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    Air-conditioning buildings with salt hydrates

    In many office buildings, it is just as important to supply cooling in summer as heating in winter. Researchers have therefore developed salt hydrates that are suitable as storage material in chilled ceilings and centralised cold storage systems. The special advantage: Through a phase change, they store cooling energy with a high energy density and at the temperature level needed for air conditioning. This enables the required cooling to be provided very efficiently.  more...
     

    Predictable heat yield

    The demand for large-scale solar thermal systems in district heating networks is increasing. Thereby the need for more powerful calculation programs is also increasing. Investors require predictions of the expected heat yield of solar thermal systems for their projects. A new calculation program shall now make that possible.  more...
     

    "We have to increase our efforts!"

    The first ENERGIEWENDEBAUEN conference took place in Berlin from 30 - 31 January, 2017. Some 350 participants from research, academia, architecture and planning offices, politics, energy suppliers, cities and municipalities as well as the real estate industry discussed how the energy supply of buildings and districts could be made future-proof. The aim of the German federal government is to create a climate-neutral building stock by 2050. This will not be easy to achieve.  more...
     

    Fresh air without mechanical ventilation

    Ventilating non-residential buildings naturally but in a controlled manner saves primary energy and requires lower investment and operating costs than mechanical ventilation systems. Scientists from Stuttgart University have therefore developed a ventilation concept that ensures a good indoor environment and reduces the electricity consumption for operating the ventilation system.  more...
     
    Projektinfo 10/2016

    Fuel cell generates electricity and heat for homes

    Highly efficient, low-emission and quiet: as small-scale combined-heat-and-power stations, new fuel cell heating units produce heat energy and electrical energy with an efficiency of over 90 per cent. They have proven themselves in extensive tests in single and two-family homes, and their operation and design have been improved incrementally. The first units are now on the market. They run on natural gas, and on hydrogen and methane produced using renewable energy or biomass. Decentralised fuel cells can generate demand-oriented electricity, and they can be used in a grid-friendly or grid-independent way.  more...
     
    News 13.07.2016

    New lighting strategies for streets, footpaths and squares

    LED is the future of street lighting. The LED Walkway on the grounds of Berlin’s Technology Museum, which opened in March 2015, demonstrates potential applications. The lighting technology developed allows the lighting level and light conditions to be adapted to external factors such as weather conditions and traffic volume. Spaces can now be set to a defined brightness with minimum stray light. The “StEffi Street Lighting” research project, launched in May, aims to develop and evaluate concepts for space-specific lighting and increase the potential savings with LED technology.  more...
     

    Cooling with solar heat

    The cooling or air conditioning of buildings with solar heat has a particular appeal because the heat demand and supply are usually consistent with each another. Cold stores in southern climates and many process refrigeration systems also require considerable energy when the sun shines intensely. The use of solar cooling systems instead of electric chillers also eases the grid, particularly at peak load times.  more...
     

    Clean heating with wood

    Despite considerable advances in firing technology, harmful particulate matter is produced when wood is combusted. Electrostatic separators, however, filter up to 90 per cent of particulate emissions from biomass boilers. These therefore enable wood burners to use a wider range of fuel and still meet the tightened requirements of Germany‘s 1st Ordinance on the Implementation of the Federal Immission Control Act. The major advantage: Both new and old heating plants can benefit from the new system.  more...
     

    Storing heat until winter

    To be able to use summer heat for heating during the winter, hot water storage systems have to be very large. Small storage systems cool down too quickly. With this in mind, seasonal storage tanks have been developed almost exclusively for housing estates or very large consumers. Now researchers have created a new long-term storage system which is also suitable for single-family homes.  more...
     

    The building serves as a heat storage tank

    Buildings with high solar shares of fraction require large water tanks to store heat. Researchers have developed a space-saving alternative: excess heat is stored in the ceilings of the building via building element activation. Scientists are currently testing the concept in an experimental building near Hanover. They now have the results of the first year of operation.  more...
     

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Events

03.05.2017 - 05.05.2017
Berlin

Berliner Energietage 2017
10.05.2017 - 12.05.2017
Bad Staffelstein

27. Symposium Thermische Solarenergie
11.05.2017 - 12.05.2017
St. Gallen

Energie-Tage St.Gallen 2017

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