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Airport Cooled Aisle Dimensions

Airport Cooled Aisle Dimensions

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Cooled aisles in airport IT or data center environments typically require a minimum width of 1.2 meters, with lengths up to 16 meters for continuous rows, and can be custom-configured for optimal airflow and equipment access.

Standard Width and Length

For effective cold aisle design, the minimum aisle width is generally 1.2 meters (approximately 4 feet), which allows for two full floor tiles between equipment racks and ensures proper airflow and personnel access . The maximum aisle length for continuous rows is recommended at 16 meters, while aisles with restricted exits should be limited to 6 meters to maintain safe access and evacuation . These dimensions help maintain thermal performance and allow technicians to service equipment safely.

Containment Systems

Cold aisle containment (CAC) systems are often used to enclose the cold supply air, preventing it from mixing with hot exhaust air. This ensures that servers and IT equipment receive a consistent supply of cooled air, improving efficiency and reliability . CAC systems can be custom-engineered to fit the specific layout of the airport data hall, including adjustable length, width, and height, as well as options for sliding or hinged doors and roof panels . Raised floor systems are commonly paired with CAC to deliver conditioned air directly into the aisle from the underfloor plenum.

Design Considerations

  • Airflow efficiency: Proper aisle width and containment prevent hot and cold air mixing, optimizing cooling performance.
  • Accessibility: Aisles must allow personnel to access equipment safely and quickly for maintenance or emergency response.
  • Custom configuration: Each airport facility may have unique constraints, so aisle dimensions and containment features should be tailored to the site layout .
  • Ceiling height: For ceilings above 3.7 meters, additional aisle width may be required to accommodate lifts or overhead systems . By adhering to these guidelines, airport IT facilities can maintain consistent cooling, operational safety, and energy efficiency while ensuring that critical systems remain accessible and protected.
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