.
Search results: 110
Sort by:
Date


    Projektinfo 04/2014

    Swift construction of pipelines

    The laying of pipes, for example for heating networks, has previously been a labour intensive and time consuming occupation. With the newly developed “Pipe Express” method, a special tunnel boring machine drills through the ground at speeds of up to 1.2 metres per minute and conveys the soil directly to the surface instead of displacing it sideways. At the same time, the steel or concrete pipe is inserted into the horizontal borehole. In comparison with the open cut method, the process requires less than a fifth of the normal trench width and can also be used without lowering the groundwater level.  more...
     
    Projektinfo 03/2014

    Making machine tools work more efficiently

    When machine tools process complex components, often only about 20 % of the energy deployed flows into the actual metal cutting processes. The main loads tend to be peripheral machine components, such as cooling systems or hydraulic drives. In the Maxiem project, scientists from the Technische Universtät Darmstadt and industrial partners are showing how this energy requirement can, in ideal cases, be more than halved.  more...
     

    Energy from a thousand suns

    Multi-junction solar cells were originally developed as energy sources for space flight applications. Their output is high but their manufacture is complex. With their perfectly matched layers, the cells utilise a much wider spectrum of sunlight than silicon cells. For terrestrial use, the multi-junction solar cells are combined with concentrator systems. Like a magnifying glass, these focus a hundred- to thousand-fold concentrated beam of light onto the pinhead-sized solar cells. For this purpose, a solar tracker is used to enable the entire system to track the precise position of the sun. A new record solar cell has achieved an efficiency of more than 44 per cent.  more...
     

    CO2 capturing using lime

    CO2 can be separated from the flue gases from power plants. However, the processes developed for this have been very expansive until now. When capturing CO2 using quicklime, on the other hand, the costs are much lower – around 15 euros per tonne of CO2. These plants for capturing CO2 from exhaust gases can be retrofitted in existing power plants. The Technische Universität Darmstadt has demonstrated the process using a one-megawatt pilot plant. The solid material produced – quicklime – could be interesting for cement plants, since this would reduce their energy consumption.  more...
     
    Projektinfo 18/2013

    Storing wind energy underground

    Pumped storage power plants have been in use for over a hundred years to balance fluctuating electricity loads and to cover peak loads. The energy transition creates additional storage demand with its fluctuating feed-in of wind and solar power into the grid. New sites, however, are scarce. Whether the large differences in the tunnel heights of abandoned mines are usable or not is currently being investigated by an interdisciplinary team of researchers on the basis of two viable locations.  more...
     
    Projektinfo 17/2013

    Sustainable use of deep geothermal energy

    The alpine foreland is experiencing a geothermal energy boom. The region boasts a vast quantity of deep geothermal water. In the Greater Munich area alone, 15 geothermal heat stations and power plants are currently either in operation or under construction. Geoscientists led by the Leibniz Institute for Applied Geophysics (LIAG) have studied the geological and hydraulic conditions of the region and developed a simulation model. This model can now be used to better predict the interplay between power plants, long-term operation and exploration risks of new plans.  more...
     

    Energy performance analysis of complex existing buildings

    Together with academic and professional experts, scientists at Institut für Wohnen und Umwelt GmbH (IWU) Darmstadt have developed a method for the energy performance analysis of non-residential buildings. It has been implemented in software and tested in a field test. TEK-Tool helps energy consultants understand actual consumption, evaluate partial energy consumptions, identify weak spots and calculate potential savings. The approach as per DIN V 18599 has been simplified for the calculation process. This allows for a complex building to be assessed in terms of its energy performance within three working days.  more...
     

    Deciding well-informed when refurbishing windows

    Whether it is worth replacing a window can be determined using the Uwin software program. This assesses the energy-related properties of existing windows, including their degree of air-tightness and type of installation. The Uglass mobile measurement device has been developed in order to determine the glazing data precisely. It measures the thermal insulation value of insulating glazing in just a few minutes. This enables the expected savings in window and facade refurbishments to be easily and precisely determined. The software is already available on the market and the measurement device is still in the test phase.  more...
     
    Projektinfo 14/2013

    Science and business park grows efficiently

    If the current trend is extrapolated, the energy requirement of the Berlin-Adlershof science and business park will double by 2020 as a result of relocations and an increase in density. The implementation of a new energy concept is to help the site achieve 30 % savings in primary energy. Central to the concept is the energy-efficient improvement and cross-linking of buildings, systems and processes, the use of waste heat, efficient electricity and heat supply and the introduction of a technical and non-technical energy management system.  more...
     
    Projektinfo 13/2013

    Thermal heat from pit water

    The coal mining company RAG annually pumps over 100 million cubic metres of water to the surface from a depth of up to 1,000 m to secure the stability of the ground and the safety of drinking water in former mining regions. For one year now, the municipal utility of Bochum has been heating several public buildings with that pit water. The pilot project demonstrates how to use old mines for an eco-friendly heat supply of surrounding buildings.  more...
     

notepad

Events

29.08.2014 - 31.08.2014
Zürich

Bauen und Modernisieren
16.09.2014 - 17.09.2014
Neuss

VKU-Stadtwerkekongress 2014

Popular articles

Solar-active facade systems
Facade collectors with perspective
Lightweight construction material
Wood foam replaces artificial insulation material
Energy efficient cooling process for small applications
Zeolite/water refrigerators
Plasma method of foil production
Degreasing aluminium foil using corona treatment
Hot Spots at the Upper Rhine Rift Valley
Geothermal electricity generation in Landau