Energy supply for large farmhouses

Combination of hybrid solar modules with ground register and ice store

The test object "Sunnegg" was built around 1840. After the replacement of the stable section, it has 23 rooms for approx. 16 people. With controlled living space ventilation, thermally activated ceilings and underfloor heating, heating is efficient in the low-temperature range. The heat is obtained with solar power via a heat pump from the water of the existing slurry pit. In winter, the 150 m3 cool down to 0°C and freeze. In summer, the ice is thawed via hybrid collectors (PVT) and heated to 25°C. The storage capacity of such a slurry pit ice storage covers a large part of the heating and hot water demand. This seasonal storage means that the free summer heat can be used cost-effectively in winter and even cool the surrounding houses in summer.

Project planning is supported by a CTI Innovation Check.