Compressibility factor Z for sub-critical pressures in a 'one-cell

(updated 2 May 2019) For many scouting and feasibility studies for a chem-eng design I found many a time the need to calculate gas and vapor densities for preliminary equipment sizing , pressure drop calculations and so on. Calculation of the density of a real gas invariably requires the compressibility factor 'Z' to be available. This…

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The value of compressibility factor at the critical state the gas matches with the `Z_(c )` is

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Compressibility Factor Z

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Under critical conditions, the compressibility factor foa a gas is .