Case Stories

The question was simple:

Can you convert 10 °C supply water into 15 °C with a flow of 3 m³/h at 1.3 bar differential pressure – reliably, and with precision?

Within weeks, we designed a modified Cooling Distribution Unit capable of delivering up to 5 bar and 5 m³/h, incorporating targeted design adjustments to improve precision and control.

We manufactured the unit and shipped it directly to Saudi Arabia. Installation was carried out by the customer’s engineers, supported remotely by our team.

No local presence was required.

During commissioning, a monitoring-board issue was identified and corrected. The thermal control architecture itself performed as designed from first activation.

The CDU has now operated continuously for four months, maintaining supply temperature within ±0.1 °C.

In quantum computing environments, temperature stability is not an optimisation target – it is a prerequisite.

The project reflects a central principle of our approach:

When system architecture is understood at thermodynamic and hydraulic level, precision is achieved through control – not through excess infrastructure or unnecessary complexity.

It requires engineers who enter the customer’s context, question assumptions, and allow the solution to take shape through dialogue.

NGC took time to understand the challenge before proposing the solution

We proposed rear-door cooling as an alternative

Ceiling height prevented additional fan coils. A downflow CRAH solution was considered, but could not be accommodated. In-row cooling was evaluated, yet available whitespace was limited.

The installation centred on a 42U, 800 mm rack with a 50 kW load. Room temperature was maintained at 23 °C. Server exhaust air was estimated at 45 °C.

We implemented an RDHx with integrated circulation pump, combined with a dry cooler and chiller in a single fluid circuit. The system was engineered to balance airflow, pressure drop, and return temperature – avoiding excessive fan or pump energy while maintaining stable thermal behaviour.

At maximum load, fan power was 735 W and pump consumption 95 W. Under realistic operating conditions, indoor pPUE (partial Power Usage Effectiveness) was 1.0136.

Including dry cooler and chiller operation, total cooling sub-system pPUE reached 1.0294. The dry cooler handled 94% of annual cooling demand based on local ambient temperature data.

• The solution required no structural rebuild.
• It stabilised rack-level thermal behaviour.
• It reduced energy consumption without increasing system complexity.

NGC understood our constraints – and engineered an energyefficient cooling system to match.