Liquid/liquid cooling distribution unit

rack-mountfor data centers

Product Overview EXTRCOOL Liquid‑to‑Liquid Cooling Distribution Unit (CDU) is a compact 19‑inch rack‑mount cooling module engineered for high‑density AI and enterprise data centers. It provides an isolated, low‑pressure, ultra‑clean coolant circuit for liquid‑cooled servers. Nominal cooling capacity is 50 kW (supports higher heat loads in specific high‑density deployments). The unit uses a high‑efficiency liquid‑to‑liquid plate heat exchanger to bridge facility chilled‑water loops and IT equipment coolant circuits.

Core Technical Advantages

• Isolated dual‑loop architecture Physical separation of the facility (primary) chilled‑water loop and the equipment (secondary) coolant loop to deliver low‑pressure, contaminant‑free coolant to servers, preventing corrosion, scaling and blockages.
• Flexible deployment & integration 19‑inch rack form factor supports integrated in‑cabinet mounting for plug‑and‑play installations or standalone deployment in dedicated CDU cabinets for centralized cooling of modular data centers.
• Redundant design for 24/7 reliability 1+1 pump redundancy eliminates single points of failure in fluid circulation; 1+1 dual power support provides uninterrupted power to critical components.
• High‑efficiency filtration & heat exchange Built‑in cleanable 50 μm secondary filter with low pressure drop; premium copper welded plate heat exchanger with S316 stainless steel construction delivers high thermal transfer (typical 50 kW with ≈4 °C ΔT between loops).
• User‑friendly installation & maintenance Sanitary stainless steel quick‑connects and quick‑flange fittings simplify leak‑free pipeline integration and service access; supports constant differential pressure and constant flow control with manual and forced modes.
• Smart monitoring & BMS compatibility Real‑time health monitoring and alarms; multi‑protocol connectivity including Modbus/RS485, TCP/IP and SNMP for integration with BMS and cabinet management systems.
• Energy‑efficient operation At 50 kW class cooling the unit consumes <700 W at maximum flow; supports warm‑water cooling to enable low‑PUE operation and reduced energy cost.

Product Specification Nominal cooling capacity: 50 kW
Secondary side flow capacity: 100 LPM (machine external residual pressure 1 bar)
Secondary coolant: Ethylene glycol / Propylene glycol solution (PG25) or compatible single‑phase fluid
Primary coolant: Water or ethylene glycol solution
Redundant water pump: 1+1 redundancy
Single‑side pressure drop: 0.8 bar (typical condition: 80 LPM, 20% ethylene glycol)
Secondary coolant temperature range: 10–45 °C (dew point control)
Temperature difference example: 50 kW with ≈4 °C ΔT between loops
Maximum power consumption: ≤700 W at maximum flow
Dimensions (W x D x H): 175 mm x 445 mm x 900 mm; dry weight: 65 kg
Noise (3 m): <58 dBA
Power supply: AC single‑phase 85–265 V, 50/60 Hz; dual power supported
Primary connection: Sanitary 1‑1/2" chuck connection
Primary solution volume: 6 litres
Secondary connection: Sanitary 1‑1/2" chuck, optional quick‑connect
Secondary filter: Built‑in 50 μm, cleanable
Secondary solution volume: 10 litres
Flow measurement: Primary and secondary flow monitoring
Pressure sensors: Secondary return, supply pressure, filter differential, system differential
Temperature sensors: Primary inlet, secondary supply (1+2 redundancy) and return temperatures
Other sensors: Room temperature and humidity
Water management: Automatic water replenishment (pump), manual venting
Expansion tank: 1 litre
Communication: RS485 RTU Modbus, TCP/IP, SNMP

Technical Specifications

• Type: Stainless‑steel liquid‑to‑liquid CDU, 19‑inch rack
• Rated cooling: 50 kW (nominal)
• Typical flow/pressure: 100 LPM at 1 bar residual; typical ΔP 0.8 bar at 80 LPM
• Compatible fluids: Water, ethylene glycol, propylene glycol (PG25)
• Redundancy: Pump 1+1; dual power
• Max input power: ≤700 W (max flow)
• Dimensions: 175 × 445 × 900 mm; dry weight 65 kg
• Acoustics: <58 dBA at 3 m
• Connections: Sanitary 1‑1/2" (primary/secondary), optional quick‑connect
• Monitoring & comms: Multi‑sensor suite and RS485/TCP‑IP/SNMP