Scaling CDU Systems from 300kW to 20MW+
Architecture and supply considerations when designing across two orders of magnitude of cooling capacity.
Scaling a CDU platform across two orders of magnitude of cooling capacity is not a linear exercise. Components, controls, and redundancy strategies all shift as capacity grows.
At sub-megawatt scale, single-pump skids with N+1 redundancy are common. Above 1MW, parallel pump configurations and N+2 redundancy become the norm to protect uptime under maintenance.
Heat exchangers, pump motors, and VFDs are the pacing items in supply. Lead-time exposure compounds as capacity grows because larger units have longer queues and fewer alternate suppliers.
KEY TAKEAWAYS
- →Component selection scales non-linearly with capacity
- →Redundancy strategy shifts from N+1 to N+2 above 1MW
- →Lead-time risk concentrates in pumps and heat exchangers
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