SolSPONGEhigh – High solar fraction due to thermally activated components in urban environments

Within the framework of the project “solSPONGEhigh – High solar fraction through thermally activated components in urban environments”, the intensive use of thermally activated components as additional thermal storage and sole and thus cost-optimised heat release system in various buildings is being investigated with the primary use of solar technologies (solar thermal or PV). The aim is to achieve almost 100 % coverage of the building’s energy requirements through regenerative energies by activating and using the thermal storage components of the building. In order to cover the heating heat demand and the hot water energy demand of the building, a reference energy supply system with air heat pump was defined and energy supply systems in combination with solar conversion technologies (solar thermal and photovoltaic) were developed.

The use of thermal component activation was simulated using two building types and two energy standards each, and the primary energy savings of the solar concepts were compared with the reference system. In addition, the heat production costs were calculated over a period of 25 years.