Plant engineering calculator · Updated 17 September 2026
Compressed Air Demand Profile Calculator — Weighted CFM, Peak & Load Factor
Combine four demand periods into time-weighted average flow, peak flow, daily air volume and load factor for compressor planning.
Inputs
Live results
- Weighted average flow 333.33333 m³/h
- Peak flow 600 m³/h
- Cycle air volume 8,000 m³
- Load factor 55.555556%
- Profile hours 24 h
Formula and method
Qavg=Σ(Qi×hi)/Σhi; load factor=Qavg/Qpeak.
Worked example
Four operating periods reveal why average demand can be far below peak nameplate demand.
Engineering assumptions and limits
- Entered periods should represent a complete operating cycle.
- Use logged flow/pressure data for investment-grade sequencing decisions.
Frequently asked questions
What does this Compressed Air Demand Profile Calculator calculate?
Combine four demand periods into time-weighted average flow, peak flow, daily air volume and load factor for compressor planning.
Can I use this for final equipment selection?
Use it for transparent engineering screening. Final selection must be checked against vendor curves, operating envelopes, applicable standards and site measurements.
Why are intermediate results shown?
They expose unit conversions and governing loads so unrealistic assumptions are easier to catch.