Cargo Heat-Up - Time from Boiler
Time to warm a heated cargo from current temperature to discharge-pumpable temperature given boiler steam output and cargo mass - used in HFO and asphalt loading plans.
Total heat required
1,537,500MJ
Net heat-transfer rate
3,266.7kW
Heat-up time
470.7h
Formula, assumptions, and limits
Does not include hull-loss to ambient (add as loss term per voy-cargo-heating-cost). Typical hull η 60–75 % due to coil fouling and heat leakage down pumpwell.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Cargo mass | t | ullage × density | |
| Specific heat | kJ/kg·K | cargo data sheet | |
| Temperature rise | K | operations plan | |
| Steam mass flow | kg/h | boiler meter | |
| Steam latent heat | kJ/kg | IAPWS tables |