Geo structures
Detailed information
Energy stakes
Reinforced
concrete stakes have mostly a diameter between 0.4 and 1.5 m and a length
starting with some meters to over 30m. According to the stake diameter
inside usually a double or a quadruple U pipe or a pipeline made of
polyethylene are brought in. These pipes are surrounded completely with
concrete, in order to manufacture a good thermal contact to the
underground. In the closed cycle between the pipings in the stakes and the
heat pump, a heat transfer liquid circulates to withdraw warmth or cold
from the underground. With this energy system, either all or only one part
of the foundation-stakes can be equipped.
This simple and appropriate technology produces no excessive extra
costs, but must be implemented into the project planning of construction
and energy concept from the beginning. Recently there are more than 350
installations of energetic geo- structures in Austria and in Germany,
whose installed achievements are of some 10 KW for small buildings, up to
1 ' 000 KW for large industrial buildings.
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