Military Embedded Systems

PRODUCT OF THE WEEK: nVent SCHROFF’s 4U LHX Air-to-Liquid-Heat Exchanger

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August 17, 2026

This week’s product, the Acromag nVent SCHROFF 4U LHX Air-to-Liquid-Heat Exchanger, provides multiple levels of cooling performance, enabling users to achieve higher computing density in new racks and existing applications. The commercial off-the-shelf (COTS) ruggedized version can meet the requirements of military naval and land-based defense applications.

The 4U LHX’s cooling capabilities keep mission-critical electronics from overheating caused by the performance of artificial intelligence (AI) chips & GPUs, where conventional methods of in-rack forced air or air conditioning are often not enough. Its COTS-based architecture, enables configuration flexibility while reducing development time and lead times.

Advanced Cooling Features

  • Provides up to 7.5 kW heat dissipation using integrated fan units
    • Can be configured to run in low energy, then the device can achieve low thermal load with low noise.
    • If higher cooling is desired, 2 LHX units can be installed in one cabinet to achieve up to a 15 kW thermal load.
  • Designed for front-to-rear airflow, aligned with standard rack cooling architectures
  • Physical separation of intake and exhaust air paths to prevent thermal recirculation
  • Cooling positioned close to heat-generating components, enabling fast response to thermal load changes
  • Supports dynamic adjustment of liquid flow and airflow for stable operating conditions

General Features

  • Complies with EMC requirements, ensuring reliable operation in sensitive electronic systems
  • Designed for tool-less or simplified mounting in standard 19" environments
  • Designed to be retrofittable into a 19” cabinet with a minimum depth of 800 mm
  • Integrated controller with intelligent fan speed regulation based on thermal demand
  • Liquid use: Water 100%, or PG mixtures up to 50% or EG mixtures up to 50%
  • Equipped with temperature sensors at both intake (cold) and exhaust (warm) air zones for accurate thermal profiling
  • Enables local and remote monitoring and control through system interfaces
  • Power input is 100 ~ 240 VAC power.

For more information, visit the 4U LHX page here, or visit the company’s website, or follow the links below.

Resources:

  • To view a video on the 4U LHXclick here.
  • To learn more about nVent SCHROFF’s rugged enclosures, click here.
  • To learn more nVent SCHROFF’s LHX In-Rack Cooler, Air/Liquid Heat Exchangerclick here.
  • For sales information, click here.

 

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nVent Schroff

7328 Trade Street
San Diego, CA 92121