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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.
M-DAB2: Material intensity of inner development - resource assessment and localization of urban development potentials
For the first time, the material intensity of inner development (in terms of material quantities) for different design variants is to be considered in the evaluation of inner development potentials. A set of methods for the holistic evaluation of potential areas and different development variants and scenarios for resource-saving inner development will be created.
MARGRET - Measurement of greened/non-greened objects for the adaptation of calculation models
Development of measurement methods to determine the influence of greening measures on greened versus non-greened reference objects with contemporary building standards under uniform framework conditions. Proposals for adaptations of calculation models or standards to e.g. enable an integration in the energy performance certificate.
MISSION KS 30 - Mission Klagenfurt climate-neutral and smart until 2030
Updating the Smart City Strategy (SCS) of Klagenfurt to achieve climate neutrality by 2030 and adapting the indicators to the Sustainable Development Goals (SDGs) of the UN. Fulfilling the participation requirements for the urban mission of Horizon Europe "100 Climate-neutral Cities by 2030".
MOTIVE – Modeling, Optimizing, and technical integration of Vacuum-Glazing-Elements
This project addressed the development of construction details for the implementation of vacuum glazing panels in new windows. In this project such constructions (form of frame, thermal bridges, structural aspects, mounting of glass) were explored via empirical experiments and via simulation. As an outcome, a mock-up was constructed, and the findings were documented in a comprehensive document.
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.
Model Predictive Control of Thermally Active Building Systems and Monitoring of two Test-Boxes
A robust, predictive controller which utilises weather forecast data to control thermally active building systems had been designed, researched and assessed in terms of energy efficiency and comfort compared to standard controllers, especially for cooling purposes. Simulations and real measurements using two "Test-Boxes" with thermally active building systems which are constructed and built for this purpose were used to analyse energy efficiency and comfort. Low complexity and transparency of methods and solutions should allow for transferability of all results to guarantee maximum usability for similar applications.
Monitoring of multi-family houses “Tonpfeifengasse”
Evaluation of activated building parts as heat storage for renewable energy shown on the example of the multi-family houses "Tonpfeifengasse".
Morphology of a City - The Austrian Built Environment
This study uses several data sources to analyze the effects of the research programe "Haus der Zukunft" ("Building of Tomorrow") on the Austrian housebuilding industry and the built environment.
MuT - Monitoring of urban Technologies: Classification, Specification, Evaluation
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.
Multi-WP – High-efficiency multivalent heat pump concepts for the thermal use of external air with geothermal storage
Optimization of multi-WP systems consisting of air-source heat pumps and geothermal storage with regard to increasing flexibility and efficiency from 30 kW for individual buildings as well as neighbourhood solutions and addressing aspects such as PV utilization optimization, mode of operation, utilization conflicts and noise pollution from air-source heat pumps. The project will establish the use of the heat source external air in combination with seasonal storage as a particularly efficient alternative for heating, cooling and hot water supply.
OEKOPLUS-KOMPLEX - Analysis of the technical, economical and ecological preconditions for the establishment and utilisation of plus-energy-buildings and building assemblies
The evolution of the low energy house and the passive house standards to the plus energy standard results in a clear reduction of green house gas emissions as well as the primary energy input. The goal of the project was the determination of the technical, ecological and economic basic conditions for the construction and the use of "plus-energy-buildings" in order to finally realize them.
OPEN HEAT GRID - Open Heat Grids in urban hybrid systems
The primary research topic of OPEN HEAT GRID was to investigate the possibilities of enforcing the feed-in of industrial waste heat into existing district heating networks. The project results show that excess heat is not for free: despite minimal variable costs, the investment costs need to satisfy usual payback periods. The analysis shows that there is no need for a regulation in the sense of a feed-in obligation or market liberalization. However, from an economic point of view, information asymmetries exist, which may lead to irrational decisions.
OWA+Quartier - Sustainable refurbishment and energy supply for the historic Otto-Wagner-Areal towards a plus-energy district
Development of thermal and electrical energy supply for the Otto-Wagner-Areal as well as model solutions for construction and building services in order to initiate the redevelopment of the area in the direction of a plus-energy district.
Operational and maintenance costs in passive houses and low energy houses
How much energy does a passive house actually save? Does a passive house pay-off by itself? What are the costs for maintancence? For the first time an approximation for the running costs of a passive house were systematically documented and compared.
OttoWagner-ArealPlus - Feasibility study for a certified plus-energy-district-renovation of the listed Otto-Wagner-Area
Development of an innovative concept for the transformation of the Viennese Otto-Wagner-Area into a plus-energy-quartier while meeting requirements of cultural heritage management. The historic architectural jewel covers an area of around 50 hectares, consists of 70 buildings and a gross floor area of around 200,000 m². The solution meets highest energy efficiency standards and comfort requirements.
P2H-Pot - Potentials, economic feasibility and system solutions for Power-to-Heat
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.
PEAR – Test facility for energy efficient automation and control of buildings
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".
PEQBacker: Integrated District Planning - Enabler on the way to a Plus-Energy District
Development of guidelines for the implementation of Plus-Energy District coordination units based on research of success factors, exploration of mission elements of existing structures and consultation of a broad stakeholder group with the goal of increasing the transformation of existing and emerging neighbourhoods toward Plus-Energy Districts.
PESI - Paradigm shift in urban energy systems through synergies with industry
Analysis of different options for the use of industrial surplus energies of various shapes (waste heat, waste water, waste) and renewable energy sources in the industrial sector (e.g. solar panels on roof surfaces) in adjacent urban areas, which act as an "energy sponge". Based on real consumption and availability data, a simulation model was created and opportunities for synergies were documented.