Pipeline Toolbox
Function Reference Manual
Early Public Release DD-00011-000

3.4.6 cnga - United States Natural Gas Association of California (CNGA) formula
z = cnga(p,t,g=1)

Computes the compressebility factor Z using the United States Natural Gas Association of California (CNGA) formula.

Arguments

p

Average pressure Pavg (Pa ).

t

Average temperature Tavg (K).

g

Gas gravity (gair= 1).

Returns Compressebility factor Z.