Refrigeration Pull-Down Time
Estimated pull-down time of a refrigerated hold given initial/target temperatures, cargo mass and cooling capacity.
Net cooling
260kW
Sensible heat to remove
183,750MJ
Pull-down time
0.2h
Formula, assumptions, and limits
Sensible portion only - add latent heat for products freezing (≈ 333 kJ/kg for water content). Respiration heat 0.03–0.2 W/kg for fresh fruits.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Cargo mass | t | stowage plan | |
| Effective specific heat | kJ/kg·K | ASHRAE Refrigeration | |
| Net cooling rate | kW | plant − heat loss |