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    Projektinfo 06/2015

    Stable grid with 100 per cent green electricity

    In a power grid, the energy provided must always be equal to the power demanded. Only then can frequency and voltage remain stable. Ensuring this is the task of grid operators. But when volatile — meaning not arbitrarily adjustable — energy sources are the main sources of electrical energy, grid operators face a challenge.  more...
     

    Solar houses scientifically evaluated

    With more than 1,700 buildings realised, solar active houses are no longer a marginal phenomenon. However, what has been lacking until now is a scientific evaluation of this heat supply concept. For this reason, researchers have measured nine solar houses over several heating seasons. Project manager Gerhard Stryi-Hipp has now presented the interim results at the OTTI Symposium on “Thermal Solar Energy”.  more...
     

    Steel beats copper

    The so-called embossing stretch forming process is an established method used in the manufacture of radiators. Researchers have now adapted this process for the production of solar absorbers. Instead of using expensive copper, this method also enables steel and aluminium to be processed in large numbers and with flexible lengths. An adapted channel design compensates for the lower thermal conductivity of steel. This enables them to achieve the same thermal efficiency as conventional absorbers – and also save money.  more...
     

    Standardised feed in of solar heat

    Solar thermal systems are very suitable for retrofitting into existing buildings. However, a lack of standardisation exists when coupling the system to a district heating network. Viessmann and the Technical University of Dresden are therefore developing suggestions for future standardisation. This should help to reduce the planning effort required and save costs through unification of the various circuit variants.  more...
     

    Energy research on course to delivering the energy transition

    The German federal government recently published the National Action Plan on Energy Efficiency. The concept is specifically aimed at winning over all actors in society in achieving greater energy efficiency. A few days later, the German Federal Ministry for Economic Affairs and Energy announced its research funding for the German federal government’s 6th Energy Research Programme. In the BINE interview, Dr Rodoula Tryfonidou from the responsible department in the German Federal Ministry for Economic Affairs and Energy talks about the contribution made by energy research in bringing about the Energiewende – Germany’s energy transition.  more...
     
    News 11.11.2014

    Low-cost collector integration in buildings

    To promote the spread of solar thermal energy further, the cost of system components must come down. Under the stewardship of the Fraunhofer Institute for Solar Energy Systems ISE, scientists have developed collectors with absorbers and coverings produced from low-cost plastic. Over 30 terraced houses in the Mortensrud neighbourhood near Oslo in Norway have been fitted with the new technology and showcased recently to the public.  more...
     

    Vacuum tank stores heat

    An efficient long-term heat storage tank boosts the shares of fraction of solar thermal energy systems in buildings. Staff at Bavarian Center for Applied Energy Research and at steel and metal engineering company Hummelsberger have developed a storage system that minimises thermal losses and optimises temperature stratification. A vacuum between the inner and outer tank combined with a perlite powder filling reduces the thermal conductivity of the storage tank shell.  more...
     

    Making district heating renewable

    Three research teams have investigated how the proportion of renewable energies can be increased in district heating networks. Custom strategies were developed in this respect for the model regions Jena and Ulm. The key lay in identifying the appropriate renewable energy sources and in understanding the potential these exhibit and the effect their inclusion would have on the efficiency of the networks. The project also comprises a survey of existing heat networks with best practice analyses.  more...
     
    News 18.09.2014

    Molten salt transfers heat

    At the PE1 power plant in southern Spain, a demonstration plant has gone into operation that uses inorganic molten salt as the heat carrier. The advantage: Salt is inexpensive and can also be used as a heat storage medium. In addition, operating temperatures above 500 degrees Celsius can be achieved, which increases the efficiency by ten per cent.  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...
     

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Events

07.09.2015 - 10.09.2015
Berlin

Solar(fach)berater Solarthermie
10.09.2015
Lausanne, Schweiz

Netzdienliche Gebäude 2015

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