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    News 22.11.2017

    Ring generators are slimming down

    Gearless wind turbines have weight issues. The weight of a generator increases disproportionately with its output. With the current concepts, it will be difficult to pass the 10-megawatt threshold -a class of turbines that is of particular interest to offshore wind farms. In order to solve this problem, researchers are developing a new type of ring generator with a larger diameter but significantly lower weight. A scaled down test generator showed some promising results on the test rig.  more...
     

    On-roof insulation made of cattail plants in development

    Energy-saving in the production, pressure-resistant and compostable: Researchers at the Fraunhofer Institute for Building Physics have high expectations for the insulation boards made from the leaves of the Typha plant. Together with industrial partner Saint Gobain Isover, they are now further developing a board for insulating rafters and preparing its series production.  more...
     
    News 19.10.2017

    “Solar thermal energy is becoming an integral part of district heating”

    Traditional district heating is converging with solar thermal energy: researchers and engineers presented new technologies for integrating solar thermal systems into the heating provision at the German Federal Ministry for Economic Affairs and Energy's status workshop entitled “Solar thermal energy in district heating”, which was held at the end of September in Dresden. In addition, the workshop also provided insights into current developments in Europe and worldwide.  more...
     
    News 17.10.2017

    Refrigerators stabilise the electricity grid

    Refrigerators that consume electricity precisely when the wind and the sun provide excess electrical energy, and which during slack periods maintain their cooling temperature without additional energy input, would greatly relieve the grid. Scientists from ZAE Bayern are investigating the costs and benefits of such a load shift together with industrial partners. For this purpose they are increasing the thermal inertia of an efficient standard refrigerator by installing latent heat storage units. The test device can thereby bridge longer standstill times.  more...
     

    Large-scale solar thermal systems in long-term testing

    Can solar thermal plants achieve a consistently high yield for more than ten years? In order to answer these and other questions, scientists from Düsseldorf University of Applied Sciences have surveyed the operators of 76 large-scale solar thermal plants and monitored ten of these systems for one year. All systems were funded at the turn of the millennium as part of the Solarthermie2000(plus) programme.  more...
     

    Local electricity networks become flexible and resilient

    For three years, the Saarlouis municipal utility company, together with partners from science and industry, has worked on the development of what are known as resilient poly-networks. These autonomous electricity networks at the local level are designed to adapt dynamically to the respective network situation in order to ensure optimum supply. The findings were recently presented at a concluding event.  more...
     

    New low-emission marine engines

    The operation of ships causes considerable pollutant emissions. Future ship propulsion systems must therefore be more environmentally friendly. One possible way is to operate engines with natural gas rather than diesel. They have lower emissions when compared with current diesel engines without exhaust after-treatment. Researchers are developing and testing components and control instruments for this economical new generation of engines. They are aiming to reduce the engines' CO2 emissions and halve them in future.  more...
     

    When wind energy goes to school

    Pupils have now gone back to school in all of Germany's federal states, and the curricula for the new school year have been set. Experts led by the Independent Institute for Environmental Issues (UfU) have investigated how renewable energies can be better integrated into lessons as a subject area. For this purpose they have developed teaching materials and analysed the benefits and potential of wind turbines and photovoltaic systems at educational facilities.  more...
     

    Foundry utilises waste heat from the melting furnace

    Together with industrial partners, researchers at ZAE Bayern are developing a cost-effective energy storage system for industrial waste heat. It shall enable discontinuously generated waste heat to be utilised for processes for which this has previously not been done for economic reasons. The implementation phase has now begun. The scientists want to put a demonstration plant into operation in the spring of 2018. It will be used to provide the waste heat from a foundry melting furnace from the metal industry as process or thermal heat.  more...
     
    News 31.08.2017

    New energy-efficient school building in the spotlight

    The new, energy-optimised building for the Willibald Gluck Secondary School in Neumarkt (Upper Palatinate, Germany) utilises solar energy and near-surface geothermal energy. The first year in regular operation has provided good values: the heat pumps are contributing their planned share to the heat generation and the photovoltaic systems cover 35 per cent of the electricity consumed for the building operation and use. Storing the PV electricity in a vanadium redox flow battery has not, however, increased the proportion of self-consumed electricity during the first year of operation. The operation of the ventilation systems also provides potential for optimisation.  more...
     

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Large-scale solar thermal systems in long-term testing