How Does A Fandoor Improve Airflow In Server Racks?

Fandoors improve server rack airflow by creating directional pressure gradients, channeling cool air through equipment while expelling heat. They achieve this via perforated panels (40-60% open area) and built-in fans operating at 0.5-1.2 inH₂O static pressure. This reduces hot spots by 8-12°C versus open racks, with 15-30% lower fan energy compared to traditional CRAC systems.

What airflow velocity do fandoors maintain?

Fandoors sustain 2-3 m/s front-to-back airflow through multi-zone dampers. This velocity balances cooling efficiency with acoustic limits (55dB max).

Technically, fandoors use ECM motors modulating between 800-2200 RPM. Pro tip: For racks over 15kW, pair with blanking panels to prevent air shortcuts. Like highway carpool lanes, fandoors dedicate pathways for cold air – mixing traffic causes 40% cooling loss. But does higher RPM always mean better cooling? Not if bypass airflow occurs. A Google data center study showed 1.8 m/s optimized PUE at 1.15.

How do fandoors reduce bypass airflow?

Their gasket-sealed edges and adjustable louvers cut bypass by 70% versus open frames. This forces 95%+ air through equipment instead of gaps.

Fandoors achieve 0.75 air changes per minute through precise CFM calibration matching rack heat output. Pro tip: Use infrared thermography quarterly to detect new leakage paths. Imagine a water pipe with holes – fandoors act like valve regulators, patching leaks systemically. Why do legacy racks waste 40% cooling? Unmanaged air takes the path of least resistance.

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