Dry cooler EXT series

Overview
Air-cooled liquid dry cooler for high-density liquid cooling systems. Designed for mission-critical liquid cooling infrastructure in AI and HPC data centers, EXTRCOOL’s Dry Cooler efficiently dissipates waste heat from CDU loops to enable reliable, low-PUE operation for high-power GPU servers and dense racks. As data center rack power density scales beyond 50 kW/rack, this enterprise-grade unit provides continuous, energy-efficient heat rejection for 24/7 uptime.

Core Technical Advantages

• High-efficiency heat rejection: Large-area finned-tube heat exchanger combined with high-static fans maximizes air-side heat transfer, rejecting heat from closed liquid loops without chilled water systems.
• Rugged containerized design: Built to ISO container standards for outdoor deployment with weather-resistant enclosures, corrosion-resistant coatings, and vibration-damped structures.
• Scalable modular architecture: Multi-fan parallel configuration allows flexible capacity matching, supporting 100 kW to MW-scale liquid cooling systems.
• Low-noise & energy-saving operation: Variable-speed EC fans adjust airflow based on coolant temperature to reduce power draw and lower PUE.
• Plug-and-play integration: Standard flange connections and pre-tested piping simplify integration with CDU, cold plate and manifold systems for rapid deployment.

Product Specifications
Attribute: Specification
Brand: EXTRCOOL
Model Series: DC-Series Dry Cooler
Product Type: Dry cooler (DC)
Cooling Type: Air-to-liquid dry cooling
Product Category: Liquid cooling heat rejection unit
Compatible Systems: CDU, liquid cooling racks, cold plate loops
Place of Origin: Guangdong, China
Installation Type: Horizontal installation
Coolant: PG40
Working environment T&H: -30°C ~ 45°C / RH5 ~ 90%
Storage environment T&H: -45°C ~ 70°C / RH5 ~ 93%
Air & Liquid temp gap: typically 10°C (varies by model)
Air temp (in/out): typical 30°C / 40°C
Secondary side liquid temp (out/in): ranges by model (examples: 35°C/40°C; 38°C/43°C; up to 44.5°C for larger units)
Air flow rate (by model): EXT-150DC: 50,000 m³/h • EXT-200DC: 60,000 m³/h • EXT-300DC: 100,000 m³/h • EXT-600DC: 240,000 m³/h • EXT-1000DC: 300,000 m³/h • EXT-1600DC: 540,000 m³/h • EXT-2000DC: 600,000 m³/h
Liquid flow rate (by model): EXT-150DC: 500 LPM • EXT-200DC: 650 LPM • EXT-300DC: 1000 LPM • EXT-600DC: 2000 LPM • EXT-1000DC: 3200 LPM • EXT-1600DC: 4000 LPM • EXT-2000DC: 5000 LPM
Power Supply: 3P AC 380V 50/60Hz (also 3P AC 480V 60Hz option)
Dual power ATS: Yes
Control type: PID control method, regulating fan speed based on temperature sensor (supply/return water)
Leak Detection: Yes
Redundant Fan Automatic Switchover: N+1 configuration
Power consumption (by model approximate): EXT-150DC < 5 kW • EXT-200DC < 8 kW • EXT-300DC < 12 kW • EXT-600DC < 28 kW • EXT-1000DC < 32 kW • EXT-1600DC < 58 kW • EXT-2000DC < 67 kW
Communication: Modbus RTU & TCP/IP
Design pressure: > 10 Bar
Protection level: IP55
Approx. Weight (by model): EXT-150DC: 800 kg • EXT-200DC: 1200 kg • EXT-300DC: 1650 kg • EXT-600DC: 3800 kg • EXT-1000DC: 4000 kg • EXT-1600DC: 7800 kg • EXT-2000DC: 8000 kg
Dimensions (W x D x H) mm (by model): EXT-150DC: 1850 x 2200 x 2100 • EXT-200DC: 2250 x 2200 x 2100 • EXT-300DC: 2850 x 2200 x 2100 • EXT-600DC: 5800 x 2280 x 2535 • EXT-1000DC: 5800 x 2280 x 2535 • EXT-1600DC / EXT-2000DC: 11900 x 2280 x 2535

Ideal Application Scenarios

• AI data centers: Reliable heat rejection for GPU liquid cooling systems supporting high-density AI training workloads.
• HPC & supercomputing clusters: Efficient cooling for scientific computing and engineering simulation liquid cooling loops.
• Retrofit air-to-liquid cooling: Enables upgrades for traditional air-cooled data centers without chilled water infrastructure.
• Edge & colocation data centers: Supports outdoor, space-constrained deployments with containerized, compact form factors.
• Hybrid liquid cooling architectures: Integrates with CDU systems for partial or full liquid cooling solutions.

Why Choose This Dry Cooler?
Dry coolers eliminate the need for complex chilled water systems, offering a scalable heat rejection solution for liquid-cooled data centers. This unit combines high thermal efficiency, rugged deployment readiness and flexible integration to meet evolving AI and HPC workloads while supporting stable, low-noise, energy-efficient operation year-round.

Frequently Asked Questions

• 1. What is a dry cooler used for in liquid cooling systems? A dry cooler rejects waste heat from liquid cooling loops to ambient air and serves as the heat rejection unit for CDU systems, removing the need for chilled water systems.
• 2. Why use a dry cooler instead of a cooling tower? Dry coolers operate without water evaporation, eliminating water consumption and Legionella risk, and typically require lower maintenance.
• 3. Is the dry cooler compatible with CDU systems? EXTRCOOL dry coolers support standard liquid loop pressures and temperatures and offer customizable flange connections to match most commercial CDU and liquid-cooling rack systems.

Technical specifications / Caractéristiques

• Brand: EXTRCOOL
• Model Series: DC-Series Dry Cooler
• Product Type: Dry cooler (DC) – Air-to-liquid dry cooling
• Part Numbers: EXT-150DC, EXT-200DC, EXT-300DC, EXT-600DC, EXT-1000DC, EXT-1600DC, EXT-2000DC
• Rated cooling capacity: 150 kW – 2000 kW (model dependent)
• Coolant: PG40
• Installation: Horizontal
• Operating ambient: -30°C to 45°C; Storage: -45°C to 70°C
• Control & communication: PID fan control; Modbus RTU & TCP/IP
• Design pressure: > 10 Bar
• Protection: IP55
• Redundancy: N+1 fans, dual power ATS available
• Typical power supply: 3P AC380V 50/60Hz (3P AC480V 60Hz option)
• Approx. weight & dimensions: see model-specific values above