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All projects


IEA-EBC Annex 73: Towards Net Zero Energy Resilient Public Communities

Public building clusters like hospitals or university campuses often include critical infrastructure which have to be operational at every occasion. Consequently, these structures are in dire of robust and reliable energy supply which is additionally sustainable and cost-effective as far as possible. The IEA EBC Annex 73 aims at developing tools for the planning process of resilient, efficient and low carbon energy systems for such building clusters.


KooWo - Volkersdorf

Kooperatives Wohnen Volkersdorf – Suffizienz, Flächen sparen und Energieeffizienz im Areal

Am Beispiel des gemeinschaftlich geplanten Wohnprojekts „KooWo“ in Volkersdorf soll Suffizienz umgesetzt und das übergeordnete Ziel einer ganzheitlichen Energie- und CO2-Reduktion erreicht werden.

DeStoSimKaFe - Concept development & coupled deterministic/stochastic evaluation of cold district heating for heating & cooling supply

The main objective of the project is to increase the applicability and feasibility of an innovative and sustainable heat and cold supply based on cold district heating. In order to achieve this, the development of complex technical system solutions and methodical fundamentals for the simulation, conception, planning and long-term evaluation of such systems takes place. Furthermore, a stochastic model for the long-term evaluation of system solutions based on varying framework conditions and exogenous scenarios is being developed. Based on the developed system solutions and the technical/ecological evaluation, tailor-made products and services for cold district heating are developed, which are then incorporated into an economic evaluation method.


6D BIM-Terminal: Missing link for the planning of CO2-neutral buildings

The goal of the project is to achieve a continuous life cycle analysis in all planning stages of buildings, with a special focus on the planning and construction of CO2-neutral buildings, by the application of building information modelling (BIM).


IEA EBC Annex 75 - Cost-effective Building Renovation at District Level Combining Energy Efficiency & Renewables

The cost efficient renovation of existing districts requires the right balance between energy efficiency measures and renewable energy measures. How this right balance can look like, will be investigated in this project.


Kostenreduktion Plusenergiegebäude – KoProLZK+

The aim of the project is to develop a continuous process chain for the energetic-economic optimization of zero and plus energy buildings. The project will focus on proven and new approaches to cost reduction of nearly zero energy buildings (nZEBs) at all stages of the life cycle. The main goal is to identify the extra-costs for nZEBs, and to promote innovative approaches taking into account the cost-effectiveness for all the Stakeholders. A database containing important cost parameters and potential savings will be developed.



Ammonia-to-Power“ - Energy Recovery from ammonium-containing Substances by means of Vacuum-Membrane Distillation and Ammonia-Fuel Cell

A considerable high amount of ammonium (in the form of Nitrogen salts) is available in various waste product streams such as industrial wastewater, municipal sewage or digestate. Due to lack of efficient resource recovery technologies, the ammonium bound hydrogen in waste products cannot be utilized. Both these problems - the efficient recovery of ammonia gas and the utilization and energy recovery of ammonia in a fuel cell - require the development of new appropriate technologies. Within the project "Ammonia-to-power" a vacuum membrane distillation method (MD) for ammonia gas extraction and an ammonia fuel cell (SOFC ammonia) are developed.

The outcome of the project will be an optimized membrane distillation plant at laboratory scale with a characterized vacuum membrane module and appropriate process parameters, as well as a 5kW SOFC CHP system exclusively operating with ammonia. Furthermore a technical concept for a real-scale plant will be elaborated.



Numerical model for detailed calculation of solar radiation through transparent surface areas of the building envelope

In the light of global warming and regarding the fact that in the EU buildings account for about half of the total energy consumption the significance of highly accurate energetic models for buildings is rising constantly. Predictive and physically valid models are crucial in order to further increase the energy efficiency of buildings.


sBSc – scaled BIG SOLAR control

Development of optimized control strategies for large-scale solar thermal plants with absorption heat pumps and seasonal pit storage

The goal of the project “sBSc – scaled BIG SOLAR control” is the development of optimized control strategies and related software for a cost-efficient operation of large-scale solar thermal plant with an absorption heat pump and seasonal pit storage for urban district heating support.


CRAVEzero - Cost Reduction and market Acceleration for Viable nearly zero-Energy buildings

Effective processes, robust solutions, new business models and reliable life cycle costs, supporting user engagement and investors’ confidence towards net zero balance.

Cost optimal and nearly zero energy performance levels are principles initiated by the European Union’s (EU) Energy Performance of Buildings Directive, which was recast in 2010. These will be major drivers in the construction sector in the next few years, because all new buildings in the EU from 2021 onwards are expected to be nearly zero energy buildings (nZEB).

While nZEB realized so far have clearly shown that the nearly-zero energy target can be achieved using existing technologies and practices, most experts agree that a broad-scale shift towards nearly-zero energy buildings requires significant adjustments to prevailing building market structures. Cost-effective integration of efficient solution sets and renewable energy systems in a form that fits with the development, manufacturing and construction industry

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