In ESS and prefab cabins, battery clusters, PCS and AC are packed together. Bad ducting creates local hot spots; cell temperature spread accelerates ageing and risks thermal runaway. Airflow design decides success.
1. Supply / return layout
- Top supply / bottom return (or reverse): use buoyancy, avoid mixing;
- Aim supply at high-heat zones (battery, PCS); keep return away from heat sources;
- Duct cold air to every cabinet, not just the nearest.
2. Avoid short-circuit airflow
If supply and return are too close, cold air is sucked back before reaching equipment. Fix: increase spacing, add baffles, duct air to the far end.
3. Duct resistance & flow
| Param | Meaning | Tip |
|---|---|---|
| Airflow m³/h | Exchange rate | From heat & rise |
| Dynamic loss | Bends/restriction | Fewer bends, rounded |
| Outlet velocity | End speed | Even, no single-point blast |
4. Placement
- Place AC near high-heat gear, shorten path;
- Even spacing, zone delivery if needed;
- RS485 monitors each point, closed-loop flow control.
See prefab cabin solution or contact Haocheng for airflow simulation.