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Rack Mounted Liquid to Liquid Cooling CDU for AI Data Centers

4U Rack-Mountable Liquid-to-Liquid Cooling Distribution Unit for High-Density Liquid Cooling Loops

The EXTRCOOL Rack-Mounted Liquid-to-Liquid (L2L) Cooling Distribution Unit is a compact, standard rack-mountable CDU purpose-built for high-density liquid cooling deployments in AI and HPC data centers. Designed to pair with NVIDIA GB200/GB300 and next-generation GPU servers, this unit enables efficient heat transfer between server cold plate loops and facility chilled water systems, supporting rack power densities up to 100kW and beyond.

    Core Technical Advantages

    • Compact Rack-Mount Form Factor Standard 4U rack design fits directly into server racks, eliminating the need for dedicated floor space and simplifying integration with chilled water networks.
    • Efficient Liquid-to-Liquid Heat Exchange High-performance plate heat exchangers transfer waste heat from server loops to chilled water systems, supporting high heat loads for dense AI clusters.
    • Integrated Monitoring & Control Front-mounted touchscreen HMI with real-time temperature, flow, and pressure monitoring, supporting remote management and BMS integration.
    • Plug-and-Play Deployment Pre-configured piping, pumps, and sensors enable rapid connection to server manifolds and facility chilled water systems, cutting commissioning time.
    • Leak-Proof, Enterprise-Grade Design Reinforced connections and factory pressure-tested components ensure reliable, 24/7 operation for mission-critical workloads.

    Product Specifications

    Attribute

    Specification

    Brand

    EXTRCOOL

    Model Series

    CDU-L2L Rack Series

    Cooling Type

    Liquid-to-Liquid (L2L) Chilled Water Heat Exchange

    Product Category

    Rack-Mounted Cooling Distribution Unit

    Form Factor

    4U standard rack

    Compatible Systems

    Server cold plate loops, chilled water networks

    Place of Origin

    Guangdong, China

    Ideal Application Scenarios

    • Large-Scale AI Data Centers: Supports high-density liquid cooling deployments for GB200/GB300 GPU clusters.
    • HPC & Supercomputing Facilities: Delivers reliable cooling for scientific computing and engineering simulation workloads.
    • New-Build Liquid Cooling Data Centers: Optimized for facilities with existing chilled water infrastructure.
    • Ultra-High Power Density Racks: Supports 50kW+ rack loads for next-generation AI servers.
    • Modular Liquid Cooling Architectures: Ideal for scalable, incremental cooling deployments.

    Why Choose EXTRCOOL Rack-Mounted L2L CDU?

    The rack-mount form factor eliminates the need for standalone CDU units, offering a space-saving, high-capacity solution for liquid cooling deployments. EXTRCOOL’s L2L CDU combines efficient heat exchange, integrated monitoring, and simplified installation to meet the demanding needs of AI and HPC workloads, ensuring stable, energy-efficient operation year-round.

    Frequently Asked Questions

    1.What is a rack-mounted L2L CDU used for?
    A rack-mounted L2L CDU transfers waste heat from server liquid cooling loops to facility chilled water systems in a compact rack form factor, ideal for space-constrained data centers with chilled water infrastructure.

    2.What are the benefits of a rack-mounted vs. standalone L2L CDU?
    The rack-mount design fits directly into server racks, reducing piping complexity and eliminating the need for dedicated floor space. It is fully pre-tested at the factory, minimizing on-site installation errors and ensuring consistent performance.

    3.Is the unit compatible with standard chilled water systems?
    EXTRCOOL’s rack-mounted L2L CDU supports standard chilled water pressures and temperatures, with customizable connections to match most facility chilled water networks. Contact our engineering team for tailored compatibility verification.

    Product Specification

    Liquid-to-Liquid Cooling Distribution Unit (L2L CDU)
    Model Number EXT-CDU35LR EXT-CDU50LR EXT-CDU100LR EXT-CDU120LR EXT-CDU150LR EXT-CDU200LR EXT-CDU250LR
    Installation Type In Rack
    Rated cooling capacity 35kW 50kW 100kW 120kW 150KW 200KW 250KW
    Coolant PG25 PG25 PG25 PG25 PG25 PG25 PG25
    Working environmentT&H -10℃~55℃/ RH5~90%
    Storage environmentT&H -45℃~70℃/RH5~93%
    Inch display screen 4.3" 4.3" 4.3” 7" 7" 7" 7"
    Approach temperature 5℃ 5℃ 5℃ 5℃ 5℃ 5℃ 5℃
    Primary side air or liquid temp.(in/ out) 35℃/45℃
    Secondary side liquid temp.(out/ in) 40℃/45℃ 40°C/45℃ 40℃/50℃ 40℃/50℃ 40°C/50℃ 40℃/50℃ 40℃/50℃
    Secondary side rated flow rate 120LPM 160LPM 160LPM 190LPM 240LPM 320LPM 400LPM
    Power Supply AC220V 50/60Hz 3P AC380V 50/60Hz
    3P AC480V 60Hz
    Dual power ATS Yes Yes Yes Yes Yes Yes Yes
    Leak Detection Yes Yes Yes Yes Yes Yes Yes
    Redundant Pump Automatic Switchover 1+1 1+1 1+1 1+1 1+1 1+1 1+1
    Power consumption <0.8kW <0.8kW <0.8kW <1kW <2.5KW <2.8KW <3KW
    Bypass Online Replaceable Filter No No No No No No No
    Control type PID control method, Adjust flow rate according to temperature
    Communication Modbus RTU&TCP/IP
    Approx. Weight 50kg 65kg 75kg 85kg 80kg 100kg 110kg
    Protection level IP55 IP55 IP55 IP55 IP55 IP55 IP55
    Dimensions(Wx D x H) mm 482x870x177.8 482x870x177.8 482x870x177.8 482x870x217.2 482x870x217.2 482x870x265 482x870x265

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