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    News 05.04.2018

    Storing power and heat in the district

    Sustainable energy provision is to be developed for the urban district of Rüsdorfer Kamp in Heide. The QUARREE100 research project is investigating how the district could be fully supplied with local or regional renewable energy sources. One goal is to integrate the regionally generated wind power into the regional energy system in an economically efficient and system-serving way.  more...
     

    Storing heat in mines

    What happens to mines that are no longer in use? Could they be used to store heat? Researchers are hoping to find this out and are conducting tests in the former Prosper-Haniel hard-coal mine in Bottrop to investigate whether it is suitable for underground heat storage. The GeoMTES research project is developing storage concepts for this purpose and a feasibility study will be carried out by September 2018. The modelling of the pit structure has now been completed.  more...
     
    News 21.03.2018

    Effect of wind farms on flight safety

    The approval of new wind turbines in the vicinity of radar or navigation systems in air traffic often causes conflicts, which sometimes end in court. It is undisputed that wind turbines can influence the signals emitted by radar systems and omnidirectional radio range beacons. So far, there has been a lack of scientifically valid, reproducible investigations on the actual extent. Together with their partners, the Physikalisch-Technische Bundesanstalt has developed a new measurement method and numerical simulation methods and has now published first results.  more...
     

    The wind optimises the rotor blade

    With increasing blade lengths, the aerodynamic vibration loads on rotor blades also increase. Conventional construction and control concepts are also increasingly reaching their limits. One possible solution is rotor blades with bending-torsion coupling. In strong winds, they not only bend but also twist axially. Such a demonstrator rotor blade is currently on the test stand. Once the measurements are completed, identical units will be installed on three research wind turbines.  more...
     
    News 15.02.2018

    Testing new foundations for offshore wind turbines

    Until now, most support structures for offshore wind turbines rest on piles that have been driven deep into the sand. This construction method causes noise and high technical complexity. An alternative to this are suction buckets. These are steel cylinders open at the bottom and closed at the top, which externally resemble inverted buckets and are sucked into the ground by artificial negative pressure inside. Large-scale tests are currently underway at Testzentrum Tragstrukturen in Hanover in order to optimise the installation of the bodies and investigate possible compressive and tensile loads.  more...
     

    Solar cell uses front and back

    So-called bifacial solar cells can convert incident light into electrical current both on their fronts and backs. They are up to 30 per cent more powerful than conventional monofacial cells that use only their fronts. The hitherto very complicated production of such double-sided solar cells has now been made simpler and less expensive by means of a newly developed doping process.  more...
     

    Modern living in an historic urban district

    The Margaretenau residential district in Regensburg is being modernised to improve its energy efficiency. The designers are developing a solar-active and -adaptive exterior render system as a replacement for conventional thermal insulation for the facades. This should increase the solar yields and improve the thermal comfort inside the buildings. The energy supply will be provided by a new and efficient hybrid heating system consisting of cogeneration and heat pump technology.  more...
     

    Virtual further development of system technology

    A current challenge for the wind industry is to counter the economic pressures from the electricity market with innovative concepts. However, the route that needs to be taken until new turbines and components reach market maturity is long. In order to save time and expensive phases on the test rig, many investigations can be simulated in advance on the computer. The new WindMUSE simulation environment is multidisciplinary, integrates existing submodels using a common language and enables real-time testing. The aim is to depict wind turbines with a precision comparable to that customary in the aviation industry.  more...
     

    Sphere storage system receives German Renewables Award

    One year ago, scientists sank a concrete sphere one hundred metres below the surface of Lake Constance. The three-metre-diameter hollow body provided a functional model for an offshore pumped storage power plant. Now they have received the “German Renewables Award 2017” for their research work. The developers at Fraunhofer IWES are already planning the next step.  more...
     

    Better insulation ensures more reliable operation

    If the receiver insulation is damaged, the efficiency of solar tower power plants decreases. Repairing or replacing the insulation takes time and money. In conjunction with industrial partners, scientists at the German Aerospace Center (DLR) have developed cavity insulation that utilises new material combinations. Tests show that the market-ready insulation is more robust than previous models.  more...
     

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Events

30.05.2018 - 31.05.2018
Osabrück

11. Biogas-Innovationskongress
13.06.2018 - 15.06.2018
Bad Staffelstein

Symposium Thermische Solarenergie

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