Sensible storages, which are currently used in district heating networks for seasonal storage of excess heat (e.g. from solar thermal or industrial waste heat), exhibit high space demand, investment costs and heat losses. Within this project, concepts for using innovative storage technologies, e.g. thermochemical storages (TCS) having high heat densities and enabling pressure- and lossless storage, were developed and analyzed on a technological, economic and ecological basis. Additionally, the regulatory framework has been evaluated.
Within the research project TFlex it was checked if the losses adherent to small district heating networks during low-load periods can be reduced. One possible solution is by deactivating the network and supplying the customers from previously charged decentralized storages. The optimal clustering of the storages and the possibility of solar-charging the storage were calculated with the aim of a guaranteed one-hundred percent heat supply.
EDEN - Developement of a structured data and preparation documentation with a minimized error-proneness for energy performance cerificates.
Current energy performance certificates hold major flaws. Therefore, the presented research initiative aimed at the development of a standardized and easy-to-use, generic Input-Data-Documentation, which ensures the quality of energy certificates for all involved stakeholders. During the development, the documentation had been conducted and for a chosen sample of representative buildings, which is expected to demonstrate the high potential of such a development.
Manage_GeoCity - Development of a method for the coordinated management of geothermal energy in urban areas
Based on the urban region Graz a method had been developed for the coordinated use and management of shallow geothermal energy for heating and cooling as well as seasonal heat storage in urban regions. Ground water flow, different geologic conditions, heating and cooling demand, heat input from solar collectors and industrial waste heat and the possibilities of seasonal heat storage in the subsurface were considered.
Low Tech - High Effect! An overview of sustainable low-tech buildings: realized best practice examples, innovative approaches, principles and systematic solutions
In this study approaches of low-tech buildings were examined and particularly innovative and representative concepts were documented in detail. The aim was to elaborate the current state of the art and the existing know how and knowledge on the basis of realized examples as well as to show potential for further development.
Documentation of available knowledge on the renovation of historical buildings ("Gründerzeitgebäude") as an input for the preparation of 5 demonstration projects as well as the development of an accompanying monitoring system within the scope of the project "Gründerzeit with future".
Evaluation of solar-thermal energy stores using a uniform and marketable system of characteristic numbers
Comparison of solar-thermal energy stores A clear and uniform system of characteristic numbers enables a cost-saving comparison of the efficiency of solar-thermal energy stores of different technologies for the first time and gives important impulses for the market.
City Dialog - Evaluation of future research topics for the "city of the future" through stakeholder dialog.
The integration of key stakeholder views allowed an extensive evaluation and prioritisation of research topics for the "city of the future". The discussion had been organised in workshops with stakeholder groups (public administration, science & research, residents).
The energy concept led Gugler in frame of the conversion and expansion of the company towards plus-energy standard. Significant measures ware a consequent maximum reduction of the energy demand, optimal utilisation of industrial waste-heat, maximum consumption of on-site energy sources, integrated energy production, ecologic load management with comprehensive response- and storage-techniques.
The energy demand calculated in the design phase often differs from measured values in the actual building operation. This projects reviews building automation and operation by presenting a solution how to assess energy efficiency of control strategies in the fields of air conditioning systems, concrete core activation and free cooling. The results are implemented in the demonstration building "Post am Rochus".
EnergyCityConcepts - Methods and concepts for the implementation of sustainable energy systems in cities
Two concrete model regions (small city Gleisdorf and urban city quarter Salzburg-Schallmoos) will be developed and tested using new methodical approaches (interdisciplinary urban and regional energy planning, modeling and simulation). Therefore, it is aimed to substantiate scenarios and concepts for the implementation of defined targets on technical, ecological and economic criteria.
ARIS - Application of non-linear control engineering and implementation of intelligent sensor systems for the improvements of energy efficiency in the building sector
The major goal of the project was the development of innovative control concepts for controlling and optimizing heating, cooling and ventilation systems (HVAC) as well as building loads. The implementation of advanced, energy efficient non-linear control techniques in building management systems is supported by new sensor technologies that are applied to building and energy systems in order to improve their energy-efficient operation.
In the frame of the project a classification system for Smart City Technologies had beed developed, the relevance of a wide range of technologies in terms of their potential contribution to the development of sustainable and more resilient cities with a high quality of life had beed evaluated and a comprehensive classification of the technical maturity of relevant technologies, technical (sub-)systems and technology-related services had been given.
The project aimed at comprehensively analyzing existing approaches for the coordination and regulation of Smart City development in small and medium-sized cities. In the context of case studies, this study combines the analysis of relevant legal-institutional frameworks as well as of governance processes for selected, energy-related fields of urban activity.
E_PROFIL is a set of methods (an IT-supported toolkit) for the elaboration of neighbourhood profiles. The aim of the project is to facilitate an energy and resource efficient development in the planning practice of Austrian cities. Furthermore, the project is an important asset for research and planning activities in Europe and can also be applied to other neighbourhoods.
BIM4BEMS explores use cases that represent the usage of building information models (BIM) in combination with building energy management systems (BEMS) during operation. This enables the interaction between BIM and building management systems (BMS) which improves the analysis and visualization of inefficiencies in facilities.
SURO - The urban underground as mine? Potential of secondary resources in subsurface infrastructure systems
Feasibility of a resource cadaster to inventorize, characterize and locate material stocks in subsurface infrastructure networks. The results are used for the economic assessment of secondary resource potentials.
P2H-Pot has identified economically feasible potentials for Power-to-Heat (P2H) in urban regions. The suitability of different technical system configurations were investigated using thermodynamic simulation and considering experiences from Scandinavian cases. The assessment of short, medium and long term relevance and economic feasibility of P2H were accomplished by simulating model-based scenarios up to 2050 of the Austrian and German electricity and heat market. In cooperation with a district heating company three case studies have been carried out.
PRoBateS - Potentials of planning and building legislation for energetically sustainable city structures
The aims of this project are to analyse planning and building legislation in order to identify barriers, potentials and suitable courses of action for energy-orientated policy measures. Specific policy recommendations are developed with a view to increasing the sustainability of energy-related city structures. For these purposes the project combines two different disciplinary approaches: a thorough legal analysis and a spatial structure and quantitative impact assessment.
The project works out the development of a smart grids reference architecture for Austria under involvement of all actors. Based on technological-scientific elements a process which meets the requirements of stakeholders like operators of infrastructure, industry and also public agencies will be worked out to achieve nationally accepted and internationally orientated reference architecture.