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Rear Door Heat Exchanger
(RDHx) Core Flow
High-capacity rack
cooling up to 160 kW.

Efficient and Targeted Rack Cooling

NGC’s RDHx Core Flow is a rear door cooling solution without integrated pump, designed for high-density data centre environments. RDHx Core Flow ensures stable thermal performance and efficient operation under dynamic loads.

NGC’s rear door heat exchangers respond to server load changes in less than 0.5 seconds, ensuring fast and precise thermal regulation.

  • Reduce in energy use up to 90% vs. air-cooled baseline
  • Steady operation rapid thermal response and high reliability
  • Heat reuse potential up to 56°C outlet temperature
  • Full retrofit compatibility. Installs directly onto existing racks no raised floors
    or special containment required

Product Overview

  • Lower energy use and improved PUE.
  • High uptime with built-in redundancy.
  • Scalable design grow rack-by-rack.
  • RDHx up to 160 kW per rack.
  • Suitable for any rack multiple heights (42–52U) and widths (600–800 mm).
  • Maximum energy efficiency with distributed pumping and high water temperature ranges.
  • Reliable uptime with built-in redundancy (fans, sensors, power).
  • Hot-swappable EC fans for uninterrupted operation.
  • BMS-ready with SNMP and MODBUS TCP integration.
  • Modular CDU and pump configurations for flexible deployments.
  • Cooling capacity: 40–160 kW per rack.
  • Airflow: 5,500–10,000 m³/h.
  • Fluid flow: 1.6–6.0 m³/h with 29–104 kPa pressure drop.
  • Power consumption: 300 W nominal / 1,12

Distributed pumping explained in 2 minutes

Download datasheet

Explore our range of Rear Door Heat Exchangers.

Each datasheet provides a detailed overview of cooling capacity, operating temperature ranges, hydraulic characteristics, and integration requirements enabling accurate evaluation of rack-level performance.
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