Schneider Electric unveiled the new Uniflair™ XCA series of air-cooled/free-cooled centrifugal chillers, designed specifically to meet the unique thermal management demands of dense liquid-cooled data centers with high AI and GPU cluster processing requirements.
Two models have been introduced as part of this unveiling: the Uniflair XCAC (standard air-cooled) and Uniflair XCAF (free-cooled). The combination of oil-free centrifugal compressors, frictionless magnetic bearings, and integrated variable speed drives (VSDs) creates an energy-efficient cooling platform, tailored for optimal performance amid varying IT environmental loads.
Engineering Thermal Foundations for AI Infrastructure
The explosive integration of AI and machine learning architectures has driven rack densities past traditional thresholds, transforming cooling systems into a vital link for data center operational continuity and cost mitigation. The Uniflair XCA portfolio addresses this directly across six scalable product sizes ranging from 1,200 kW to 2,500 kW capacity units.
By leveraging high-efficiency spray-type evaporators and ultra-low Global Warming Potential (GWP) refrigerants, the series ensures absolute alignment with strict international climate policies-including the EU F-Gas Regulation 2024/573-without compromising thermal performance. Crucially, the series operates across significantly elevated water output temperature thresholds, making it natively compatible with modern direct-to-chip and immersion liquid cooling loops.
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“Energy efficiency, adaptability and reliability are essential components of liquid cooling systems for AI-optimized data centers, and we’ve designed the Uniflair XCA line with these most important design features at the forefront,” said Andrew Bradner, Senior Vice President, Cooling Business at Schneider Electric. “With adaptable water operating temperatures and versatile deployment options, the XCA line features a system-level approach that gives operators scalability, enhanced performance and long-term peace of mind as data center complexity continues to rise.”
Technical Breakdown of the Uniflair XCA Platform
The system-level design features several innovative concepts in thermodynamics, mechanics, and safety at the facility level:
Oilless Magnetic Bearing Compressors: Completely removes the need for oil lubrication inside the compressor, eliminating problems of oil contamination and friction losses while improving the energy efficiency of the active system up to 25%. The acoustic characteristics are minimal.
Spray Evaporator Design Innovation: Combines an advanced spray evaporator with V-form coils, enhancing the efficiency of thermal exchange while minimizing the required chemical refrigerant charge and physical volume.
Optimized Heat Rejection System: Combines the advantages of modern V-shaped coil design with electronically commutated large diameter fans, thus maximizing airflows and ensuring stable heat rejection even in severe conditions of excessively high ambient temperatures.
XCAF Design Expansion of Free-Cooling Range: Allows maintaining fluid temperature up to 33°C, extending the range where free cooling cycles may be used geographically. This technology can operate in fluctuating ambient conditions from -20°C to +52°C and allows saving up to 60% of energy in comparison with pure mechanical counterparts in moderate climates.
Mission-Critical Fast Restart: Built with strict data center availability top of mind, the integrated controls enable a high-efficiency quick-start cycle, restoring 100% cooling operational capacity within 3 minutes of a primary power interruption.
The Uniflair XCA series is highly configurable, offering facility planners a vast ecosystem of modular hydraulic, electrical, and sound-attenuation accessories to customize the infrastructure to distinct regional requirements and balance capital expense against ongoing management costs.