Page 78 - Analysis and Design of Energy Geostructures
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48 Analysis and Design of Energy Geostructures
Figure 2.14 (A) Photograph and (B) sketch of a relevant vertical cross section of the Zürich Airport,
Dock Midfield, in Switzerland. (A) Modified after Pahud, D., Hubbuch, M., 2007a. Measured thermal
performances of the energy pile system of the dock midfield at Zürich Airport. In: Proceedings of
European Geothermal Congress. Bundesverband Geothermie and (B) redrawn after Pahud, D.,
Fromentin, A., Hubbuch, M., 1999. Heat Exchanger Pile System of the Dock Midfield at the Zürich
Airport, Office fédéral de l'énergie, Lausanne, Suisse, p. 49.
and these are socketed in soft soil and rest on a moraine (e.g. a stiff sandstone) layer at
approximately 30 m of depth. Three hundred and six of the 440 piles were equipped
with five U-pipes fixed on their metallic reinforcement and operate as energy piles
(Pahud and Hubbuch, 2007b). The energy piles are made of reinforced concrete and
