High-tech building heated and cooled with ground-source energy using precast driven piles in steel-reinforced concrete - Completion: 1998 - Cooling capacity: 230 kW - Heating capacity: 100 kW - Annual cooling output: 120 MWh - Annual heating output: 60 MWh - Client: Omicron Electronics GmbH, Klaus - A - Architect: Nägele & Waibel, Dornbirn - A - Building services consultant: GMI Ingenieure, Dornbirn - A enercret installation: 112 precast driven piles in steel-reinforced concrete with a length of 12 m are equipped with 11,000 m of HDPE piping 20/2.0 mm and connected to the manifold block in the building services centre via 9,000 m of piping. The water/glycol mixture circulating in the pipe system absorbs the heating and cooling energy and transports it to the heat pump.