.
Search results: 161
Sort by:
Date | Contenttype


    Producing rotor blades more quickly

    Scientists at the University of Bremen have developed a new automated process for the production of rotor blades together with partners from industry. A textile product is first cut to size mechanically, stacked, shaped in accordance with the subsequent blade design and then placed in the negative mould. This is followed by the injection of the resin. The process is intended to shorten production time and improve quality.  more...
     

    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...
     

    Stabilising the grid with wind power

    In future it is intended that photovoltaic systems and wind farms contribute more to the stability of the electricity grid. They could then replace some of the fossil fuel capacities that until now have had to be used for the sole purpose of balancing out frequency variations. In a study, methods have been developed that can be used for intermittent renewable energies when bidding to supply control reserve as part of regular tendering periods.  more...
     
    News 17.07.2014

    Database shows output from renewables

    The sources of renewable energy –sun, wind, water and biomass – account for a large share of the electricity production in Germany. At the beginning of July 2014, solar energy covered the entire peak load. This is shown in the new online “Energy Charts” database at the Fraunhofer Institute for Solar Energy Systems ISE.  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...
     

    “Wind energy has excellent prospects inland”

    One of the highest wind measurement masts in Europe has been standing on top of a wooded hill near Kassel since 2011. The mast is being used to investigate the wind layers between 100 and 200 metres in height and the influence of forest cover and terrain inclinations on the wind profile and generation of turbulence. The measured values, which are obtained using conventional sensors on the mast, are also used to validate and further develop laser-based LiDAR methods. In the interview, Paul Kühn, Group Manager for Onshore Site Assessment at the Fraunhofer Institute for Wind Energy and Energy System Technology IWES, talks about the project’s initial results and future prospects.  more...
     

    Accelerated ageing of collectors

    In the desert, in the Alps and along the coast: at these locations, solar collectors are exposed to a combination of high UV radiation along with salty and humid air. That stresses the components in solar thermal systems and makes them age faster. Until now, however, this has not been adequately investigated. For this reason, Fraunhofer ISE is now developing tests to accelerate the ageing of collectors in different climate conditions. The preliminary findings are being provided by the SpeedColl project.  more...
     

    “Secure provision of data centres with renewable energies”

    The RenewIT project is researching how data centres can make greater use of renewable energies. That is an important goal for project partner Thorsten Urbaneck, who is a private lecturer at Chemnitz University of Technology. This is because it is estimated that data centres consume two per cent of the electricity used in Europe – and the trend is increasing.  more...
     

    Storing summer heat until winter

    In the SolSpaces project, researchers from the Institute for Thermodynamics and Thermal Engineering at the University of Stuttgart are developing a new heating concept for compact residential buildings. This includes a collector system with a thermochemical storage system that can store the solar thermal energy from summer until winter. The scientific monitoring has begun.  more...
     
    News 01.04.2014

    Less expensive production of thin-film modules

    In the CIGSfab project, the developers have managed to both improve the production of thin-film modules and make them less expensive. In its innovative production line, the Manz AG engineering company has reduced its manufacturing costs by ten per cent. In addition, the company has also made greater use of laser technology and has thus increased the efficiency of the modules by 0.5 per cent. The new production plant therefore makes thin-film photovoltaics a serious competitor for multicrystalline silicon modules.  more...
     

notepad

Popular articles

Innovative drainage and energy concept
Energy from waste water supplies urban district
Control reserve supplied by renewables
Stabilising the grid with wind power
Solar-active facade systems
Facade collectors with perspective
Intergration of regenerative power generators
Compressed air energy storage power plants