Compressed Air Demand and Leakage — online
How much of your compressed air is leaking, what does it cost, and what would a lower pressure or a bigger receiver be worth?
Yellow cells are inputs; orange cells are choices; blue cells choose the unit. Select or hover over an input to see its help in the box below the toolbar. The sheet is the same as the Excel tool (USD 39) — the Guide, method and references are in the Excel file.
What this compressed air demand and leakage calculator does
Leak flow from a load/unload test or hole sizes, annual energy and cost of leaks, artificial demand from excess pressure, pressure-reduction saving, receiver sizing and a pipe pressure drop check.
- Free air delivery. Referred to stated reference conditions and corrected for site altitude, ambient and intake temperature.
- Leak flow. From a load/unload timing test or an orifice estimate for up to three hole-size classes, against average demand.
- Energy and cost of leaks. Power, energy and cost per year at your specific power, and the cost per 1000 m³ or 1000 ft³ of compressed air.
- Artificial demand. The extra air drawn because discharge pressure is higher than the end use needs, and the saving from lowering it.
- Receiver sizing. Volume for a demand event, and the pressure drop with your existing receiver.
- Pipe pressure drop. Isothermal compressible flow with Swamee-Jain friction factor, fittings allowance and velocities.
How it was checked
242 recalculated runs against an independent Python model: all method selector combinations, random and hand-picked inputs, US, British and industry units, 104 invalid and 15 limit cases; largest deviation 9e-14.
Related
- Compressed Air Demand and Leakage Excel tool — USD 39, keep the workbook, its Guide and the report sheet.
- All online tools
Questions
Is the compressed air demand and leakage calculator free?
You can enter and check all your data free. The full results, findings and printable sheet are unlocked with a 3-run pack (USD 9), a monthly subscription to all online tools (USD 15) or a yearly one (USD 99).
Are the results the same as the Excel tool?
Yes. The online tool runs the formulas of the Compressed Air Demand and Leakage Excel workbook and was checked cell by cell against the Excel file.