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    Research funding for the energy turnaround increasing

    Energy research contributes towards the development of the processes and technologies necessary for achieving the goals of the energy turnaround. The German government has been continuously increasing funding for energy research since 2006. In 2013 alone, it spent 100 million euros more on this than in the prior year. This reinforced above all the research areas of energy efficiency and renewable energy sources. It provided just under 300 million euros for each of these subjects.  more...
     

    Energy-saving production of special-purpose glass

    Glass production is very energy-intensive. Depending on the size and efficiency of the melting furnace, it requires roughly four to nine gigajoules per tonne. Researchers at Schott are using a new method to optimise the refinement step in the production of special-purpose glass. Using an uncooled crucible saves about 40 per cent energy.  more...
     
    News 19.05.2014

    Rotating receiver heats up ceramic beads

    Until now, tube receivers have been used in solar tower power plants to absorb the concentrated solar rays and convert them into heat. The German Aerospace Centre (DLR) is now pursuing a new approach. In a rotating receiver, ceramic particles are evenly heated up to 1,000 degrees Celsius. The advantage of this is that the beads also act as a storage medium. The centrifugal receiver at the Jülich solar tower is scheduled to enter operation from mid-2015.  more...
     

    Degreasing aluminium foil using corona treatment

    Rolls of aluminium foil commonly used in households have already been in the oven for up to one hundred hours before coming into contact with food. The heat causes the separating agent needed during production to evaporate. Without the grease, the foil cannot be rolled so thinly, and the consumption of aluminium, which requires a considerable amount of energy, would be greater. The aim is to replace the costly degreasing procedure with a corona treatment. During this procedure, high-energy electrons come into contact with the foil. The method can be integrated inline, in other words directly, into the production flow.  more...
     

    Long-term storage system in lime

    What potential is provided by thermochemical storage systems? Researchers at the German Aerospace Centre (DLR) have been pursuing this question. With a new test plant they are investigating the extent to which solar heat can be stored thermochemically for industrial processes and solar power plants.  more...
     

    Solar heat for a cool draught

    The privately-owned Hofmühl brewery in Eichstätt is doing it - and so is the Hütt brewery in Kassel-Baunatal. They use solar heat to support their production processes. With around 1,300 breweries in Germany, there is significant potential here for solar-supported brewing processes. The Department of Thermal Power Engineering at the University of Kassel has published a guide on using solar process heat which describes how this potential can be exploited. Now, scientists are following suit with a detailed concept for the sector.  more...
     

    Using solar roofs twice over

    Instead of screwing various module and collector types for solar power and solar heat on the roof, an obvious idea would be to use a hybrid collector that can do both and which creates a uniform appearance. In addition to generating photovoltaic electricity, which only utilises 15-20 % of the incident solar radiation, a so-called PVT collector can use the remaining radiation energy for generating heat. Researchers are working on optimising the output and production of these systems.  more...
     

    Cooling with heat

    The economic and ecological success of many CHP plants, district heating networks and large-scale solar power systems very much depends on the utilisation of heat outside of the heating periods. An increasingly interesting market for low-temperature heat is cooling and air-conditioning buildings as well as generating process cooling energy with thermally driven chillers. Scientists from Berlin and Bavaria have developed a new generation of particularly compact, efficient absorption chillers with small capacities for cooling and heating operations.  more...
     

    Generating electricity and heat from lean gas

    Large volumes of carbon (coke) are used for the melting process in the cupola furnace, whereby a combustible process gas is formed as a by-product. This so-called cupola furnace gas has a low heating value and has previously been completely combusted for generating the hot blast in the cupola furnace's recuperator. However, in this process only around 35 % of the contained energy is used thermally. Now it is possible to utilise the remaining 65 % of the chemically bound energy that was previously not used in most foundries: a modified biogas combined heat and power plant runs with cupola furnace gas (CFG) from the melting furnace.  more...
     

    Storage systems increasingly in the research spotlight

    Technologies for storing energy will play a decisive role in future. They are essential not just for balancing out the supply of fluctuating renewable resources such as solar power and wind energy but also for continuing to ensure a reliable energy provision. At the same time, storage systems in electric and hydrogen-fuelled vehicles are paving the way for a mobile future beyond the fossil fuel era. Future storage systems formed the focus of attention at the first "Energy Storage Symposium", which was held by the German Aerospace Centre (DLR) at the beginning of March.  more...
     

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