The theory of active thermal insulation

Active thermal insulated building 1.5 to 2.0 meters below the surface of the Earth is nearly constant + 8, +12 C, at 18 m depth all year around +10 C temperature prevails. In such depths the unlimited access to this low-temperature medium is relatively low-cost. This energy is renewable, non-polluting and free. Due to its temperature, this medium cannot be directly used for heating, it is commonly used as input for heat pumps by adding electric energy. However, this medium can be directly utilized.

In contrast to the usual procedures, with active thermal insulation we use the temperature of the soil for thermal insulation by using coils around the wall of the house. The coil is connected to a soil probe or a soil absorber and the liquid in that flows with the help of a small (50-70W) flow pump. The operation of this system may results the heat loss of the house on a low, constant level, independently from the external temperature.

Temperature of the soil to 20m depth during the year An active thermal insulatied building structure of smaller thickness can have the same properties, as more thicker passive insulated buliding sctructures, so we get more interior size. The active thermal insulation adapts to external conditions in a smart way, such as the more the extreme outside temperatures are, the more effective the thermal insulation is. The active thermal insulation cools the interior in summer and does not let the external heat load inside.




Temperature of the soil to 20m depth during the year