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    “Rethinking collectors from a construction industry perspective”

    The trend towards zero-energy and energy-plus buildings has also increased the importance of using roofs and facades for the generation of renewable energy. The TABSOLAR research project has resulted in the development of new thermo-active building systems that are suitable for industrial prefabrication and can be used in a wide range of applications.  more...

    “We have to consider renewables as an association”

    New or existing buildings: covering heat demand with renewable energy has become a trend. Generally speaking, solar thermal systems are the ideal choice for hot water supply and heating support. But things have not been easy on the industry. In the BINE interview, Bernhard Weyres-Borchert, president of the Deutschen Gesellschaft für Sonnenenergie (DGS), speaks about chances and constraints of this sophisticated technology.  more...

    Germany’s largest nacelle test rig inaugurated

    Germany’s largest test rig for wind turbine nacelles is now in Bremerhaven. Here, drive trains with up to eight megawatts can be tested. A load transmission system mechanically simulates the wind loads occurring in the field. The Fraunhofer Institute for Wind Energy and Energy System Technology IWES recently commissioned the nacelle test rig.  more...
    Projektinfo 13/2015

    Electric impulses fragment hard rock

    Until now, roller bits have been used for drilling in deep-lying rock. These only advance slowly through crystalline formations and wear out quickly. That makes drilling measures more expensive and is particularly an economic problem for deep geothermal projects. Researchers in Dresden (Germany) are therefore developing an alternative drilling method for hard rock where a high-voltage impulse fragments the rock. Up to 30 % lower drilling costs are possible.  more...

    Greater efficiency: Generating steam in receivers

    On the Plataforma Solar de Almería in southern Spain, scientists from the German Aerospace Center (DLR) have developed a new way of generating solar steam. In the installation, the steam used for producing electricity is generated directly in the receiver tubes in the parabolic troughs. This therefore eliminates intermediate steps using heat transfer media and also enables higher operating temperatures of up to 550 degrees Celsius. This should therefore enable parabolic trough power plants to produce electricity more efficiently and cheaply.  more...

    World record for both sides-contacted silicon solar cells

    With a new process for backside contacting, researchers at the Fraunhofer Institute for Solar Energy Systems ISE have set a new record for both sides-contacted silicon solar cells. The scientists achieved an efficiency of 25.1 per cent with an ultra-thin, tunnel oxide back contact. This is applied over the entire surface and does not require complicated processing steps for texturing the cell’s rear side.  more...

    Rotor blade, nacelle and foundation put to the test

    Whether on land or in the sea, wind turbines are getting bigger and the towers higher. All components undergo various preliminary tests, in order to ensure that they can withstand the strains that wind and weather place on them. In recent years, large test facilities have become available in Germany, in which complete rotor blades, nacelles, and foundations are tested. On 21 October 2015, centres will present their supply ranges at a workshop for experts.  more...
    Projektinfo 08/2015

    Processing solar cells with lasers

    Laser technology enables solar cells to be produced with greater efficiency. It replaces or eliminates costly processing steps that were previously required. Researchers have developed a method for laser contacting the rear side of solar cells that can be integrated into existing production lines for screen printing solar cells. The new technique enables the cells to be produced at a lower cost, reduces the energy and materials deployed, and eliminates previously required environmentally harmful chemicals.  more...

    Safely navigating jets close to wind farms

    Until now, it has been difficult or even impossible to construct wind turbines near radio range beacons or radar systems used for navigating air traffic. These systems block what would otherwise be suitable locations. The extent to which rotors deflect or change signals has, however, not yet been studied in any scientific detail. Two research teams in Braunschweig are therefore working in separate projects on these basic data.  more...
    News 29.07.2015

    Energy thanks to lunar power

    Researchers are developing a new approach for generating energy from tidal currents. Here they are combining a semi-submerged platform with several small-sized instream turbines. This means that the tidal power plant requires less maintenance than is usually required. However, in order to achieve the highest possible energy yields it requires strong water currents. Canada’s Bay of Fundy has an exceptionally high tidal range exceeding 15 metres. This is where it is planned to build the hydropower plant so that it can provide the first electricity in 2017.  more...



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