ActiGround – Seasonal heat storage through thermal activation of the ground beneath existing buildings

The study examines how boreholes can be drilled from the basement into the ground beneath buildings, and which technology is suitable for activating the ground. Two variants for thermal activation are being investigated: activation using short geothermal probes or via a thermal activated floor slab with heat pipes. Regeneration in summer is achieved, for example, through free cooling, active cooling, ambient air heat exchangers or solar heat. The aim of the project is to demonstrate, using specific examples, how ground-coupled heat pump systems can be efficiently implemented in various building types. 

Feasibility is being investigated in close collaboration with industry partners (drilling companies, planning offices, architects). The project aims to systematically assess technical feasibility, identify key design parameters and lay the groundwork for further simulations, economic analyses and demonstration projects.

Contact: Vera Gütle