Capacity Calculation Xls | Vacuum Pump

A pure ( \ln(P_i/P_f) ) calculation is a starting point, but real systems add complexity. Your XLS calculator must account for:

Given chosen pump speed S_pump and S_eff:
[ t_actual = \fracVS_eff \times \ln\left(\fracP_start - Q_total/S_effP_target - Q_total/S_eff\right) ] vacuum pump capacity calculation xls

| Chosen S_pump | S_eff | t_actual (seconds) | t_actual (minutes) | |---------------|-------|--------------------|--------------------| | 12 L/s | 10.71 | =500/10.71*LN((1013-0.075/10.71)/(0.01-0.075/10.71)) → ~530 s | ~8.8 min | A pure ( \ln(P_i/P_f) ) calculation is a

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Cell B10 formula: = (B2 * LN(B3/B4)) / B5 → This gives average speed in m³/s. Convert to m³/h: multiply by 3600. Cell B10 formula: = (B2 * LN(B3/B4)) /