Compressor Tank Recovery Time Calculator
Estimate how long a receiver may take to recover through a stated gauge-pressure increase. The tool shows the method and key assumptions so you can inspect how the input values lead to the estimate.
How to use this calculator
- Enter receiver tank volume (litres) using the unit and definition shown beside the input.
- Enter pressure increase (bar) using the unit and definition shown beside the input.
- Enter compressor free-air delivery (l/min) using the unit and definition shown beside the input.
- Check that all values refer to the same time period and scenario.
- Review the outputs alongside the assumptions before using them in a decision.
Formula and assumptions
Idealized free-air volume required≈tank litres×pressure rise in bar; time=required free-air litres/free-air delivery L/min.
- Assumes stated FAD applies at the operating conditions. Real recovery is affected by compressor output at pressure, temperature, leaks, tank conditions and draw during recovery.
- The estimate is calculated from values you enter. It does not connect to external accounts, obtain live prices, or validate local regulations or engineering specifications.
Worked examples
Worked example
A 150 L tank raised by 6 bar needs approximately 900 free-air litres; at 230 L/min the ideal estimate is 3.91 minutes.
Enter tank capacity, pressure increase and rated/measured free-air delivery.
Check the compressor performance curve and pressure-vessel specifications.
Understanding the result
Assumes stated FAD applies at the operating conditions. Real recovery is affected by compressor output at pressure, temperature, leaks, tank conditions and draw during recovery.
Change one input at a time to see how sensitive the output is to that assumption.
Important notes
Assumes stated FAD applies at the operating conditions. Real recovery is affected by compressor output at pressure, temperature, leaks, tank conditions and draw during recovery.
Frequently asked questions
What formula does the Compressor Tank Recovery Time Calculator use?
Idealized free-air volume required≈tank litres×pressure rise in bar; time=required free-air litres/free-air delivery L/min.
What should I verify before relying on the result?
Assumes stated FAD applies at the operating conditions. Real recovery is affected by compressor output at pressure, temperature, leaks, tank conditions and draw during recovery.
Can I compare different scenarios?
Yes. Change one assumption at a time, keep units and definitions consistent, and save the inputs used for each comparison.
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Related explanations
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.