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    It's turbulent offshore

    In offshore wind farms, the front turbines receive the most wind. They cause kilometre-long vortexes with slower wind and increased turbulence, which affects the downstream wind turbines. Previous methods that mimic such wakes are inaccurate or require considerable computation. In order to better understand these wake effects, scientists have therefore developed a new model and software to help optimise farms.  more...
     

    Solar thermal and photovoltaic power plants in comparison

    How will the market for photovoltaic and solar thermal power plants develop in the coming decades? Which technology is economically more efficient? And what opportunities are offered by combined power plant systems in sunny regions? A study carried out by the German Aerospace Centre (DLR) has investigated the development of these power plants until 2030.  more...
     
    News 26.10.2016

    Learning and working in an energy-plus school

    Uhland School in Stuttgart, which dates back to the 1950s, no longer accorded with today's structural and energetic standards. The renovation work is now almost complete and the City of Stuttgart is getting its first energy-plus school. A photovoltaic system on the roof and façade of the building covers the electricity requirement.  more...
     

    Measuring wind potential in low mountain ranges

    One of the highest meteorological masts in Europe is situated on Rödeser Berg, a hill near Kassel. The research facility with its measurement devices records the wind conditions up to a height of 200 metres. The aim is to measure the impact of forest areas and low mountain ranges on the wind profile and flow characteristics. The results will help to improve the meteorological models for assessing sites, will make it possible to estimate the loads on individual system components in more detail and will help to further develop the laser-based LiDAR method.  more...
     

    Video inspection tool brings light into the darkness

    Scientists in Karlsruhe are developing a camera inspection system for deep geothermal drilling holes. The device must be able to withstand strong pressure and high temperatures. This presents a particular challenge for the electronic components. A first draft design for the system has now been completed.  more...
     
    News 17.08.2016

    Rotor blades with elastic front edges

    During the course of their operation, countless raindrops land on the leading edge of the rotor blades used on wind turbines. Despite the special coatings and films applied to these edges, this damages the surface. Over time, this causes erosion to the leading edge of the blades. A research project is therefore testing a new approach: in future, elastic leading blade edges could solve the problem.  more...
     
    Projektinfo 09/2016

    Assessing solar houses in energy and economic terms

    With the German Energy Savings Ordinance 2016, the maximum value allowed for the annual primary energy requirement for new residential buildings has been reduced by a quarter. This is not a problem in solar houses: they require a maximum of 15 kWh/(m2p.a.) of primary energy for heating energy and auxiliary power and are therefore well below the requirements of passive houses. The cost of this good CO2 balance can be determined using a newly developed simulation method.  more...
     
    News 18.07.2016

    First liquid salt storage facility with one tank

    High-temperature heat storage tanks ensure that power plants work more flexibly and industrial process heat can be temporarily stored. Researchers at the German Aerospace Center (DLR) have therefore developed a heat storage tank for temperatures up to 560 degrees Celsius, which stores the heat in molten salt. Construction work on the testing facility began at the start of July 2016.  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...
     
    News 22.06.2016

    Collectors putting the heat on the automotive industry

    Solar thermal energy has great potential up to 250 degrees Celsius. Apart from space heating and domestic hot water, only a fraction of it is used for other purposes. Therefore, researchers aim to make solar process heat usable in the automotive industry. A joint German-Austrian project has now been launched.  more...
     

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Popular articles

Temperature firmness of overhead lines
The hotline in the grid
Application of renewable heating and cooling systems
Using geothermal energy in office buildings
Long-term measurements on a 200-metre-high met mast near Kassel
Measuring wind potential in low mountain ranges
Efficiency study on solar power generation
Solar thermal and photovoltaic power plants in comparison