Vacuum Pump Capacity Calculation Xls [2021] -

t=VS×ln(P1P2)t equals the fraction with numerator cap V and denominator cap S end-fraction cross l n open paren the fraction with numerator cap P sub 1 and denominator cap P sub 2 end-fraction close paren : Pump-down time (seconds) : Total system volume (Liters or : Pumping speed (L/s or P1cap P sub 1 : Initial pressure (usually 1013 mbar/atmospheric) P2cap P sub 2 : Desired final pressure

Below is a complete, copy-ready CSV table you can paste into Excel (or save as .csv) to create a sheet that calculates vacuum pump capacity (flow rate required) for common vacuum applications. The sheet includes inputs, intermediate calculations, units, and sample example rows. After pasting, import into Excel and adjust formatting, formulas, or units as needed. vacuum pump capacity calculation xls

| Parameter | Unit | Value | | --- | --- | --- | | System Volume (V) | L | 100 | | Gas Load (Q) | L/s | 10 | | Desired Vacuum Level (P) | mbar | 10 | | Pumping Time (t) | seconds | 600 | | Required Pump Capacity (S) | L/s | =(100*(10/600))+10 = 11.67 | t=VS×ln(P1P2)t equals the fraction with numerator cap V

A two-stage rotary vane pump (30 m³/h ≈ 8.3 L/s for roughing) plus a Roots blower (300 m³/h ≈ 83 L/s) to handle the outgassing load at low pressure. | Parameter | Unit | Value | |

: A paper on Academia.edu that evaluates pump-down time through graphical analysis and pressure-time curves.