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    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 17.05.2018

    Reactive power management in practice

    The energy transition presents new challenges for grid operators. One aspect of this is the provision of reactive power. Reactive power flows in grids affect voltage and grid stability. Currently, this is primarily compensated for by conventional power stations. With the decommissioning of large nuclear power plants, the power system needs new solutions.  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...
     

    Smart Grid at favourable cost

    The same technology for decades keeping street lights illuminated has the potential to motivate power consumers and decentralised generators to adopt system-friendly behaviours. The Fraunhofer Institute for Solar Energy Systems (ISE) has investigated how dynamic power tariffs can be transmitted based on ripple control technology together with project partners. Investigations involved sending electricity market prices across the regional power grid using tariff switching times.  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...
     

    Multidisciplinary energy efficient production

    The closing event of the “ETA Factory” research project took place at TU Darmstadt on 11 April 2018. In the course of the project, a multidisciplinary research group was able to demonstrate the feasibility of energy savings of up to 40 percent in industrial production. The jointly planned research factory saw researchers optimise and network energy flows in production and within the building.  more...
     

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