cnga - United States Natural Gas Association of California (CNGA) formula

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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 $Z$ .

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