Compressibility Factor

Compressibility factor, abbreviated as z, a dimensionless number, also called compression factor or gas deviation factor, corrects for deviation from the ideal gas law to account for the real gases behavior.

 

compressibility factor formula
\(\large{ Z = \frac{p \; V}{n \; R \; T}  }\)
Symbol	English	Metric
\(\large{ Z }\) = compressibility factor	\(\large{ dimensionless }\)
\(\large{ n }\) = number of moles	\(\large{ dimensionless }\)
\(\large{ p }\) = pressure	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ R }\) = specific gas constant	\(\large{\frac{lbf-ft}{lbm-R}}\)	\(\large{\frac{J}{kg-K}}\)
\(\large{ T }\) = temperature	\(\large{F}\)	\(\large{K}\)
\(\large{ V }\) = volume	\(\large{ft^3}\)	\(\large{m^3}\)