Reference projects

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Successfully implemented projects

Some of our most recent projects are listed for you below. Get a first impression of the projects of GN Schweisstechnik, the technological market leader in the field of geothermal technology.
The various projects show you the wide range of applications that GN Schweisstechnik offers you with its entire portfolio.

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Cold local heating Borken-Weseke

The cold local heating network Borken-Weseke was extended by a distributor in OD 225 mm and 40 probes in OD 40 mm, which were manufactured by us. The special feature of the project was the unusual spatial conditions. In order to ensure smooth operation, half of the supply and return lines had to be welded at 90° to each other. The length of a distribution line is approx. 3.80 meters and a height of 3.30 meters. A total of 10 butterfly valves and a blind flange for dirt traps, for example, were installed in this project.

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Pringy Annecy Frankreich

For the Pringy Annecy project in France, we had to design our GN 3 shaft with four modules. With a length of 6 meters, all 52 probes were installed on one side. The probes were realized with a diameter of 50 mm and ball valves with a diameter of OD 50 mm also had to be installed in the inlet. In addition, two main shut-off valves in OD 225 mm were used here.

GN Welding technology

This project is our new building, where we will be pushing ahead with the heat transition at full speed from the end of 2022. A total of 33 boreholes, each 60 meters long, were drilled. Our GN 3 shaft with a length of 3 meters was used. We led all 33 probes out on one side. To achieve this, the supply and return lines run out of the shaft in two rows. The distribution beam – including the main shut-off and thermometer – was set at 110 mm.

Shaft installation on 24.08.

Shaft installation on 25.08.

Ice storage - Linz

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