HVAC - Air Change Rate
Air-change rate (ACH) required for various marine spaces - engine room, accommodation, galley, battery room.
Required ACH
61/h
Design flow
720m³/h
Formula, assumptions, and limits
ILO MLC 2006 requires accommodation ACH ≥ 6. Battery rooms ≥ 50 to vent H₂/explosive gas. Class rules (DNV, ABS) add stricter rules for specific spaces.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Air changes per hour | 1/h | ASHRAE / MLC 2006 |