Two extensions of the compressibility factor Z correlation (sub-critical pressure region)
![](https://mychemengmusings.files.wordpress.com/2013/06/compressibility-factor-z-for-n-butane.jpg)
nbsp; Post up dated 8 May 2019 . The new Zv correlation for the direct, explicit calculation of the compressibility factor 'Z', described in the previous post, is based on Lydersen's Chart titled: "Generalized Compressibility Factor Chart ; for Zcrit is 0.27 " is intended for use with hydrocarbon compounds, whose critical compressibility factor 'Zcrit'…
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![](https://mychemengmusings.files.wordpress.com/2013/06/verylow-presure-z-factor-zc-0-31.jpg)
Two extensions of the compressibility factor Z correlation (sub-critical pressure region)
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![](https://mychemengmusings.files.wordpress.com/2013/06/saturated-steam-z-values-compared-2.jpg?w=640)
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