Time for a self-priming centrifugal pump to evacuate the suction line to a specified vacuum.
Formula
$$ t = \frac{V_\text{line}}{\dot V_\text{air}} \cdot (1 + \text{margin}) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $V_\text{line}$ | Volume to evacuate | L | pipe geometry |
| $\dot V_\text{air}$ | Pump air-handling capacity | L/min | pump data sheet |
Sources
- SOLAS II-2 FSS Ch.12.