Innovative Technologien & Methoden für Raumluftkomfort und Energieoptimierung in Thermengebäuden

The project aims to reduce the high energy consumption in Austrian thermal baths and wellness facilities. Due to specific architectural features such as large glass façades, asymmetrical building shapes and high humidity, traditional energy-saving measures are not sufficiently effective. Furthermore, factors such as fluctuating visitor numbers and variable solar radiation complicate energy optimisation.

To address these challenges, existing models from building simulation programmes such as TRNSYS, EnergyPlus and IDA ICE are to be evaluated and further developed. The aim is to model multi-zonal structures, air flows and moisture loads more accurately. Particular attention is being paid to modelling evaporation from pool surfaces and water vapour turbulence caused by attractions such as slides.

Another focus is the introduction of AI-supported, predictive controllers for heating, ventilation and air-conditioning (HVAC) systems. These are intended to enable dynamic and proactive adaptation to changing conditions, leading to more efficient energy use.

Furthermore, the findings from the project are intended to optimise the renovation process and promote the use of building simulation models during the planning phase. In addition, the selected renovation measures are to be assessed at the building services level in terms of their life-cycle impacts.

The Sonnentherme serves as a potential use case, as it has a high annual heat demand and therefore offers significant potential for savings. By implementing the project objectives, the aim is to achieve substantial energy savings, reduce CO₂ emissions and improve visitor comfort. The project thus makes an important contribution to sustainability and climate neutrality in the spa industry.