Compressibility · Natural Gas

How much does your gas deviate?

The Z-factor, how far real gas strays from ideal, sets density, metering, line pack, and compression. This computes it from gas gravity or composition, the Standing-Katz way, sweet or sour.

Gas

Define the gas by

Specific gravity (air = 1)

Pseudo-critical correlation

Conditions

Units

Temperature (°C)

Pressure (bar)

Compressibility

Z-factor

–

real / ideal volume

Gas density

–

at T & P

Molar mass

–

SG (air=1)

Pseudo-crit T_pc–

Pseudo-crit P_pc–

Reduced T_pr–

Reduced P_pr–

Molar volume–

Ideal-gas error–

Built by Empira

This free tool comes from our operator training simulators. Each is a working model of your own unit that operators run, break and recover.

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How much does your gas deviate?

Gas

Conditions

CompressibilityDownload ↓

Compressibility