: Available on ResearchGate , this paper explores numerical methods for iterative calculations in complex systems. ⚙️ Key Variables to Consider
(leaks + outgassing)
:
Real vacuum pumps have . A rotary vane pump might have constant speed from atmosphere down to 1 Torr, but a Roots blower (mechanical booster) only works efficiently below 10 Torr. A good vacuum pump capacity calculation XLS will incorporate segmented pumping speeds using a lookup table. vacuum pump capacity calculation xls
Lucas reopened the spreadsheet. He deleted the steady-state assumption and replaced it with the pump-down formula for a rough vacuum: $$t = \fracVS \times \ln\left(\fracP_1P_2\right)$$ Where: : Available on ResearchGate , this paper explores
Cell formula: = (B2 * LN(B3/B4)) / B5 → This gives average speed in m³/s. Convert to m³/h: multiply by 3600. : Available on ResearchGate