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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.

Electrical Storage

Electrical Storage | BMWi
Power-heat systems 12.4.2017

Network storage with hybrid photovoltaic system

Researchers develop new strategies for the operation of hybrid photovoltaic systems in residential buildings and small businesses. For this purpose, the scientists optimize the operation management by simulations and laboratory measurements in the project INE-VES. The optimized operations management will increase the benefit of the system for the power grid, as well as for the owner. ... more


Physical Storage

Physical Storage | BMWi
Huge water tanks for buildings 1.7.2016

Hot water storage tank

Scientists develop a new type of hot water tanks with volumes between 5 to 100 m³ for outdoor use. The specific costs shall reach from 750 to 900 €/m³. Additionally the thermal ability of the tanks will be improved significantly by adding a combination of innovative concepts. ... more


Physical Storage | BMWi
Phase-change material (PCM) 11.4.2017

Increase dynamism with three-dimensional wire mesh

To equip modular storage units for a temperature range of 150 to 350 degrees Celsius and achieve high energy and power densities at the same time, is the declared aim of the researchers in the MOSPEDRA-project. The scientists first need to increase the dynamics of the memory modules. They want to achieve with a new metallic thermal wire mesh, which is embedded in a phase-change material. ... more


Physical Storage | BMWi
Latent heat storage 1.10.2015

Waste heat used for production of precast concrete

Researchers develop new components in the project ENBELAT. To use the hydration heat they provide concrete precast molds with a heat recovery and save the heat in a latent heat storage. This increases the quality and helps the energy consumption to be reduced 45 percent. ... more


Physical Storage | BMWi
PCM storage 12.4.2017

Cheaper slurries for cooling processes

In order to reduce the cost of PCM storages, scientists develop new slurries and materials for cold storages. The aim of the project KOLAN is to develop an emulsion with a very high heat capacity. At a temperature difference of 6 Kelvin it should store about four times more heat than water. ... more


Physical Storage | BMWi
Latent heat storage 2.2.2016

New economical phase change material

Scientists at the University of Bayreuth are optimizing mobile latent heat storages. In the project MALATrans they improve charging and discharging capacity of the heat storages and analyse how the manufacturing costs can be reduced. The phase change materials they are working with are macroencapsulated. ... more


Thermal 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
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 | BMBF
Organic PCM 5.9.2016

Phase change material is crystallised

With micro-encapsulated or emulsified organic phase change materials, the solidification temperature is frequently below the melt temperature. This so-called undercooling is a hindrance for many applications. By means of systematic investigations, the researchers achieved a fundamental understanding of the physical principles. Based on the experimental findings, models developed that make it possible to forecast the crystallisation properties. ... 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


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

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