Liquid-air cooling distribution unit

rack-mountfor data centers

Product overview
The EXTRCOOL Air-to-Liquid CDU (Cooling Distribution Unit) is a compact, rack‑mount hybrid cooling unit intended to enable liquid‑cooled server deployments in existing air‑cooled data centers without major infrastructure changes. The unit uses an air‑to‑liquid heat exchanger to dissipate heat from liquid‑cooled servers into room air. Its 6U form factor supports liquid‑cooled server loads up to 13 kW for phased or mixed‑cooling installations.

Key Features & Benefits

• Drop‑in liquid cooling for air‑cooled sites — avoids dedicated chilled‑water loops or room retrofits, enabling incremental adoption of liquid‑cooled hardware.
• 6U rack‑mount design — fits standard 19" racks to maximize usable rack space while providing required cooling capacity.
• Performance at standard ambient conditions — rated for 13 kW at 25 °C ambient with coolant supply ≤ 40 °C under nominal conditions.
• Corrosion‑resistant, coolant‑compatible construction — stainless‑steel piping and copper heat exchangers compatible with deionized water, 25% propylene glycol and similar fluids.
• Redundant components — dual‑pump (1+1), dual‑fan and dual‑power (1+1, ATS) provision to reduce single points of failure.
• Filtration & monitoring — built‑in 100 μm coolant filter and continuous monitoring of ambient/exhaust air temps, coolant supply/return temps and pressures with dynamic control.
• Local and remote control — 7" touchscreen HMI for local control; remote monitoring and BMS integration via TCP/Modbus RS485; CANBUS group control supported.
• Simplified deployment & maintenance — automatic/manual water replenishment and streamlined commissioning procedures.

Product Specification (extracted from specification table)
Nominal cooling capacity: 13 kW (25 °C ambient, RH50%, supply temperature 40 °C)
Air volume: maximum air volume ≥ 2200 m3/h
Water pump: dual pump design (1+1 redundancy)
Coolant: deionized water, 25% propylene glycol solution, other compatible fluids
Hydraulic performance: flow rate 24 LPM; external residual pressure 1 bar
Liquid circuit: max operating pressure 1.5 bar; pipeline test pressure 10 bar
Moisturizing: automatic water replenishment when system pressure is below set pressure
Filter: built‑in 100 μm filter
External interface: rear panel 1" chuck interface, convertible quick‑connect ball valve
Power supply: dual power, ATS; 220 V AC (50/60 Hz) / 24 V DC
Typical power consumption: 950 W
Controller: liquid‑cooling controller, ARM processor, DDR RAM, 7" touchscreen HMI
Firmware: liquid cooling control firmware monitoring supply/return temps and circuit parameters
Alarms: pressure, inlet/outlet air temperature, coolant temperatures, etc.
Communications: CANBUS group control; TCP/Modbus RS485 for BMS integration
Dimensions: 445 x 960 x 266.7 mm (W x D x H)
Weights: net weight 80 kg (other mentions: 90 kg); operating weight 96 kg; transport weight 95 kg

Technical characteristics / specifications

• Form factor: 6U rack‑mount
• Rated cooling capacity: 13 kW (25 °C ambient, RH50%, supply ≤ 40 °C)
• Maximum air volume: ≥ 2200 m3/h
• Pumps: dual pump 1+1 redundancy
• Coolant compatibility: deionized water, 25% propylene glycol, other compatible fluids
• Flow rate: 24 LPM; external residual pressure: 1 bar
• Max operating pressure (circuit): 1.5 bar; pipeline test pressure: 10 bar
• Filtration: built‑in 100 μm filter
• Interfaces: rear 1" chuck and convertible quick‑connect ball valve
• Power: dual power supply, ATS; 220 V AC (50/60 Hz) and 24 V DC support
• Typical power consumption: 950 W
• Controller & HMI: ARM processor, DDR RAM, 7" touchscreen
• Monitoring & alarms: coolant supply/return temps, pressures, inlet/outlet air temps, pressure alarms
• Communications: CANBUS, TCP/Modbus RS485
• Dimensions (W x D x H): 445 x 960 x 266.7 mm
• Weights: net ~80–90 kg; operating 96 kg; transport 95 kg