The new Salzburg Main Station has not only a unique position regarding its architectural appearance, but also highlights behind the modern facades in the matter of trendsetting and environmental friendly energy supply. Due to the poor ground conditions, deep foundations in the form of driven steel cased piles were necessary. These piles could be used as energy sources together with several borehole heat exchangers to supply the building complex with heating and cooling energy. This article describes the technical basics of the geothermal energy usage and discusses the technical and economical parameters of the project.
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By Johann Hofinger