Based on the promising results of combining outside air and geothermal probes in the HP Source project, this project is developing alternative heat source combinations to overcome restrictions when replacing heating systems, e.g. in the event that geothermal probes are not possible. The aim is to develop a planning basis for favorable source combinations in terms of integration, design and control using simulation. By implementing and monitoring a real pilot system, the parameter variations are verified, enabling well-founded statements to be made about real operating behavior and economic efficiency in comparison to other bivalent solutions, as well as documenting a best practice system. Through knowledge transfer, a contribution can be made to the decarbonization of the building stock due to the high multiplication potential of multi-source systems for heating replacement, especially in dense urban environments.
