Ventilation Mistakes in Basement Rack Rows
Three recurring airflow errors we document during site visits—and how they inflate joules per terahash without touching firmware.
Basement farms in Seoul often have cool intake air at floor level and hot stale layers at chest height. Miners mounted in the wrong zone pay the efficiency penalty.
Recirculation Loops
Exhaust directed into the same bay’s intake creates a closed loop. Temperature rise shows up within minutes on thermography. Fix paths before ordering more units.
Dormant HVAC Returns
Summer activation of building returns can dump conditioned air across your hot exhaust. We map ceiling diffusers during visits because blueprints rarely show seasonal HVAC schedules.
Overstacking in Narrow Bays
Double-stacking in a 60 cm bay blocks side intake on lower units. Stagger clocks or reduce row count. Clients often find six properly spaced units outperform eight cramped ones on the same breaker.
Site visits produce a photo punch list prioritized by hash lost per day if left unfixed.