Geo structures
Overview

In buildings, which need foundation-stakes, it is possible to equip the stakes with heat exchangers. Thereby they will become energetic geo-structure and give the possibility to supply the building with heat in winter and with cold in summer time.

Warmth and cold under the building

Energiepfahlsystem für Heizung und Kühlung.Geostructures are constructions in the ground or in contact with it. Mainly they are stakes, walls and ground plates, which are needed, in order to achieve a sufficient load-carrying capacity and stability of the underground. Geo structures are mostly made of concrete, manufactured with or without reinforcing.

The heat conductivity and the storage capacity of the concrete make it an ideal material for the absorption of warmth. Besides the ground temperature in some meters depth (15-20 m) is constant (9 - 11° C in the local climate). This temperature level can be used in the summer for cooling and in the winter for heating.

The geo structures needed in order to support and establish the basis of a building can be equipped with heat exchangers of any magnitude. The concrete-stakes and -walls, standing in contact with the underground, are being equipped with plastic pipes in order to provide a proper warmth or cold exchange with the underground. These pipes are supplied bundled to one or several heat pumps.

The impact of the plant is based on a yearly cycle, with which during the heating season, warmth  is withdrawed from the underground (cold feedback into the underground) and during the cooling period cold is withdrawed from the underground (heat feedback into the underground). The installed thermal output varies between some KW up to 1 ' 000 KW.

The advantages of this kind of plants express themselves in the reduced operating cost and the omission of fossil fuels (approx. 80%) and in a reduction of the CO2-Emission (45% to 100%).