Vapor Return - Rate vs Load Rate
Vapor-return gas volume during loading - matches the liquid load rate corrected for tank ullage temperature, used to size VECS manifold.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Cargo loading rate | m³/h | |
| Tank vapor temperature | K | |
| Terminal reference T | K |
Source: MARPOL Annex VI Reg. 15
In short
Vapor-return gas volume during loading - matches the liquid load rate corrected for tank ullage temperature, used to size VECS manifold.