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    Superconducting generator on the test stand

    Compact design, low tower head mass and good transportability: The high-temperature superconducting generator, which was developed in the EcoSwing research project, is to be used in the next generation of multi-megawatt turbines. The practical feasibility of the concept is being verified in a test campaign on Fraunhofer IWES’ nacelle test rig and in a follow-up field test in a two-blade system in Denmark.  more...
     

    Developing multifunctional façade elements

    As the outermost layer of the building envelope, the façade performs numerous functions. They are to be intelligently combined to create a system that permits the application of cost-effective, multifunctional façade systems. To do this, scientists are developing a façade element with integrated organic photovoltaics, textile sun protection, a sustainable insulating material and the sensors necessary for control. The next step is to test the elements on the south façade of a multi-storey residential building.  more...
     
    News 05.06.2018

    Testing climate-neutral districts in the real-world laboratory

    How can energy efficiency measures and the utilisation of renewable energy sources enable districts to get by with virtually no fossil fuel? How can smart networking of power, heat and mobility be achieved? Scientists and other stakeholders are investigating these questions in six flagship projects. Initial results and local challenges were outlined by the research teams in a panel discussion at the Berliner Energietage conference.  more...
     

    Smart Green Tower becomes an energy producer

    The Smart Green Tower is being built in the city of Freiburg. The 51-metre-high building will provide living, residential and working space. Depending on the solar radiation, a building envelope made of photovoltaic modules generates more energy via the photovoltaic system than can be consumed directly. In order to utilise the surplus electricity, the designers are using a flexible internal energy storage system with lithium-ion batteries.  more...
     

    Adapting chlorine production to the electricity supply

    The chemical industry is the second largest consumer of electricity within German industry. Using the example of energy-intensive chlorine-alkali electrolysis, scientists are now investigating to what extent this process can contribute to managing loads in the power grid. To achieve this the production needs to be adapted to the intermittent electricity supply.  more...
     

    Solar Decathlon competitions compact

    The Solar Decathlon student competition challenges the participating teams to develop completely solar-powered houses. More than 250 buildings have already been built in the 13 competitions that have taken place to date. A considerable amount of investigative spirit has gone into designing all of them, they are comparable and well documented. A freely accessible online database now provides a comprehensive overview and the framework for systematically evaluating the innovations and results.  more...
     
    News 15.05.2018

    Solar thermal energy reduces surface area of geothermal heat collectors

    For heat pumps with geothermal heat collectors, unglazed solar collectors offer several advantages as a secondary heat source. The surface area requirement for laying geothermal heat collectors is reduced by up to 50 percent without resulting in depletion of the ground or critical freezing conditions. Researchers at the Institute for Solar Energy Research (ISFH) in Emmerthal closely investigated this together with partners in a research project. The simulation model developed is available for simulation software TRNSYS, information materials for simplified designing rules for planners will be published shortly.  more...
     

    Heat storage system with segmental design demonstrates its qualities

    In the “OBSERW” research project researchers have developed an innovative above-ground storage tank built using a cost-saving segmental construction method. This required a complete overhaul of conventional storage constructions and building technology. Numerous technical issues were put to rest, such as the temperature-resistant sealing of segments.  more...
     

    Adhesion rather than soldering of electrical contacts

    To connect individual high-efficiency solar cells, it is now possible to adhere rather than solder these on an industrial scale. The technology is market-ready. The method is the result of joint research conducted between the Fraunhofer Institute for Solar Energy Systems (ISE) and system manufacturer teamtechnik. Innovative solar cells with temperature-sensitive layers can thus now be gently connected. Even with narrow cell thicknesses below 160 micrometers, the lower thermo-mechanical stress demonstrates crucial benefits.  more...
     
    News 26.04.2018

    New administrative facility with energy-plus concept

    In 2013, the City of Freiburg held a competition for the construction of a new central administrative facility, including town hall, to consolidate its various agencies spread across the municipal area. The objective being two-fold: to produce an outstanding architectural design and to maximise energy efficiency. Monitoring measures put into effect upon commissioning are intended to reveal whether operation of the new energy-plus building fulfils the promise evident at the planning stage.  more...
     

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