A reduced vapour pressure equation for use at low reduced temperatures
1986; Elsevier BV; Volume: 27; Linguagem: Inglês
10.1016/0378-3812(86)87056-x
ISSN1879-0224
Autores Tópico(s)Adsorption, diffusion, and thermodynamic properties of materials
ResumoBased on thermal and vapour pressure data for alkanes ranging from methane to n-hexadecane, a generalised vapour pressure correlation has been developed for reduced temperatures (Tr) in the range 0.7 > Tr > 0.4. The equation has the form: 1np0r = Ar1nTr + BrTr − (Dr/Tr) + Er where the coefficients Ar, Br, Dr and Er are functions of acentric factor only. The accuracy of correlation achieved is better than given by the familiar Lee-Kesler correlation applied to alkanes in this range. Application to non-alkanes is discussed.
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