Cooling a Songpa Basement Row Without Duct Rework
Shelf spacing and intake baffles that reduced upper-unit throttling in a 16-miner basement room without structural duct changes.
Basement equipment rooms in Songpa-gu share a common constraint: exhaust paths often terminate in shared ceiling voids that were never designed for sustained heat loads.
The Problem Pattern
Upper-shelf miners draw intake air warmed by lower units. After four to six hours of operation, junction temperatures on shelves 5 and 6 climb above manufacturer thresholds even when ambient room temperature looks acceptable.
Low-Cost Corrections
Vertical spacing: Adding 2U between heat-heavy shelves breaks the direct intake path. We lost four mounting positions in a 24U cabinet but gained stable operation.
Intake baffles: Cardboard prototypes confirmed airflow direction before the operator installed metal baffles. Cost under ₩80,000 in materials.
Exhaust isolation: Separating hot exhaust from cold intake at the cabinet rear panel reduced recirculation by 4°C at the upper intake sensor.
When Duct Rework Is Unavoidable
If ceiling voids connect multiple tenants’ exhaust paths, baffles alone may not suffice. We flag shared-void buildings during intake calls and recommend thermal audits before hardware orders.
Monitoring Without Fancy Tools
A ₩25,000 USB temperature logger at each shelf intake, read weekly, catches drift before fan failures. Operators in our client stories use this between formal audit visits.