated carbon can be produced from a large variety of carbonaceous source materials. Different methods have also been established for the process steps of carbonization and activation for use in commercial applications. In the project HyAcitv researchers optimize activated carbons and in a further step, molded articles are produced for use in open sorption systems. The application of these moldings is demonstrated in a laboratory storage system. .

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Thermal Storage | BMWi
Heat storage system in a mine 4.7.2017

Storing heat in mines

What happens to mines that are no longer in use? Could they be used to store heat? Researchers at the International Geothermal Centre are hoping to find out whether mines could be put to this use and are conducting tests in the former Prosper-Haniel hard-coal mine in the Ruhr region to investigate whether it is suitable for heat storage. .

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short-term storage

Thermal Storage | BMWi
Salthydrates 14.3.2016

Cooling of buildings using new salthydrates

In the project PC-Cools_V two new phase change materials (PCM) on a salthydrate basis with a narrow melting range around 21°C and around 15°C are developed. The latter was intended for the implementation in central cold storages whereas the PCM melting at 21°C was designed for a decentral, room integrated storage application, especially cooling ceilings. ... more

Thermal Storage | BMWi
Industrial waste heat utilisation 12.9.2017

Foundry using waste heat of the furnace

In energy-intensive industries, e.g. foundry industry or cement industry, the use of waste heat for example as process or space heating energy reduces the consumption of primary energy.  In the Project “IAST” researchers are testing an energy storage system for discontinuous industrial waste heat of a furnace at a foundry. The implementation and commissioning is expected to start at the end of 2014. ... more

Thermal Storage | BMWi
Latent heat storage based on salt 18.7.2016

„SALSA“ makes steam and waste heat useable

The Fraunhofer Institute for Solar Energy Systems ISE, Novatec Solar and Köllemann are developed a salt-based latent heat storage called SALSA. This is to used for waste heat recovery in industrial processes. In the end of 2016, the storage was integrated and tested in the southern Spanish power plant PE1. ... more

Thermal Storage | BMBF
Thermochemical solid heat accumulators 1.2.2016

Heat storage in smallest volume

Thermochemical heat storage can achieve low cost because of its higher specific energy density as compared with conventional heat storage materials. However, the thermal conductivity of the material is limited. Therefore, scientists at the Fraunhofer UMSICHT developed new thermochemical storage materials. The researchers intend to increase the thermal conductivity of solids, specifically through the addition of special additives. ... more

Supported by: The Federal Government on the basis of a decision by the German Bundestag


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