What Is Air Cooling for Data Centers?
Air cooling is a key thermal management approach in data centers, especially for facility-level heat rejection. Air coolers (dry coolers) transfer heat from the chilled-water or glycol loop to ambient air, enabling reliable, low-energy cooling and supporting free cooling operation in suitable climates.
Air cooling plays a critical role in both:
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Traditional HVAC-based data centers
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Modern liquid-cooled facilities (as the ultimate heat rejection source)
This makes air coolers essential infrastructure in today’s high-density computing environments.