🔄

Compressor Flow Conversion Calculator

GPSA / API 617

Flow Conversion Calculator
Convert between compressor flow units: ACFM, SCFM, ICFM, MMSCFD, and mass flow. Accounts for Z-factor and operating conditions for accurate conversions per GPSA methods.

Input Flow Type

Flow Input

ACFM

Operating Conditions

psia
°F
-

Standard Conditions

psia
°F

Gas Properties

lb/lbmol
air = 1.0

Flow Units Explained

  • ACFM: Actual ft³/min at operating conditions
  • SCFM: Standard ft³/min at 14.696 psia, 60°F
  • ICFM: Inlet ft³/min (suction conditions)
  • MMSCFD: Million standard ft³/day

Standards & References

  • GPSA
    Section 13: Compressors
  • API 617
    Centrifugal Compressor Flow Units

Frequently Asked Questions

What flow units can this calculator convert between?

It converts between ACFM, SCFM, ICFM, MMSCFD, and mass flow using Z-factor and operating conditions.

Why is Z-factor important in compressor flow conversions?

The compressibility Z-factor corrects for non-ideal gas behavior, which is essential for accurate flow conversions between actual and standard conditions.

What is the difference between ACFM and SCFM?

ACFM is actual cubic feet per minute at operating conditions, while SCFM is corrected to standard temperature and pressure conditions.