Near slope area on the green area are placed the geothermal probes for energy generation of the new heating /­ cooling supply. Each geothermal probe (double U-pipe) can be individually shut off and throttled at the geothermal probe distributor. The geothermal probe distributors are installed in a buried shaft next to the geothermal probe field.

The supply lines from the borehole heat exchangers to the distributor are installed in trenches. The distribution shaft is installed stably on a separate concrete foundation. The dimensions of the distribution shaft are approx. 5m in length and 2.6m in depth. After connecting the supply lines, a pressure distribution plate was concreted over the distribution manhole.
The penetrations must be tight up to a water pressure of 10 mWs.

Each probe circuit is monitored by special temperature sensors. This allows a change in temperature to be detected quickly. The distribution shaft is equipped with lighting with external power supply. Furthermore, a CO2 warning light was also installed at the manhole entrance.

Construction:

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Zurich Airport
Heating/­Cooling system
Werkhof W22 und W23
CH-8058 Zürich-Flughafen

Used Products:

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• 34 GEROtherm^® Geothermal probes PE100-RC, PN 16, de 40mm length 250m
• 1 shaft type 3 with 34 connections.
  Including lighting and CO2 warning light
• 2 Collectors/­Distributors SAVE 180
  Each with 34 outlets equipped with ball valves, line regulating valves and temperature sensor
• 34 grouting tubes PE-HD de 25mm Länge 252m
• 34 weights EWS UL40 12,5kg
• 3400m GEROfit-R casing pipe PE 100 RC
  De 50x 4.6mmS5PN16 Including all necessary fittings