Data Centers | Informative

Optimizing Data Center Cooling: The Role of Vertical Exhaust Duct (VED) or Chimney Containment Systems

As data centers grow in density and complexity, efficient heat management becomes essential. Chimney Containment Systems, also known as Vertical Exhaust Ducts (VEDs), are gaining popularity for their ability to efficiently isolate and expel hot air directly to the return air plenum—enhancing airflow dynamics and reducing cooling costs.

Why Chimney Containment Works

  • Complete Hot Air Elimination
    Unlike traditional hot aisle containment, chimney systems remove 100% of hot exhaust air from the room, ensuring cooler ambient temperatures throughout the data center.
  • Modular & Scalable Design
    Chimney systems can be installed on individual cabinets or configured across multiple enclosures. Their modular architecture allows for easy reconfiguration and optional fan integration as cooling demand increases.
  • Easy Integration with Cabinet Purchase
    Chimney containment can be pre-configured during cabinet procurement, streamlining deployment and eliminating the need for a full hot-aisle containment buildout.

Key Considerations for Deployment

  • Airflow & Pressure Management
    Chimney designs with narrow cross-sections may cause air pressure buildup. It’s essential to select properly sized ducts and evaluate airflow requirements during planning.
  • Variation Across Manufacturers
    Differences in gasketing quality, leakage control, and airflow efficiency between vendors can impact performance. Opt for systems that meet your specific cooling and sealing requirements.

    Mechanical, Electrical, and Plumbing (MEP) engineers must coordinate chimney placement, airflow modeling, and fire suppression design to ensure compliance, reliability, and accessibility.

    Vertical Exhaust Ducts are a smart and flexible cooling strategy for modern high-density data centers. By capturing hot exhaust air at the cabinet level and directing it out of the room, VEDs provide a cleaner, more efficient thermal environment—enhancing overall system performance and sustainability.

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