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Research and Development

Knowlegde for solar energy generation

On the research level of the Juelich Solar Tower: Setting up of test reactor for solar sulfuric acid splitting, a process step within thermochemical hydrogen production. Source: DLR

The research and development in the field of concentrating solar technologies provided the basis for the commercial use of this technology. Subject of current research are the improvement of existing processes, materials and components and the development of innovations.

The scientists at the Institute of Solar Research cover a large range of research topics. These include the development of parabolic trough technology - the so far in commercial solar thermal power plants most established method -, Fresnel collectors and the exploration of solar tower systems.

Other research topics are the development of new heat transfer materials and the monitoring and evaluation of power plant components. The material research is complemented by works to optimize complete systems such as the operation of power plants under changing radiation conditions. The aim of the researchers is to increase the efficiencies of solar energy and heat generation and thereby reduce the production cost.

Another area is the study of the usability of solar power for applications aside of energy generation - for instance solar water purification.

Further more, for tomorrow's energy supply, Institute scientists explore solar chemical processes for storing solar energy in solar fuels such as hydrogen.

 

Priority research topics and projects:

Line Focus Systems


Parabolic trough collectors are the oldest and commercially most successful technology for solar thermal power plants. The department for line focus systems is situated in Almería, Cologne and Stuttgart. We work on relevant issues concerning line focus systems in the entire spectrum from basic research and theory, over experimental and numerical methods up to demonstration under real operating conditions including economic evaluation.
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Point Focus Systems


In so called point focus systems the direct solar radiation is focused with mirrors on a point-like focal spot. Distinctions are made between two different technologies: solar tower and dish systems. The focus of research at DLR is on the development of solar tower systems and their components.
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Qualification


Individual components and collector systems, their interplay in the system of a power plant, and the meteorological conditions of a location have a strong impact on the performance and cost efficiency of solar power plants. We, therefore, develop measurement techniques which can be used to study and evaluate these factors. The results are used to identify and apply possible improvements of the components and systems.
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Solar Energy Meteorology


Meteorological information is essential for the design, the operation and the qualification of CSP plants and their components. The scientists in the working group “Solar Energy Meteorology” determine the meteorological parameters that are relevant for solar energy and analyze their effect on the performance of solar power plants.
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Energetische Gebäudebwertung


Eine der großen Herausforderungen der Energiewende im Bereich Wärme ist, den hohen Anteil von älteren Gebäuden am Gesamtbestand energetisch zu sanieren, um ihren Heizwärmebedarf zu senken. DLR-Forschende entwickeln eine schnelle, präzise und kostengünstige Methode zur Charakterisierung der Eigenschaften von Gebäudeaußenwänden und Dachflächen, welche als Grundlage für Maßnahmen zur Verbesserung der Energieeffizienz dient.
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Ongoing Research Projects (extract)


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