Compressibility Factors: z_factor
Generalized compressibility factor Z = Z0 + omega*Z1 (Lee-Kesler correlation) as a function of reduced temperature (Tr) and reduced pressure (Pr), plus critical properties (Tc, Pc, acentric factor omega) for ~41 common engineering gases and fluids
| record type | sort key | Pr (dimensionless) | Tr (dimensionless) | Z0 (dimensionless) | Z1 (dimensionless) | notes |
|---|---|---|---|---|---|---|
| z_factor | Tr1.00_Pr0.010 | 0.01 | 1 | 0.2901 | 0 | Near critical — below boiling curve for most fluids. Z0 from Lee-Kesler simple fluid BWR-type EOS (Zc=0.2901). Pr→0 limit = Zc (liquid-like root). |
| z_factor | Tr1.00_Pr0.050 | 0.05 | 1 | 0.2911 | 0.0002 | Near critical |
| z_factor | Tr1.00_Pr0.100 | 0.1 | 1 | 0.2943 | 0.0008 | Near critical |
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