Thermal Energy Storage Systems for Energy Efficient Buildings. An integrated solution for residential building energy storage by solar and geothermal resources

Solutions developed

The idea is to develop advanced compact integrated PCM TES tanks exploiting RES (solar and geothermal) in an efficient manner coupled with enhanced PCM borehole heat exchangers (BHEs) that will take advantage of the increased underground thermal storage and maximize the efficiency of the ground coupled heat pumps (GCHP). The two TES tanks developed within TESSe2b project will be integrated with different PCM materials; (i) enhanced paraffin PCM, (ii) salt-hydrates PCM, while in both of them a highly efficient heat exchanger will be included. Even if the concept of phase change thermal stores has been demonstrated.

Main results

A demonstration and on-site monitoring evaluation of small scale TESSe2b solution in buildings in three pilot sites (Austria, Spain, Cyprus) are being conducted in order to evaluate the system’s integration into buildings space, to assess the impact of TESSe2b solution in different climates and to provide evidence about its overall technical and economic feasibility.