CRAH
Computer Room Air Handler moves air across chilled-water coils to cool data center spaces. CRAH systems depend on chilled-water infrastructure and are common in larger facilities where centralized cooling plants are used.
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Cooling and Water
Air-side economizer
Air-side economization uses outside air directly or indirectly to cool the data center when conditions allow. It can reduce energy use but may introduce filtration, humidity, and contaminant-control issues.
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Zoning
Zoning is the local land-use classification and rule set that determines permitted uses, dimensional standards, procedures, and conditions. Data centers may require industrial zoning, special approval, or text amendments depending on the locality.
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Battery Energy Storage System stores energy for later discharge. In data centers, BESS can support UPS functions, peak management, backup, demand response, renewable integration, or grid services depending on design and interconnection.
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