SOURCE-ALIGNED CALCULATION WORKSPACE
Liquid Ring Vacuum Pump Sizing Calculator
Estimate the vacuum capacity required for supported continuous gas-load and pump-down duty inputs before final manufacturer selection.
C8 · VALIDATED
01Leakage & gas load
02Pressure correction
03Intermittent duty
ENGINEERING REFERENCE
Liquid ring vacuum pump sizing calculator
Estimate leakage, continuous gas load and corrected or intermittent exhaust capacity from the operating pressure, temperature, system volume and seal conditions. The separate output terms help identify which assumption drives the vacuum duty.
Use the result as a preliminary sizing package and confirm gas composition, liquid ring temperature, absolute pressure basis and manufacturer capacity data before final selection.
What This Vacuum Sizing Calculator Calculates
The current calculator collects system volume, working pressure, initial and final pressure, evacuation time, continuous gas load, leakage-related inputs, gas molecular weight and vapor-pressure inputs. It reports continuous, corrected and intermittent exhaust-capacity terms.
Continuous Duty vs Pump-Down Duty
Continuous duty is driven by the gas or vapor load handled during operation. Pump-down duty is driven by how quickly a defined system volume must be evacuated through a pressure range. A real application may require review of both conditions.
What Requires Manufacturer Selection Data
Final selection requires actual capacity curves across suction pressure, seal-liquid conditions, gas composition, power, materials, discharge conditions and project requirements.
Frequently Asked Questions
What is the difference between continuous load and pump-down duty?
Continuous load is the gas or vapor rate during operation; pump-down duty evacuates a defined volume through a pressure range in a target time.
Can this calculator select the final vacuum-pump model?
No. It establishes a preliminary duty requirement to check against manufacturer performance data.
Does gas composition matter?
Yes. Gas composition, molecular weight, vapor content and process conditions can affect sizing and final selection.