Liquid-air cooling distribution unit CDU-LTA

cabinetfor data centers

Overview
The EXTRCOOL Cabinet‑Style Liquid‑to‑Air (LTA) Cooling Distribution Unit is a compact, all‑in‑one CDU engineered for high‑density liquid cooling in AI and HPC data centers. Designed to pair with NVIDIA GB200/GB300 and next‑generation GPU servers, the unit integrates liquid‑to‑air heat exchange, variable‑speed pumps and intelligent controls in a standard rack footprint to simplify deployment and retrofit projects. It supports scenarios above 30 kW per rack while avoiding complex chilled‑water infrastructure and reducing overall PUE.

Core Technical Advantages

• All‑in‑one cabinet form factor: Heat exchangers, high‑static fans, variable‑speed pumps and a smart control system in a single cabinet for plug‑and‑play rackside installation.
• Efficient liquid‑to‑air heat rejection: Directly rejects server cold‑plate loop heat to ambient air, removing the need for external chilled‑water plants.
• Rack‑ready, space‑saving design: Standard rack dimensions enable side‑by‑side placement with server racks and simplified piping layouts.
• Intelligent variable‑speed control: Dynamic fan and pump modulation based on coolant temperature minimizes power draw and lowers data center PUE.
• Enterprise‑grade reliability: Factory‑tested components, reinforced piping, leak detection and redundant pump switchover (1+1) for continuous operation.

Product Specifications (summary)
Brand: EXTRCOOL
Model Series: CDU‑LTA Cabinet Series
Cooling Type: Liquid‑to‑Air (LTA) Direct Heat Rejection
Product Category: Rack‑Mounted Cooling Distribution Unit
Compatible Systems: Server cold‑plate loops, liquid cooling racks
Place of Origin: Guangdong, China

Product Specification (variants)
Part Number: EXT‑CDU60AC / EXT‑CDU120AC / EXT‑CDU300AC / EXT‑CDU600AC
Product Type: Liquid‑to‑Air Cooling Distribution Unit (L2A CDU)
Installation Type: In‑Row (rack‑mounted)
Rated cooling capacity: 60 kW / 120 kW / 300 kW / 600 kW
Coolant: PG25 (all variants)
Working environment (T & H): −10°C ~ 55°C / RH 5~90%
Storage environment (T & H): −45°C ~ 70°C / RH 5~93%
Display: 10.1" HMI (all variants)
Approach temperature: 10°C (all variants)
Primary side temp. (in/out): 25°C / 35°C
Secondary side liquid temp. (out/in): 35°C / 45°C
Secondary side rated flow: 100 / 200 / 500 / 1000 LPM
Power supply: EXT‑CDU60AC: AC220V 50/60Hz; Others: 3P AC380V 50/60Hz / 3P AC480V 60Hz
Dual power ATS: Yes
Leak detection: Yes
Redundant pump automatic switchover: 1+1
Power consumption (approx.): <3.5 kW / <6 kW / <15 kW / <30 kW
Bypass online replaceable filter: Yes
Control type: PID control; adjusts air volume and flow by temperature
Communication: Modbus RTU & TCP/IP
Protection level: IP55
Approx. weight: 350 kg / 480 kg / 850 kg / 1700 kg
Dimensions (W x D x H) mm: 600 x 1200 x 2000 / 1200 x 1200 x 2000 / 3000 x 1200 x 2000 / 6000 x 1200 x 2000

Ideal Application Scenarios

• Data center retrofit: Low‑cost liquid cooling upgrade for existing air‑cooled facilities without chilled‑water plants.
• Medium‑to‑high power density racks: Supports 15–30 kW rack loads for AI training servers and HPC clusters.
• Edge & colocation sites: Cabinet form factor fits space‑constrained deployments.
• Hybrid cooling architectures: Enables phased rollouts combining air‑cooled and liquid‑cooled racks.
• Small‑to‑mid AI clusters: Simplified, low‑maintenance cooling for small GPU deployments.

Frequently Asked Questions

• 1. What is a Liquid‑to‑Air CDU used for? A Liquid‑to‑Air CDU rejects waste heat from liquid cooling loops directly to ambient air, removing the need for chilled‑water systems and simplifying liquid‑cooling deployment.
• 2. Why choose a cabinet‑style LTA CDU over standalone units? The cabinet form factor enables side‑by‑side rack placement, reduces piping complexity, and is factory‑tested to minimize on‑site commissioning time.
• 3. Is the unit compatible with server cold‑plate systems? The CDU supports standard loop pressures and temperatures; flange connections and interfaces can be customized to match most server cold‑plate systems.

Technical Features / Specifications

• Brand: EXTRCOOL
• Model series: CDU‑LTA Cabinet Series
• Cooling type: Liquid‑to‑Air (LTA) Direct Heat Rejection
• Rated cooling capacity (variants): 60 / 120 / 300 / 600 kW
• Coolant: PG25
• Secondary side flow rates: 100 / 200 / 500 / 1000 LPM
• Power supply options: AC220V 50/60Hz; 3P AC380V 50/60Hz; 3P AC480V 60Hz
• Control & communication: PID control; Modbus RTU & TCP/IP
• Redundancy: Pump 1+1; Dual‑power ATS
• Protection: IP55
• Approx. weight: 350–1700 kg (model dependent)
• Dimensions: model dependent (600–6000 mm width)