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    Projektinfo 11/2018

    Passive House primary school in Halle undergoes monitoring

    The ecclesiastical funding body wanted to use ecological building materials for the construction of a new primary school and, with the energy-optimised building, ensure a high degree of learning comfort with manageable operating costs. This resulted in the first Passive House school building to be constructed using a timber frame structure in Saxony- Anhalt. Multi-year monitoring and accompanying sociological research have verified both its energy efficiency and acceptance.  more...
     
    Projektinfo 10/2018

    Cost-saving erection of large heat storage tanks

    Scientists are testing a large overground hot water storage tank with lower production costs than comparable constructions thanks to its construction with prefabricated steel segments. The OBSERW research project is building on the experience gained from a large cool water storage tank that has been tried and tested in the district cooling network of the city of Chemnitz for more than ten years. For the first time, the construction principle, which is flexible in shape and size, could be transferred to hot water storage tanks that have to withstand high temperatures and temperature changes.  more...
     
    Projektinfo 09/2018

    Refurbished vocational college achieves energy-plus level

    Since its refurbishment, the vocational college in Detmold generates more primary energy than it consumes. For this purpose, the facades and the top storeys have been insulated with cellulose, passive house windows have been installed and the roof areas have been covered with PV panels. The existing heating system continues to be used with reduced temperatures. Since 2016, there has been a comprehensive monitoring of its operation.  more...
     
    Projektinfo 08/2018

    Testing low-noise rotor blades in the wind tunnel

    The expected noise emissions and the resulting necessary distance to residential buildings are of great importance in the approval of wind farms. In order to reduce these emissions, scientists have designed a powerful rotor blade profile that is as low-noise as it is aerodynamically efficient and have tested the corresponding specimens in wind tunnels. These specimens were combined with passive reduction technologies on the trailing edge and modified blade tips. During the experiment, subject to the operating conditions, noise reductions of up to eight decibels were achieved.  more...
     

    Adjusting operation of biogas plants to power requirements

    Compensating supply fluctuations will prove vital in future power grids utilising high proportions of wind and solar energy. The demand driven generation of electricity from biogas can make a viable contribution in this regard. Researchers are developing new systems and software for biogas plants, integral in facilitating such flexible operational characteristics. This involves the precision monitoring and regulation of biogas production and conversion into electricity.  more...
     
    Projektinfo 06/2018

    Which heat sources are optimal for heat pumps?

    The number of buildings heated by heat pumps continues to rise. In recent years, air-water heat pumps have been the dominant force in this regard. More energy efficient alternatives exist, however, to outside air as a heat source. Examples include geothermal energy, ground water, exhaust air and solar thermal energy. The variety of potential heat sources and of heat exchangers tapping these presents an incredible challenge for planners. Validated concepts, objective decisionmaking guidance and analyses are consequently called for. This endeavour is supported by two research groups.  more...
     
    Projektinfo 05/2018

    Mainz Energy Park

    Companies and scientists are investigating the storage of fluctuating wind energy in the form of hydrogen on a research plant located in the Mainz-Hechtsheim commercial zone. All key components from generation and storage to utilisation at an industrial scale are being looked at and interlinked with innovative technology components. The PtG plant (Power-to-Gas) at megawatt scale facilitates not only the chemical long-term storage of energy. It furthermore interconnects the electricity, heat and mobility sectors.  more...
     
    Projektinfo 04/2018

    Double heats better

    Air-to-water heat pumps are providing increasingly more heat for new or refurbished single-family homes with low energy requirements. Compared with ground source heat pumps, they have significantly lower acquisition costs and can be easily integrated into low-temperature heating circuits. Scientists from research and industry want to increase the efficiency of the systems by, on the one hand, using a second heat source for the heat pump and, on the other hand, by reducing the heat demand by means of centrally controlled individual room and supply control systems.  more...
     
    Projektinfo 03/2018

    Energy efficient model factory

    A multi-functional, multi-networked factory in every respect: The ETA Factory on the campus of the Technische Universität Darmstadt is a research project, large-scale demonstrator and place of learning. It networks the building envelope and industrial process chain across technologies and disciplines in individual and integrated solutions, thus increasing the energy efficiencyof the overall system.  more...
     
    Projektinfo 02/2018

    District heating network becomes heat hub

    The Brandenburg town of Hennigsdorf wants to increase the climate-neutral share of heat in its district heating network to 80 per cent within five years. To achieve this, the municipal utility company is planning to integrate the waste heat from the local steelworks and large solar thermal collectors into the network. A multifunctional, large-capacity heat storage system is intended to provide the necessary flexibility. The concept is ready and the implementation has already started in 2017. Hennigsdorf is therefore acting as a real-life laboratory for ensuring the renewable future of the heating provision.  more...
     

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