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

Efficient and Targeted Rack Cooling

Next Generation Cooling’s active RDHx rear door heat exchanger is engineered for precise, predictable thermal control in high-density data centres.

Designed for AI data centres and HPC environments where rack densities exceed 40–160 kW, the NGC RDHx Active Flow eliminates the thermal limitations of conventional air cooling without requiring structural rebuild or extended downtime.

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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