Land, Permitting, and Environmental
Floodplain is land subject to flooding under defined frequency or mapped hazard assumptions. For data centers, floodplain exposure affects developable area, finished-floor elevation, equipment placement, insurance, resilience, and permitting.
Wet-bulb temperature reflects air temperature and humidity together and is a key input for evaporative cooling performance. It can be more important than dry-bulb temperature when evaluating cooling tower and economizer potential.
Read definition →Valve-regulated lead-acid battery is a sealed lead-acid battery type historically common in UPS systems. It is familiar and relatively low cost, but it has space, weight, replacement, temperature, and maintenance tradeoffs versus lithium-ion systems.
Read definition →Ring bus is a substation bus arrangement where breakers and circuits form a loop. It can improve reliability versus simple radial arrangements because one breaker or circuit can often be isolated while other paths remain energized.
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