Collection: Airflow

Heat Rises. Efficiency Doesn't Have To Fall.

The physics of data center cooling are straightforward: servers pull cool air in from the front, heat it with their components, and exhaust hot air out the back. The challenge is ensuring that the hot air exhausted from one server doesn't get recirculated back to the intake of another — a phenomenon called hot air recirculation that is the single most common cause of thermal problems in AI rack environments.

At the power densities of modern GPU infrastructure — 20kW, 30kW, even 50kW per rack — hot air recirculation isn't just an efficiency problem. It's a reliability problem. Server inlet temperatures above 27°C cause thermal throttling. Temperatures above 35°C trigger emergency shutdowns. And the hardware damage from sustained thermal stress accumulates invisibly until it manifests as premature failures that are expensive to diagnose and replace.

Airflow management is the discipline of preventing this. It's not glamorous infrastructure — blanking panels and containment curtains don't generate the excitement of a new GPU server — but the ROI is real and measurable. Properly managed airflow can reduce cooling energy consumption by 30–50% and eliminate thermal throttling entirely in environments where it was previously a chronic problem. DVUN's Airflow collection gives you the hardware to achieve this.

Airflow Management Products

• Blanking Panels: The highest-ROI airflow improvement available. 1U and 2U toolless blanking panels seal unused rack units and prevent hot exhaust air from recirculating to server intakes. Every empty rack unit without a blanking panel is a thermal leak.
• Hot-Aisle Containment Systems: Overhead containment panels, end-of-row doors, and aisle containment curtains that physically separate hot exhaust air from cold supply air. Reduces cooling energy consumption by 30–50% in properly implemented deployments.
• Cold-Aisle Containment: Alternative containment approach that encloses the cold aisle and pressurizes it with supply air, preventing hot air infiltration from the room environment.
• Precision Cooling Units (PCUs): In-row and overhead precision cooling units for environments where room-level cooling is insufficient for high-density AI rack deployments.
• Rack Fans & Fan Trays: Supplemental fan units for racks with insufficient server fan pressure to overcome high-resistance cable environments or long airflow paths.
• Airflow Baffles & Guides: Internal rack baffles that direct airflow through specific paths, preventing bypass airflow that reduces cooling effectiveness.

Implementing Hot-Aisle Containment: What to Expect

A properly implemented hot-aisle containment system in a 10-rack AI cluster typically reduces cooling energy consumption by 35–45% and eliminates server inlet temperature variability across the row. The implementation requires overhead containment panels between rack tops and the ceiling (or a suspended containment structure), end-of-row doors that seal the hot aisle from the room environment, and blanking panels in all unused rack units. DVUN's containment systems are designed for modular installation that can be implemented in phases as your cluster grows. Pair with our Racks & Enclosures for compatible rack enclosures and our Liquid Cooling for ultra-high-density deployments where air cooling reaches its limits.

Specifications

• Blanking panels: 1U, 2U, toolless snap-in, steel and ABS plastic options
• Containment panels: modular 600mm and 800mm width sections, adjustable height
• End-of-row doors: hinged and sliding configurations, 600mm to 1200mm widths
• In-row cooling units: 10kW to 60kW cooling capacity
• Supplemental rack fans: 1U fan trays, 500 to 2000 CFM airflow
• Operating temperature range: designed for 18–27°C cold aisle supply air

Control the Air. Control the Temperature. Control the Outcome.

Airflow management is the infrastructure investment that protects every other infrastructure investment you've made. DVUN's Airflow collection gives you the hardware to build a thermally stable AI environment — one where your hardware runs at rated performance, your cooling systems run efficiently, and thermal surprises don't interrupt your operations. Request a quote for complete airflow management designs for your specific rack layout.