When physical advantages make the difference

International geothermal projects place particularly high demands on technology, logistics, and cost-effectiveness. Solutions that work locally quickly reach their physical and economic limits when project volumes increase.

The GN X is increasingly demonstrating that an intelligent, consistently well-thought-out design can overcome these limitations — and also makes the product attractive internationally.

The current project in the UK confirms exactly that.

The challenge of large-scale international projects

The planned geothermal project in Bristol requires an infrastructure that must achieve three things simultaneously:

• Very high number of probes
• High mechanical resilience
• Cost-effective implementation across transport, installation, and operation

Traditional spiral pipe or concrete shafts fulfill some of these requirements, but not all of them at the same time.

This highlights a key problem in the market: Load capacity is often still determined by material mass.

The GN X: High load-bearing capacity without mass

The GN X takes a different approach. Instead of weight, it relies on an intelligently statically optimized design with proven statics. The high load-bearing capacity is not a theoretical value, but has been proven by tested type statics. The GN X achieves a load capacity of up to 40 tons without relying on massive concrete structures or oversized wall thicknesses.

The result:

• Trafficability up to 40 tons
• Load class B125
• High safety without massive structures

This performance combined with significantly lower weight is a decisive advantage—especially for international projects with complex logistics.

Less weight = lower transport and construction costs

Transport is a key economic factor in international projects. This is where the GN X really comes into its own:

• Significantly lower dead weight than concrete or spiral pipe chambers
• Less transport effort
• Easier handling on the construction site
• Less excavation due to compact design

All in all, this significantly reduces transport, construction, and assembly costs – an argument that is becoming increasingly important in international tenders.

Scalability as the key

The customer opted for the following design for the project:

• 8 × GN X4 with 60 probes each
• 1 × GN X4 with 62 probes
• plus 3 Pipe Winding Chambers

Total: 542 geothermal probes

This number shows how efficiently the GN X structures large probe fields — with fewer chambers and clear technology.

Technical implementation in detail

The GN X chambers were technically designed as follows:

• GN X4 with 60 or 62 probes
• Probe diameter: DA 40 mm
• Main distributor: DA 160 mm
• Ball valves: DN 25
• Flow meter: 5–42 l/min
• Flow: with shut-off valve
• Return: DN 150 Crane DM 941 line control valve
• Load class: B125

This configuration enables precise control, high operational reliability, and long-term ease of maintenance.

Why there is currently no comparable product

The GN X combines features that were previously unavailable in a single product:

• High load capacity up to 40 tons, type-tested
• Proven statics through type statics
• Low dead weight despite high load class
• High number of probes per shaft
• Reduced transport and construction costs

It is precisely this combination that makes the GN X unique on the market – and explains why it is increasingly being used in international projects.

The load capacity of the GN X up to 40 tons is based on tested structural analysis calculated for 50 years, even under unfavorable load conditions, and offers planners and builders maximum safety—even for international projects.

THINK X – Design instead of mass

The GN X stands for a clear philosophy: Better design, not more material, is the key to high-performance infrastructure.This way of thinking is internationally understandable – and the reason why the GN X opens up markets instead of having to adapt.

Conclusion: A product with international relevance

The project in the UK shows that the GN X is not only technically impressive,

but also offers economic and logistical advantages that are decisive internationally.

GN X – One chamber. All loads. THINK X.